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The Following brands are available based on your search.

  • ACDelco
    ACDelco
  • Airtex
    Airtex
  • Beck Arnley
    Beck Arnley
  • Cardone
    Cardone
  • GMB
    GMB
  • Gates
    Gates
  • Metrix
    Metrix

Best Selling Genuine Hummer Water Pumps

  • We Stock the following top leading brands, including Gates, ACDelco, GMB, Cardone, Beck Arnley, Metrix, Airtex
  • Constantly Updated Inventory of Hummer Replacement Water Pump Parts

We stock Water Pump parts for most Hummer models, including H1, H2, H3, H3T.

Gates
2006 Hummer H3 Engine Water Pump Gates

P311-575894E    W0133-1910199  New

Qty:
$112.42
Gates Engine Water Pump
  • Standard
  • Includes Gasket
  • with Gasket
Brand: Gates
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle
2006 - Hummer H3
ACDelco
2006 Hummer H3 Engine Water Pump ACDelco

P311-2AC8AEC    W0133-1910199  New

Qty:
$247.47
ACDelco Engine Water Pump
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • GM Original Equipment
Brand: ACDelco
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle
2006 - Hummer H3
ACDelco
2006 Hummer H3 Engine Water Pump ACDelco

P311-2AC8AEC    W0133-1910199  New

Qty:
$91.05
ACDelco Engine Water Pump
  • Professional
Brand: ACDelco
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle
2006 - Hummer H3
GMB
2005 Hummer H2 Engine Water Pump - N/A 8 Cyl 6.0L GMB

P311-0338375    130-7340  New

Qty:
$74.39
GMB Engine Water Pump  N/A
  • New Water Pump
  • May Require New Thermostat 2.05" Diameter Thermostat Opening
  • Product Attributes:
    • : New
    • Housing Material: Aluminum
    • Hub Height: 6.57
    • Impeller Material: Metal
    • Impeller Rotation: Reverse
    • Pulley Included: Yes
    • Water Pump Drive Type: Serpentine Belt
Brand: GMB
Position: N/A
Additional Fitment Information:
Vehicle Block CC CID Position
2005 - Hummer H2 V 5967 364 N/A
GMB
2010 Hummer H3 Engine Water Pump - N/A 5 Cyl 3.7L GMB

P311-2AB12CE    130-7700  New

Qty:
$39.93
GMB Engine Water Pump  N/A
  • New Water Pump
  • Product Attributes:
    • : New
    • Housing Material: Aluminum
    • Hub Height: 2.15
    • Impeller Material: Metal
    • Impeller Rotation: Reverse
Brand: GMB
Position: N/A
Additional Fitment Information:
Vehicle Block CC CID Position
2010 - Hummer H3 L 3654 223 N/A
GMB
2008 Hummer H2 Engine Water Pump - N/A 8 Cyl 6.2L GMB

P311-4272981    130-9670  New

Qty:
$104.85
GMB Engine Water Pump  N/A
  • New Water Pump
Brand: GMB
Position: N/A
Additional Fitment Information:
Vehicle Block CC CID Position
2008 - Hummer H2 V 6199 378 N/A
GMB
2002 Hummer H1 Engine Water Pump - N/A 8 Cyl 6.5L GMB

P311-2902AF5    130-7250  New

Qty:
$63.93
GMB Engine Water Pump  N/A
  • New Water Pump
Brand: GMB
Position: N/A
Additional Fitment Information:
Vehicle Block CC CID Position
2002 - Hummer H1 V - 395 N/A
Cardone
2006 Hummer H2 Engine Water Pump Cardone

P311-59618FD    58-562  Remanufactured

Qty:
$7.20 $54.71
Cardone Engine Water Pump
  • Remanufactured Water Pump
  • w/2.05" Diameter Thermostat Outlet
  • Reman. A-1 CARDONE Water Pump
  • Product Attributes:
    • Casting Number: 12562459
    • Duty Rating: Standard
    • E-Waste: No
    • FAQs:
      • After Mounting The Pump On The Vehicle And Running The Engine, The Shaft Broke. The Shaft Was Blue. Does This Mean The Pump Burned Up?
      • Do I Need Identification Off Of The Original Pump To Get The Correct Replacement?
      • For Most Modern Vehicles, Knowing The Engine Size Is Sufficient To Locate The Correct Replacement Water Pump. However, With Some Older Passenger Vehicles And Medium Duty Applications, You May Need An Identification Number That Is Either Stamped On The Ori
      • I Just Replaced The Water Pump And My Engine Is Overheating. Is The Pump Defective?
      • The Engine Overheating Could Be Due To Components Other Than The Water Pump. The Following Steps Should Be Taken Before Checking The Pump. Flush The System. Check Hoses, Clamps And Seals. Check Radiator Cap And Thermostat. Check For Proper And Sufficient
      • The Impeller On My Original Pump Looks Pitted. Is This Caused By Cavitation?
      • The Pump Did Not Burn Up, However The Shaft Broke Due To A Stress Fracture Caused By: Excessively High Temperatures, Improperly Torqued Mounting Bolts, Bent Or Distorted Pulley(s), Cracked Fan Bent, Not Mounted Squarely, Defective Fan Clutch, Improperly T
      • Yes, The Mostly Likely Cause Is Cavitation. When Inlet Pressures Of A Water Pump Fall Below The Design Specifications Due To A Leak Or Inadequate Coolant Levels, Tiny Vapor Bubbles Can Form In The Coolant At The Center Of The Impeller. When Coolant Conta
    • Features and Benefits:
      • 100% Leak Testing And Hub-pull Testing Ensures Reliable Performance.
      • O.e.-supplied New Unitized Seals Ensure Long-lasting, Trouble-free Performance.
      • The Proper O.e. Specified Bearing Design Is Installed To Meet The Specific Radial And Axial Load Requirements Of Each Application. This Ensures Longer Bearing Life And Reliable Performance.
      • Thermostat Seal And Mounting Gasket Are Supplied For Ease Of Installation (where Applicable).
    • Gaskets Included: Yes
    • Hub Height (in): 5.56
    • Hub Height (mm): 141.3
    • Impeller Vane Quantity: 7
    • Material: Aluminum, Cast Iron, Steel
    • Mounting Hardware Included: No
    • Number of Hose Connectors: 4
    • Package Contents: Water Pump, Gaskets
    • Product Condition: Remanufactured
    • Pulley Included: Yes
    • Pulley Type: Flat Belt
    • Rotation: Counter-clockwise
  • CARDONE Remanufactured Water Pumps are re-engineered, built and tested to match O.E. performance. Each unit features new, O.E.-supplied unitized seals and application-specific bearings to ensure long-lasting, trouble-free product life. With 100% leak and hub-pull testing, CARDONE Remanufactured Water Pumps provide peace of mind for the long haul.
Brand: Cardone
Additional Fitment Information:
Vehicle
2006 - Hummer H2
Cardone
2007 Hummer H3 Engine Water Pump Cardone

