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Dorman
2008 Hummer H3 Engine Coolant Reservoir Cap Dorman

P311-2222368    W0133-1778345  New

Qty:
$17.40
Dorman Engine Coolant Reservoir Cap
Brand: Dorman
Additional Fitment Information:
Vehicle
2008 - Hummer H3
Full
2007 Hummer H3 Air Filter Full

P311-081CBD5    W0133-1765518  New

Qty:
$17.21
Full Air Filter
Brand: Full
Additional Fitment Information:
Vehicle
2007 - Hummer H3
ACDelco
2007 Hummer H3 Fuel Injector ACDelco

P311-44026D3    W0133-1866299  New

Qty:
$89.66
ACDelco Fuel Injector
  • 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
Additional Fitment Information:
Vehicle
2007 - Hummer H3
ACDelco
2007 Hummer H3 Air Filter ACDelco

P311-1E50119    W0133-1765518  New

Qty:
$38.14
ACDelco Air Filter
  • Professional
Brand: ACDelco
Additional Fitment Information:
Vehicle
2007 - Hummer H3
ACDelco
2010 Hummer H3T Engine Mount 5 Cyl 3.7L ACDelco

P311-599B812    W0133-1857405  New

Qty:
$178.86
ACDelco Engine Mount
  • 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
Additional Fitment Information:
Vehicle Block Engine CID CC
2010 - Hummer H3T L 5 Cyl 3.7L 223 3654
ACDelco
2010 Hummer H3T Engine Mount 5 Cyl 3.7L ACDelco

P311-07F4664    W0133-1857418  New

Qty:
$182.93
ACDelco Engine Mount
  • 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
Additional Fitment Information:
Vehicle Block Engine CID CC
2010 - Hummer H3T L 5 Cyl 3.7L 223 3654
ACDelco
2006 Hummer H3 Starter Motor ACDelco - w/Core

P311-214629D    W0133-1774836  New

Qty:
$50.00 $358.98
ACDelco Starter Motor
  • 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 OE Remanufactured
  • Reman.
  • w/Core
Brand: ACDelco
Additional Fitment Information:
Vehicle
2006 - Hummer H3
ACDelco
2010 Hummer H3T Horn Relay ACDelco

P311-249E985    W0133-1944295  New

Qty:
$42.56
ACDelco Horn Relay
  • 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
Additional Fitment Information:
Vehicle
2010 - Hummer H3T
Gates
2010 Hummer H3T Radiator Cap Gates

P311-229412C    W0133-1690827  New

Qty:
$28.02
Gates Radiator Cap
  • OE Type
Brand: Gates
Additional Fitment Information:
Vehicle
2010 - Hummer H3T
ACDelco
2010 Hummer H3T Alternator 5 Cyl 3.7L ACDelco - New

P311-4FCD410    W0133-1873314  New

Qty:
$271.06
ACDelco Alternator
  • 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
  • New
Brand: ACDelco
Additional Fitment Information:
Vehicle Block Engine CID CC
2010 - Hummer H3T L 5 Cyl 3.7L 223 3654

Showing 1 - 10 of 2,532 Products.


Latest Hummer H3 Repair Guides & Installation Advice

CarJunky AutoAdvice

Hummer H3 transmission

Showing 3 out of 3 Posts
Question From shnedy on Hummer H3 transmission

I have a Hummer H3 2006 5 cylinder stock. It has 74,000 miles on it. The transmission will go in to low gear and runs like normal and will go in to reverse and works fine. but if it is in drive its like being in neutral. What happend was we moved the h3 out of the drive way and drove only a few yards then heard a pop sound and that was it .no drive or 3rd or 2nd gear . only low or 1st and R . what could it be?

Response From martycpeterson Top Rated Answer

My H3 just did the exact same thing after pulling out of my driveway. What ended up being the problem? And was it spendy?

Response From Hammer Time

Please read forum rules before posting. This question is 2 years old.