P311-164B81F    55-13311  New

Qty:
$43.39
Cardone Engine Water Pump
  • New Water Pump
  • New CARDONE SELECT Water Pump
  • Product Attributes:
    • Duty Rating: Standard
    • E-Waste: No
    • FAQs:
      • After Mounting The Pump On The Vehicle And Running The Engine, The Shaft Broke. The Shaft Was Blue. Does This Mean The Pump Burned Up?
      • Do I Need Identification Off Of The Original Pump To Get The Correct Replacement?
      • For Most Modern Vehicles, Knowing The Engine Size Is Sufficient To Locate The Correct Replacement Water Pump. However, With Some Older Passenger Vehicles And Medium Duty Applications, You May Need An Identification Number That Is Either Stamped On The Ori
      • I Just Replaced The Water Pump And My Engine Is Overheating. Is The Pump Defective?
      • The Engine Overheating Could Be Due To Components Other Than The Water Pump. The Following Steps Should Be Taken Before Checking The Pump. Flush The System. Check Hoses, Clamps And Seals. Check Radiator Cap And Thermostat. Check For Proper And Sufficient
      • The Impeller On My Original Pump Looks Pitted. Is This Caused By Cavitation?
      • The Pump Did Not Burn Up, However The Shaft Broke Due To A Stress Fracture Caused By: Excessively High Temperatures, Improperly Torqued Mounting Bolts, Bent Or Distorted Pulley(s), Cracked Fan Bent, Not Mounted Squarely, Defective Fan Clutch, Improperly T
      • Yes, The Mostly Likely Cause Is Cavitation. When Inlet Pressures Of A Water Pump Fall Below The Design Specifications Due To A Leak Or Inadequate Coolant Levels, Tiny Vapor Bubbles Can Form In The Coolant At The Center Of The Impeller. When Coolant Conta
    • Features and Benefits:
      • 100% Leak Testing And Hub-pull Testing Ensures Reliable Performance.
      • O.e.-supplied New Unitized Seals Ensure Long-lasting, Trouble-free Performance.
      • The Proper O.e. Specified Bearing Design Is Installed To Meet The Specific Radial And Axial Load Requirements Of Each Application. This Ensures Longer Bearing Life And Reliable Performance.
      • Thermostat Seal And Mounting Gasket Are Supplied For Ease Of Installation (where Applicable).
    • Gaskets Included: Yes
    • Hub Height (in): 2.17
    • Hub Height (mm): 55.22
    • Impeller Vane Quantity: 6
    • Material: Aluminum
    • Mounting Hardware Included: No
    • Number of Hose Connectors: 0
    • Package Contents: Water Pump, Gaskets
    • Product Condition: New
    • Pulley Included: No
    • Rotation: Clockwise
  • Building on decades of experience using reverse engineering to remanufacture automotive pumps, CARDONE engineers have meticulously designed our CARDONE New Water Pumps to match O.E. performance. Each unit is 100% leak and hub-pull tested to ensure reliability. Supplied with O.E.-grade unitized seals, CARDONE New Water Pumps provide O.E. performance you can rely on.
Brand: Cardone
Additional Fitment Information:
Vehicle
2007 - Hummer H3
Cardone
2006 Hummer H2 Engine Water Pump Cardone

P311-54E0692    58-626  Remanufactured

Qty:
$5.40 $63.97
Cardone Engine Water Pump
  • Remanufactured Water Pump
  • w/1.88" Diameter Thermostat Outlet
  • Reman. A-1 CARDONE Water Pump
  • Product Attributes:
    • Casting Number: 12569519
    • Duty Rating: Standard
    • E-Waste: No
    • FAQs:
      • After Mounting The Pump On The Vehicle And Running The Engine, The Shaft Broke. The Shaft Was Blue. Does This Mean The Pump Burned Up?
      • Do I Need Identification Off Of The Original Pump To Get The Correct Replacement?
      • For Most Modern Vehicles, Knowing The Engine Size Is Sufficient To Locate The Correct Replacement Water Pump. However, With Some Older Passenger Vehicles And Medium Duty Applications, You May Need An Identification Number That Is Either Stamped On The Ori
      • I Just Replaced The Water Pump And My Engine Is Overheating. Is The Pump Defective?
      • The Engine Overheating Could Be Due To Components Other Than The Water Pump. The Following Steps Should Be Taken Before Checking The Pump. Flush The System. Check Hoses, Clamps And Seals. Check Radiator Cap And Thermostat. Check For Proper And Sufficient
      • The Impeller On My Original Pump Looks Pitted. Is This Caused By Cavitation?
      • The Pump Did Not Burn Up, However The Shaft Broke Due To A Stress Fracture Caused By: Excessively High Temperatures, Improperly Torqued Mounting Bolts, Bent Or Distorted Pulley(s), Cracked Fan Bent, Not Mounted Squarely, Defective Fan Clutch, Improperly T
      • Yes, The Mostly Likely Cause Is Cavitation. When Inlet Pressures Of A Water Pump Fall Below The Design Specifications Due To A Leak Or Inadequate Coolant Levels, Tiny Vapor Bubbles Can Form In The Coolant At The Center Of The Impeller. When Coolant Conta
    • Features and Benefits:
      • 100% Leak Testing And Hub-pull Testing Ensures Reliable Performance.
      • O.e.-supplied New Unitized Seals Ensure Long-lasting, Trouble-free Performance.
      • The Proper O.e. Specified Bearing Design Is Installed To Meet The Specific Radial And Axial Load Requirements Of Each Application. This Ensures Longer Bearing Life And Reliable Performance.
      • Thermostat Seal And Mounting Gasket Are Supplied For Ease Of Installation (where Applicable).
    • Gaskets Included: Yes
    • Hub Height (in): 6.63
    • Hub Height (mm): 168.4
    • Impeller Vane Quantity: 7
    • Material: Aluminum, Cast Iron, Steel
    • Mounting Hardware Included: No
    • Number of Hose Connectors: 3
    • Package Contents: Water Pump, Gaskets
    • Product Condition: Remanufactured
    • Pulley Included: Yes
    • Pulley Type: Flat Belt
    • Rotation: Counter-clockwise
  • CARDONE Remanufactured Water Pumps are re-engineered, built and tested to match O.E. performance. Each unit features new, O.E.-supplied unitized seals and application-specific bearings to ensure long-lasting, trouble-free product life. With 100% leak and hub-pull testing, CARDONE Remanufactured Water Pumps provide peace of mind for the long haul.
Brand: Cardone
Additional Fitment Information:
Vehicle
2006 - Hummer H2
Beck Arnley
2007 Hummer H3 Engine Water Pump 5 Cyl 3.7L Beck Arnley

P311-3967CD9    131-2396  New

Qty:
$54.73
Beck Arnley Engine Water Pump
  • WATER PUMP
  • Metal Impeller; Metal Impeller
  • Beck/Arnley parts meet foreign nameplate OE specifications for form, fit and function. Our product specialists work with a network of global sourcing partners so you can install the right part with confidence.
Brand: Beck Arnley
Additional Fitment Information:
Vehicle Block CC CID
2007 - Hummer H3 L 3654 223
Metrix
2008 Hummer H3 Engine Water Pump 8 Cyl 5.3L Metrix

P311-521CA10    W0133-2757204  New

Qty:
$186.99
Metrix Engine Water Pump
Brand: Metrix
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle Block CC CID
2008 - Hummer H3 V 5328 325
ACDelco
2008 Hummer H3 Engine Water Pump 8 Cyl 5.3L ACDelco

P311-2F2B9EE    W0133-2757204  New

Qty:
$485.85
ACDelco Engine Water Pump
  • This Original Equipment Manufacturer part is the same part that was made & installed by the car manufacturer at the factory where the car was produced.
  • GM Original Equipment
  • W/ Thermo. Housing
Brand: ACDelco
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle Block CC CID
2008 - Hummer H3 V 5328 325
Metrix
2008 Hummer H3 Engine Water Pump 8 Cyl 5.3L Metrix

P311-521CA10    W0133-2757204  New

Qty:
$181.52
Metrix Engine Water Pump
  • W/ Thermo. Housing
Brand: Metrix
Free Ground Shipping on this item
Additional Fitment Information:
Vehicle Block CC CID
2008 - Hummer H3 V 5328 325
Airtex
2007 Hummer H3 Engine Water Pump 5 Cyl 3.7L Airtex

P311-08FEDA1    AW5097  New

Qty:
$34.25
Airtex Engine Water Pump
  • New Water Pump
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2007 - Hummer H3 L 3654 223
Airtex
2008 Hummer H2 Engine Water Pump 8 Cyl 6.2L Airtex

P311-319C427    AW6009  New

Qty:
$115.04
Airtex Engine Water Pump
  • New Water Pump
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2008 - Hummer H2 V 6162 376
Airtex
2003 Hummer H2 Engine Water Pump 8 Cyl 6.0L Airtex

P311-2938C17    AW5104  New

Qty:
$79.43
Airtex Engine Water Pump
  • New Water Pump
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2003 - Hummer H2 V 5967 364
Airtex
2002 Hummer H1 Engine Water Pump 8 Cyl 6.5L Airtex

P311-31B93F2    AW5086  New

Qty:
$101.44
Airtex Engine Water Pump
  • New Water Pump
Brand: Airtex
Additional Fitment Information:
Vehicle Block CC CID
2002 - Hummer H1 V - 395
Cardone
2010 Hummer H3 Engine Water Pump 5 Cyl 3.7L Cardone