RULES

20008 Silverado p0121 now 0507

Showing 2 out of 7 Posts | Show 5 Hidden Posts
Question From comnavguy on 20008 Silverado p0121 now 0507

This is a 2008 Silverado with V8 5.4 L 128,667 miles. It failed inspection because of code 0121 Throttle Position Sensor. Replaced the sensor and now it is showing code 0507 idle out of specs and it idles up to 2500 RPM in neutral and park but once in gear drops back to normal with or without A/C on.

The book says that the idle air control valve is in the throttle body. We replaced the throtle body, and we still have the same problem.

Help. Help. Inspection is due.

Response From Double J Top Rated Answer

Look into this TSB......May help

Subject: SES Light, Idle Surge, and/or Reduced Engine Power Mode with DTCs P0068, P0121, P0506, P0507, P1516, P2101, P2119, and/or P2176 - Clean Throttle Body and Perform Idle Learn Reset

Models: 2007 Buick Rainier

2007-2009 Cadillac CTS-V, Escalade

2008-2009 Chevrolet Colorado

2006-2009 Chevrolet Avalanche, Corvette, Express, Impala, Monte Carlo, Silverado, Suburban, Tahoe, Trail Blazer

2008-2009 GMC Canyon

2006-2009 GMC Envoy, Savana, Sierra, Yukon

2007-2008 Hummer H2

2008-2009 Hummer H3

2007-2008 Pontiac Grand Prix

2008-2009 Pontiac G8

2006-2009 Saab 97x

With a V8 Engine


This PI was superseded to update model years and add information concerning idle surge, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 that may be experienced on high mileage vehicles. Please discard PIP4578.
The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. condition/concern:
As carbon builds up in the throttle body of a high mileage vehicle, the ECM/PCM learns to compensate by increasing the throttle plate angle.


If enough carbon builds up, an idle surge, deceleration surge, tip-in hesitation, reduced engine power mode, and/or DTCs P0068, P0121, P1516, P2101, P2119, and/or P2176 may be experienced on high mileage vehicles.


If the throttle body is cleaned without performing an "idle learn reset/reset idle learn" with the Tech 2, the ECM/PCM may continue to compensate for previous carbon build up, causing it to return with a similar concern as well as DTCs P0121, P0506, and/or *** * >> >>>P0507.<<<<


In a similar fashion, if the ECM/PCM of a high mileage vehicle is replaced and/or reprogrammed without performing the Throttle/Idle Learn outlined in SI, the ECM/PCM may no longer compensate for existing carbon build up in the throttle body, causing it to return with a similar concern as well as DTCs P0121, P0506, and/or P0507.


Recommendation/Instructions:
If SI diagnosis does not isolate the cause of this concern, inspect the throttle body bore and plate for obvious carbon build up.


If carbon is present, follow the Throttle Body Cleaning Procedure in SI to clean the throttle body.


After ensuring that the throttle body bore and plate are clean, perform an "idle learn reset/reset idle learn" with the Tech 2 and re-evaluate the concern.


Notice: Depending on the vehicle you are working on, the "idle learn reset/reset idle learn" is normally found on the Tech 2 ECM menu for Module Set Up or Special Functions/TAC System.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.
GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

Response From comnavguy

the idle learn/reset re-learn procedure cured the problem. The TPS sensor was bad.

Thanks for the help guys.

Response From Discretesignals

Good find J!

Glad to read it was a simple case of relearn. Thanks for the follow up Closed as solved. Can be reopened upon request by the OP.

Response From Discretesignals

This has electronic throttle control. The throttle plate is opened and closed by a servo motor that the PCM controls which allows the PCM to control the idle speed.

Did you test the TPS before you changed it or are you a parts swapper? The P0121 doesn't necessarily mean the TPS is the fault. It is a TPS performance code that basically means the throttle position didn't correspond with the expected engine load and throttle position for more than a second. A MAP or engine performance issue could cause that code to appear.

Now you have another issue that you could have created. You need to look at TPS data to see if the PCM is commanding that high idle or if you have something such as a vacuum leak causing that.

Response From comnavguy

A sometimes partsswapper. In this case, yes. I didn't know how to test the part and still don't. MAP is OK and no vacuum leaks.