P311-0B1B97C    58-588  Remanufactured

Qty:
$29.69
Cardone Engine Water Pump
  • Remanufactured Water Pump
  • Reman. A-1 CARDONE Water Pump
  • Product Attributes:
    • Casting Number: Gm, 24576952, Gm 12620226, Gm/ico/2457952/15
    • Duty Rating: Standard
    • E-Waste: No
    • FAQs:
      • After Mounting The Pump On The Vehicle And Running The Engine, The Shaft Broke. The Shaft Was Blue. Does This Mean The Pump Burned Up?
      • Do I Need Identification Off Of The Original Pump To Get The Correct Replacement?
      • For Most Modern Vehicles, Knowing The Engine Size Is Sufficient To Locate The Correct Replacement Water Pump. However, With Some Older Passenger Vehicles And Medium Duty Applications, You May Need An Identification Number That Is Either Stamped On The Ori
      • I Just Replaced The Water Pump And My Engine Is Overheating. Is The Pump Defective?
      • The Engine Overheating Could Be Due To Components Other Than The Water Pump. The Following Steps Should Be Taken Before Checking The Pump. Flush The System. Check Hoses, Clamps And Seals. Check Radiator Cap And Thermostat. Check For Proper And Sufficient
      • The Impeller On My Original Pump Looks Pitted. Is This Caused By Cavitation?
      • The Pump Did Not Burn Up, However The Shaft Broke Due To A Stress Fracture Caused By: Excessively High Temperatures, Improperly Torqued Mounting Bolts, Bent Or Distorted Pulley(s), Cracked Fan Bent, Not Mounted Squarely, Defective Fan Clutch, Improperly T
      • Yes, The Mostly Likely Cause Is Cavitation. When Inlet Pressures Of A Water Pump Fall Below The Design Specifications Due To A Leak Or Inadequate Coolant Levels, Tiny Vapor Bubbles Can Form In The Coolant At The Center Of The Impeller. When Coolant Conta
    • Features and Benefits:
      • 100% Leak Testing And Hub-pull Testing Ensures Reliable Performance.
      • O.e.-supplied New Unitized Seals Ensure Long-lasting, Trouble-free Performance.
      • The Proper O.e. Specified Bearing Design Is Installed To Meet The Specific Radial And Axial Load Requirements Of Each Application. This Ensures Longer Bearing Life And Reliable Performance.
      • Thermostat Seal And Mounting Gasket Are Supplied For Ease Of Installation (where Applicable).
    • Gaskets Included: Yes
    • Hub Height (in): 3
    • Hub Height (mm): 76.2
    • Impeller Vane Quantity: 6
    • Material: Aluminum, Cast Iron, Steel
    • Mounting Hardware Included: No
    • Number of Hose Connectors: 0
    • Package Contents: Water Pump, Gaskets
    • Product Condition: Remanufactured
    • Pulley Included: No
    • Rotation: Clockwise
  • CARDONE Remanufactured Water Pumps are re-engineered, built and tested to match O.E. performance. Each unit features new, O.E.-supplied unitized seals and application-specific bearings to ensure long-lasting, trouble-free product life. With 100% leak and hub-pull testing, CARDONE Remanufactured Water Pumps provide peace of mind for the long haul.
Brand: Cardone
Additional Fitment Information:
Vehicle Block CC CID
2010 - Hummer H3 L 3654 223
Cardone
2009 Hummer H2 Engine Water Pump Cardone

P311-4D6A04F    55-13417  New

Qty:
$120.27
Cardone Engine Water Pump
  • New Water Pump
  • New CARDONE SELECT Water Pump
  • Product Attributes:
    • Duty Rating: Standard
    • E-Waste: No
    • FAQs:
      • After Mounting The Pump On The Vehicle And Running The Engine, The Shaft Broke. The Shaft Was Blue. Does This Mean The Pump Burned Up?
      • Do I Need Identification Off Of The Original Pump To Get The Correct Replacement?
      • For Most Modern Vehicles, Knowing The Engine Size Is Sufficient To Locate The Correct Replacement Water Pump. However, With Some Older Passenger Vehicles And Medium Duty Applications, You May Need An Identification Number That Is Either Stamped On The Ori
      • I Just Replaced The Water Pump And My Engine Is Overheating. Is The Pump Defective?
      • The Engine Overheating Could Be Due To Components Other Than The Water Pump. The Following Steps Should Be Taken Before Checking The Pump. Flush The System. Check Hoses, Clamps And Seals. Check Radiator Cap And Thermostat. Check For Proper And Sufficient
      • The Impeller On My Original Pump Looks Pitted. Is This Caused By Cavitation?
      • The Pump Did Not Burn Up, However The Shaft Broke Due To A Stress Fracture Caused By: Excessively High Temperatures, Improperly Torqued Mounting Bolts, Bent Or Distorted Pulley(s), Cracked Fan Bent, Not Mounted Squarely, Defective Fan Clutch, Improperly T
      • Yes, The Mostly Likely Cause Is Cavitation. When Inlet Pressures Of A Water Pump Fall Below The Design Specifications Due To A Leak Or Inadequate Coolant Levels, Tiny Vapor Bubbles Can Form In The Coolant At The Center Of The Impeller. When Coolant Conta
    • Features and Benefits:
      • 100% Leak Testing And Hub-pull Testing Ensures Reliable Performance.
      • O.e.-supplied New Unitized Seals Ensure Long-lasting, Trouble-free Performance.
      • The Proper O.e. Specified Bearing Design Is Installed To Meet The Specific Radial And Axial Load Requirements Of Each Application. This Ensures Longer Bearing Life And Reliable Performance.
      • Thermostat Seal And Mounting Gasket Are Supplied For Ease Of Installation (where Applicable).
    • Gaskets Included: Yes
    • Hub Height (in): 5.8
    • Hub Height (mm): 147.32
    • Impeller Vane Quantity: 7
    • Material: Aluminum
    • Mounting Hardware Included: No
    • Number of Hose Connectors: 3
    • Package Contents: Water Pump, Gaskets
    • Product Condition: New
    • Pulley Included: Yes
    • Pulley Type: Flat
    • Rotation: Clockwise
  • Building on decades of experience using reverse engineering to remanufacture automotive pumps, CARDONE engineers have meticulously designed our CARDONE New Water Pumps to match O.E. performance. Each unit is 100% leak and hub-pull tested to ensure reliability. Supplied with O.E.-grade unitized seals, CARDONE New Water Pumps provide O.E. performance you can rely on.
Brand: Cardone
Additional Fitment Information:
Vehicle
2009 - Hummer H2

Latest Hummer Repair and Water Pump Installation Advice

CarJunky AutoAdvice

Heater core 2001 Blazer

Showing 2 out of 6 Posts | Show 4 Hidden Posts
Question From DLTODARO on Heater core 2001 Blazer

Have a 2001 Blazer 4x4 w/ ZR2 package. The issue is heater core,, I paid to have it replaced after purchase in 2005 and again in 2010 by my self and brother in law. What a job. It has again gone out, dont understand why. I did replace radiator, water pump, intake gaskets all this summer so my only guess is debris has somehow damaged it. But the replacements are really junk with there swivel necks and seals. Cant find good ole copper and solder.
Anyways not really up to the 7 hour job it was last time so " Can I access the heater core a different way than removing the whole dash". Even if that means cutting a hole in the top of dash or firewall?

Thanks
Don

Response From Hammer Time

No, you cannot short cut it in any way. You need to flush the system thoroughly and then fill it with Dexcool. I would then test for electrolysis in the coolant with a voltmeter.

Response From Tom Greenleaf

Don - Are you saying this is on its third heater core already? Something is wrong with that scene. Pretty rare to me but I would be checking as HT suggested for some electrolysis problem. Ground things out if additional plain strap ground wires are easy and available.

I don't think this is about what type of antifreeze unless you are using battery acid this is too much. As said it calls for Dexcool which is still just a version of ethylene glycol and IDK why it or any is picking on the heater core?

Make sure hoses to core are correct. It would be a wild maybe that the input hose has too much direct pressure from the water pump. About all use a smaller hose for the in hose or an unseen restrictor in a hose so higher RPMs don't overwhelm the thing,

T

Response From Hammer Time

Dexcool which is still just a version of ethylene glycol and IDK why it or any is picking on the heater core?


Green regular coolant ---------- contains silicates

Dexcool --------------------------- No silicates

Response From DLTODARO

Why dexcool, everything I read steers away from dexcool. It still gets hot just fogging windows and smell. Will a product such as Blue devil seal the leak?

Response From Hammer Time Top Rated Answer

Don't believe everything you read from non-professionals.
DO NOT put sealer in the system or you will be replacing the radiator too.

Read this bulletin


INFORMATION

Bulletin No.: 05-06-02-001A

Date: July 16, 2008

Subject:
Information On Aluminum Heater Core and/or Radiator Replacement

Models:
2005 and Prior GM Passenger Cars and Light Duty Trucks (including Saturn)
2003-2005 HUMMER H2

Supercede:

This bulletin is being revised to update the Warranty Information. Please discard Corporate Bulletin Number 05-06-02-001 (Section 06 - Engine/Propulsion System).

Important:
2004-05 Chevrolet Aveo (Pontiac Wave, Canada Only) does not use DEX-COOL(R). Refer to the flushing procedure explained later in this bulletin.

The following information should be utilized when servicing aluminum heater core and/or radiators on repeat visits. A replacement may be necessary because erosion, corrosion, or insufficient inhibitor levels may cause damage to the heater core, radiator or water pump. A coolant check should be performed whenever a heater core, radiator, or water pump is replaced. The following procedures/ inspections should be done to verify proper coolant effectiveness.

Caution:
To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if the radiator cap or surge tank cap is removed while the engine and radiator are still hot.

Important:
If the vehicle's coolant is low, drained out, or the customer has repeatedly added coolant or water to the system, then the system should be completely flushed using the procedure explained later in this bulletin.

Technician Diagnosis

^ Verify coolant concentration. A 50% coolant/water solution ensures proper freeze and corrosion protection. Inhibitor levels cannot be easily measured in the field, but can be indirectly done by the measurement of coolant concentration. This must be done by using a Refractometer J 23688 (Fahrenheit scale) or J 26568 (centigrade scale), or equivalent, coolant tester. The Refractometer uses a minimal amount of coolant that can be taken from the coolant recovery reservoir, radiator or the engine block. Inexpensive gravity float testers (floating balls) will not completely analyze the coolant concentration fully and should not be used. The concentration levels should be between 50% and 65% coolant concentrate. This mixture will have a freeze point protection of -34 degrees Fahrenheit (-37 degrees Celsius). If the concentration is below 50%, the cooling system must be flushed.