We did not have the idle problem until we replaced the TPS. The truck was running smoothly. Can you explain that? Why would replacing the TPS cause idle to go haywire?

Response From Discretesignals

Without seeing some scan tool data or even some test data, your guess is good as mine.

'05 Chevy Colorado Strange Idle Problem

Showing 2 out of 4 Posts | Show 2 Hidden Posts
Question From aakers79 on '05 Chevy Colorado Strange Idle Problem

I have a 2005 chevy colorado 4cylinder, 5 speed manual, 58K miles, and I have had a recurring problem with an erratic idle. The problem occurs usually when I am coasting with the clutch in or in neutral, which I normally do when coming to a stop. The RPM's will drop as they normally should when not applying any throttle, but they continue to drop below 500 rpms, which causes the truck to shudder. The RPM's usually "bounce" back up to normal and then drop down low again.

The first time this happened was about a month after I had bought it and the truck had around 50K miles. The problem happened infrequently at first and I didn't think much of it until it got worse. Soon the engine light came on and I got the trouble code for a communication error between the crankshaft position sensor and the camshaft position sensor. I replaced the camshaft sensor and wiggled some wires around but the problem persisted. The crankshaft position sensor is not available to purchase yet and so I brought the truck in to the shop. They said that I had a major misfire but they didn't know why. They reset the computer and the truck ran fine. I got off light paying only $125.

The problem returned in 2 months gradually but got worse much faster and this time the truck stalled a few times when I started it and the check engine light was back on. I managed to get it on the road and I got a trouble signal that said that I had "reduced power" but I managed to make it to the local Chevy dealer (less than a mile away).

This shop said that it was the "crankshaft solenoid" which I didn't know existed, and they charged me $300 for the job. The truck was fine for a few more weeks.

Now the problem occurs on occasion but has not yet gotten too bad. The engine light has not come back on either, but I don't want to wait too long for it to come back.

Does anyone have any ideas for me? I don't want to sink any more money into this problem and I do consider myself to be mechanically inclined, but I am stumped on this one.

Response From steve d

Hello I had the same problem with my 05 chevy colorado I had the problems you spoke of and it got even worse it stoppoed ideling. It was a easy fix I dont know if you can get your hands on a truck code computer but if not just get carb choke and throddle body cleaner take off the aircleaner box and remove the throttle body there will be carbon in it where the flap is clean it real good and put it all back togther after it is together clear all the codes. start the truck after clearing the codes it will run ruff. Trun the engine off wait 2 min and turn it back on the truck will run perfect. If you dont have a code reader go to the auto part store most will read it for free and ask them to just clear the codes. steve

Response From Tom Greenleaf

Steve - that thread is a year and a half old. I sure hope it's already done!

T

Response From Double J Top Rated Answer

Look into this......Don't know if it will help or not...
Let us know.....


Bulletin No.: 07-06-04-019
Date: June 21, 2007
TECHNICAL Subject:
Intermittent MIL/SES, DTC P2138 with Reduced Engine Power (Repair Instrument Panel (IP) to Body Harness Connector) Models:
2005-2008 GM Passenger Cars and Light Duty Trucks (Including Saturn)
2005-2008 HUMMER H2
2006-2008 HUMMER H3
2005-2008 Saab 9-7X
Condition
Some customers may comment on an intermittent MIl/SES light Illuminated with a message center or an indicator that displays Reduced Engine Power. DTC P2138-Accelerator Pedal Position (APP) Sensor 1-2 Correlation may be set. The voltage difference between APP sensor 1 and APP sensor 2 exceeds a predetermined value for more than 2 seconds.
Refer to DTC P2138 in SI for further diagnostics.
Cause
On some vehicles, the IP to body harness connector, which carries the APP signal to the ECM/PCM, is located in the left hand kick panel area and if the kick panel is not sealed properly, water enters and causes a short in the APP circuits setting a P2138 code.
Correction
Do Not replace the accelerator pedal assembly.
Locate the IP to body harness connector, which may be located in and around the left hand kick panel area. Check to see if there is a water leak into the area and repair as necessary.