^ Inspect the coolant flow restrictor if the vehicle is equipped with one. Refer to Service Information (SI) and/or the appropriate Service Manual for component location and condition for operation.

^ Verify that no electrolysis is present in the cooling system. This electrolysis test can be performed before or after the system has been repaired. Use a digital voltmeter set to 12 volts. Attach one test lead to the negative battery post and insert the other test lead into the radiator coolant, making sure the lead does not touch the filler neck or core. Any voltage reading over 0.3 volts indicates that stray current is finding its way into the coolant. Electrolysis is often an intermittent condition that occurs when a device or accessory that is mounted to the radiator is energized. This type of current could be caused from a poorly grounded cooling fan or some other accessory and can be verified by watching the volt meter and turning on and off various accessories or engage the starter motor. Before using one of the following flush procedures, the coolant recovery reservoir must be removed, drained, cleaned and reinstalled before refilling the system.

Notice:
^ Using coolant other than DEX‐COOL(R) may cause premature engine, heater core or radiator corrosion. In addition, the engine coolant may require changing sooner, at 30,000 miles (50,000 km) or 24 months, whichever occurs first. Any repairs would not be covered by your warranty. Always use DEX‐COOL(R) (silicate free) coolant in your vehicle.

^ If you use an improper coolant mixture, your engine could overheat and be badly damaged. The repair cost would not be covered by your warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core and other parts.

Flushing Procedures using DEX-COOL(R)

Important:
The following procedure recommends refilling the system with DEX-COOL(R), P/N 12346290 (in Canada, use P/N 10953464), GM specification 6277M. This coolant is orange in color and has a service interval of 5 years or 240,000 km (150,000 mi). However, when used on vehicles built prior to the introduction of DEX-COOL(R), maintenance intervals will remain the same as specified in the Owner's Manual.

^ If available, use the approved cooling system flush and fill machine (available through the GM Dealer Equipment Program) following the manufacturer's operating instructions.

^ If approved cooling system flush and fill machine is not available, drain the coolant and dispose of properly following the draining procedures in the appropriate Service Manual. Refill the system using clear, drinkable water and run the vehicle until the thermostat opens. Repeat and run the vehicle three (3) times to totally remove the old coolant or until the drained coolant is almost clear. Once the system is completely flushed, refill the cooling system to a 50%-60% concentration with DEX‐COOL(R), P/N 12346290 (in Canada, use P/N 10953464), GM specification 6277M, following the refill procedures in the appropriate Service Manual.

If a Service Manual is not available, fill half the capacity of the system with 100% DEX-COOL(R), P/N 12346290 (in Canada, use P/N 10953464), GM specification 6277M. Then slowly add clear, drinkable water (preferably distilled) to the system until the level of the coolant mixture has reached the base of the radiator neck. Wait two (2) minutes and reverify the coolant level. If necessary, add clean water to restore the coolant to the appropriate level.

Once the system is refilled, reverify the coolant concentration using a Refractometer J 23688 (Fahrenheit scale) or J 26568 (centigrade scale) coolant tester, or equivalent. The concentration levels should be between 50% and 65%.

Coolant dripping below heater core inlet hose

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Question From anavrin on Coolant dripping below heater core inlet hose

First of all, thanks in advance for any help or advice. It is really great there are forums like this to help people, especially when money is tight.

2005
Chevrolet
Equinox
3.4
70,000 miles

I just have a quick question before I start to tear into the dash to replace the heater core. I have the classic symptoms of a heater core leak (coolant smell and thick foggy windows), but don't have any dampness anywhere on the vehicle floor. It is definitely leaking coolant, as I topped it off and it was gone a few days later (I haven't been driving it). I went looking for leaks and noticed there is a consistent drip from something (a valve?) below the heater core inlet hose. See picture below for the location:



Can somebody let me know what that is called? And if possible, what might cause it to be leaking when the engine's not running?

Thank you

Response From Hammer Time

That's the drain for the A/C condensation. Assuming it's cold where you are and that can't be condensation water from the A/C, it would have to be the coolant you have been looking for.

Response From anavrin

Hey Hammer Time,

Thank you for the quick and spot on reply. That definitely gives me more to research. I'm guessing the heater core is leaking and it is somehow coming out the a/c condensation drain. I'll update this post when I've got it figured.

Thanks again.

Response From Hammer Time

Nothing to figure out. It's very common to leak out there with a bad heater core. Where the coolant comes out is determined by the design of the housing and which direction the coolant runs.

Response From Discretesignals

Weird picture... Looks like a brake booster with heater hose connections coming out of it. Must be right hand drive.

Response From Hammer Time

That's the Equinox design. It drains on the driver's side.

Response From Discretesignals Top Rated Answer

Some good info, so you don't have a repeat failure:

INFORMATION

Bulletin No.: 05-06-02-001A

Date: July 16, 2008

Subject:
Information On Aluminum Heater Core and/or Radiator Replacement

Models:
2005 and Prior GM Passenger Cars and Light Duty Trucks (including Saturn)
2003-2005 HUMMER H2

Supercede:

This bulletin is being revised to update the Warranty Information. Please discard Corporate Bulletin Number 05-06-02-001 (Section 06 - Engine/Propulsion System).

Important:
2004-05 Chevrolet Aveo (Pontiac Wave, Canada Only) does not use DEX-COOL(R). Refer to the flushing procedure explained later in this bulletin.

The following information should be utilized when servicing aluminum heater core and/or radiators on repeat visits. A replacement may be necessary because erosion, corrosion, or insufficient inhibitor levels may cause damage to the heater core, radiator or water pump. A coolant check should be performed whenever a heater core, radiator, or water pump is replaced. The following procedures/ inspections should be done to verify proper coolant effectiveness.

Caution:
To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if the radiator cap or surge tank cap is removed while the engine and radiator are still hot.

Important:
If the vehicle's coolant is low, drained out, or the customer has repeatedly added coolant or water to the system, then the system should be completely flushed using the procedure explained later in this bulletin.

Technician Diagnosis

^ Verify coolant concentration. A 50% coolant/water solution ensures proper freeze and corrosion protection. Inhibitor levels cannot be easily measured in the field, but can be indirectly done by the measurement of coolant concentration. This must be done by using a Refractometer J 23688 (Fahrenheit scale) or J 26568 (centigrade scale), or equivalent, coolant tester. The Refractometer uses a minimal amount of coolant that can be taken from the coolant recovery reservoir, radiator or the engine block. Inexpensive gravity float testers (floating balls) will not completely analyze the coolant concentration fully and should not be used. The concentration levels should be between 50% and 65% coolant concentrate. This mixture will have a freeze point protection of -34 degrees Fahrenheit (-37 degrees Celsius). If the concentration is below 50%, the cooling system must be flushed.

^ Inspect the coolant flow restrictor if the vehicle is equipped with one. Refer to Service Information (SI) and/or the appropriate Service Manual for component location and condition for operation.

^ Verify that no electrolysis is present in the cooling system. This electrolysis test can be performed before or after the system has been repaired. Use a digital voltmeter set to 12 volts. Attach one test lead to the negative battery post and insert the other test lead into the radiator coolant, making sure the lead does not touch the filler neck or core. Any voltage reading over 0.3 volts indicates that stray current is finding its way into the coolant. Electrolysis is often an intermittent condition that occurs when a device or accessory that is mounted to the radiator is energized. This type of current could be caused from a poorly grounded cooling fan or some other accessory and can be verified by watching the volt meter and turning on and off various accessories or engage the starter motor. Before using one of the following flush procedures, the coolant recovery reservoir must be removed, drained, cleaned and reinstalled before refilling the system.

Notice:
^ Using coolant other than DEX‐COOL(R) may cause premature engine, heater core or radiator corrosion. In addition, the engine coolant may require changing sooner, at 30,000 miles (50,000 km) or 24 months, whichever occurs first. Any repairs would not be covered by your warranty. Always use DEX‐COOL(R) (silicate free) coolant in your vehicle.

^ If you use an improper coolant mixture, your engine could overheat and be badly damaged. The repair cost would not be covered by your warranty. Too much water in the mixture can freeze and crack the engine, radiator, heater core and other parts.

Flushing Procedures using DEX-COOL(R)

Important:
The following procedure recommends refilling the system with DEX-COOL(R), P/N 12346290 (in Canada, use P/N 10953464), GM specification 6277M. This coolant is orange in color and has a service interval of 5 years or 240,000 km (150,000 mi). However, when used on vehicles built prior to the introduction of DEX-COOL(R), maintenance intervals will remain the same as specified in the Owner's Manual.

^ If available, use the approved cooling system flush and fill machine (available through the GM Dealer Equipment Program) following the manufacturer's operating instructions.

^ If approved cooling system flush and fill machine is not available, drain the coolant and dispose of properly following the draining procedures in the appropriate Service Manual. Refill the system using clear, drinkable water and run the vehicle until the thermostat opens. Repeat and run the vehicle three (3) times to totally remove the old coolant or until the drained coolant is almost clear. Once the system is completely flushed, refill the cooling system to a 50%-60% concentration with DEX‐COOL(R), P/N 12346290 (in Canada, use P/N 10953464), GM specification 6277M, following the refill procedures in the appropriate Service Manual.

If a Service Manual is not available, fill half the capacity of the system with 100% DEX-COOL(R), P/N 12346290 (in Canada, use P/N 10953464), GM specification 6277M. Then slowly add clear, drinkable water (preferably distilled) to the system until the level of the coolant mixture has reached the base of the radiator neck. Wait two (2) minutes and reverify the coolant level. If necessary, add clean water to restore the coolant to the appropriate level.

Once the system is refilled, reverify the coolant concentration using a Refractometer J 23688 (Fahrenheit scale) or J 26568 (centigrade scale) coolant tester, or equivalent. The concentration levels should be between 50% and 65%.

Flushing Procedures using Conventional Silicated (Green Colored) Coolant

Important:
2004-2005 Chevrolet Aveo (Pontiac Wave, Canada Only) does not use DEX‐COOL(R). The Aveo and Wave are filled with conventional, silicated engine coolant that is blue in color. Silicated coolants are typically green in color and are required to be drained, flushed and refilled every 30,000 miles (48,000 km). The Aveo and Wave are to be serviced with conventional, silicated coolant. Use P/N 12378560 (1 gal) (in Canada, use P/N 88862159 (1 L). Refer to the Owner's Manual or Service Information (SI) for further information on OEM coolant.

Important:
Do not mix the OEM orange colored DEX-COOL(R) coolant with green colored coolant when adding coolant to the system or when servicing the vehicle's cooling system. Mixing the orange and green colored coolants will produce a brown coolant which may be a customer dissatisfier and will not extend the service interval to that of DEX-COOL(R). Conventional silicated coolants offered by GM Service and Parts Operations are green in color.

^ If available, use the approved cooling system flush and fill machine (available through the GM Dealer Equipment Program) following the manufacturer's operating instructions.

^ If approved cooling systems flush and fill machine is not available, drain coolant and dispose of properly following the draining procedures in appropriate Service Manual. Refill the system using clear, drinkable water and run vehicle until thermostat opens. Repeat and run vehicle three (3) times to totally remove old coolant or until drained coolant is almost clear. Once the system is completely flushed, refill the cooling system to a 50%-60% concentration with a good quality ethylene glycol base engine coolant, P/N 12378560, 1 gal (in Canada, use P/N 88862159 1 L), conforming to GM specification 1825M, or recycled coolant conforming to GM specification 1825M, following the refill procedures in the appropriate Service Manual.

If a Service Manual is not available, fill half the capacity of the system with 100% good quality ethylene glycol base (green colored) engine coolant, P/N 12378560 1 gal., (in Canada, use P/N 88862159 1 L) conforming to GM specification 1825M. Then slowly add clear, drinkable water (preferably distilled) to system until the level of the coolant mixture has reached the base of the radiator neck. Wait two (2) minutes and recheck coolant level. If necessary, add clean water to restore coolant to the appropriate level.

Once the system is refilled, recheck the coolant concentration using a Refractometer J 23688 (Fahrenheit scale) or J 26568 (centigrade scale) coolant tester, or equivalent. Concentration levels should be between 50% and 65%.

Response From anavrin

Wow. Great info. This place is awesome. Thanks for your help. I'll make sure to use the right coolant next time. I've got a date with the dashboard this weekend.

Response From Discretesignals

Just be careful and don't blow your face off working around the air bag system. Your probably going to be working around zones 3 & 5, so disarm those zones before removing any components or working around their circuits after disconnecting the battery.



SIR SERVICE PRECAUTIONS

CAUTION: When performing service on or near the SIR components or the SIR wiring, the SIR system must be disabled. Refer to SIR Disabling and Enabling Zones. Failure to observe the correct procedure could cause deployment of the SIR components, personal injury, or unnecessary SIR system repairs.

The inflatable restraint sensing and diagnostic module (SDM) maintains a reserved energy supply. The reserved energy supply provides deployment power for the air bags. Deployment power is available for as much as 1 minute after disconnecting the vehicle power. Disabling the SIR system prevents deployment of the air bags from the reserved energy supply.


GENERAL SERVICE INSTRUCTIONS

The following are general service instructions which must be followed in order to properly repair the vehicle and return it to its original integrity:
- Do not expose inflator modules to temperatures above 65 °C (150 °F).
- Verify the correct replacement part number. Do not substitute a component from a different vehicle.
- Use only original GM replacement parts available from your authorized GM dealer. Do not use salvaged parts for repairs to the SIR system.

Discard any of the following components if it has been dropped from a height of 91 cm (3 ft) or greater:
- Inflatable restraint sensing and diagnostic module (SDM)
- Inflatable restraint I/P module
- Inflatable restraint steering wheel module
- Inflatable restraint steering wheel module coil
- Inflatable restraint roof rail modules
- Inflatable restraint sides (SIS)
- Inflatable restraint seat be pretensioners
- Inflatable restraint front end sensor.





Zone 3 disarm:

1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Locate the body control module fuse center then remove the fuse center cover.

5. Locate and remove the AIR BAG fuse from the body control module fuse center.

IMPORTANT: With the AIR BAG fuse removed and the ignition switch in the ON position, the AIR BAG warning indicator illuminates. This is normal operation, and does not indicate an SIR system malfunction.

6. Remove the connector position assurance (CPA) from the steering wheel module coil connector.

7. Disconnect the steering wheel module coil connector from the vehicle harness connector.

ENABLING PROCEDURE
1. Remove the key from the ignition switch.

2. Connect the steering wheel module coil connector to the vehicle harness connector.
3. Install the CPA to the steering wheel module coil connector.

4. Install the AIR BAG fuse into the body control module fuse center.
5. Install the body control module fuse center cover.
6. Use caution while reaching in and turn the ignition switch to the ON position.The AIR BAG indicator will flash then turn OFF.
7. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.

Zone 5 disarm:


SIR DISABLING AND ENABLING ZONE 5

DISABLING PROCEDURE
1. Turn the steering wheel so that the vehicles wheels are pointing straight ahead.
2. Turn the ignition switch to the OFF position.
3. Remove the key from the ignition switch.
4. Locate the body control module fuse center, then remove the fuse center cover.

5. Locate and remove the AIR BAG fuse from the body control module fuse center.

IMPORTANT: With the AIR BAG fuse removed and the ignition switch in the ON position, the AIR BAG warning indicator illuminates. This is normal operation, and does not indicate an SIR system malfunction.

6. Remove the connector position assurance (CPA) from the I/P module connector.
7. Disconnect the I/P module connector from the vehicle harness connector.

ENABLING PROCEDURE
1. Remove the key from the ignition switch.

2. Connect the I/P module connector to the vehicle harness connector.
3. Install the CPA to the I/P module connector.

4. Install the AIR BAG fuse into the body control module fuse center.
5. Install the body control module fuse center cover.
6. Use caution while reaching in and turn the ignition switch to the ON position.The AIR BAG indicator will flash then turn OFF.
7. Perform the SIR Diagnostic System Check if the AIR BAG warning indicator does not operate as described. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.

Response From anavrin

Thanks Discretesignals. I will definitely be careful. You may have saved my face. :)