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We stock Throttle Position Sensor parts for most Hummer models, including H2, H3.

2007 Hummer H2 Throttle Position Sensor 8 Cyl 6.0L Dorman

P311-2727E5E    977-000  New

S2006 , 217-2293 , 12570800 , S20006 , EC3401

Dorman Throttle Position Sensor
  • Product Attributes:
    • California Proposition 65: Warning: Cancer And Reproductive Harm ?Çô Www.p65warnings.ca.gov
    • Color/Finish: Black
    • Terminal Type: Blade
Brand: Dorman
Additional Fitment Information:
Vehicle Block Engine CID CC
2007 - Hummer H2 V 8 Cyl 6.0L 364 5967
Standard Ignition
2009 Hummer H2 Throttle Position Sensor 8 Cyl 6.2L Standard Ignition

P311-5F0CEAD    TH445  New

EC3401 , 977-000 , 600-2614 , 19259452 , TPS4275 , 71-7984 , 5S13425 , TPS4270

Standard Ignition Throttle Position Sensor
  • Throttle Position Sensor
  • OE Type
  • Product Attributes:
    • Connector Gender: Female
    • Connector Type: Plug In
    • Terminal Gender: Male
    • Terminal Quantity: 6
    • Terminal Type: Blade Terminals
  • Direct-fit replacement sensor restores proper information transfer to the ECU on throttle position to provide efficient fuel economy and engine performance. Quality construction promotes accurate communication of throttle valve angle to the vehicle's computer for improved performance. This replacement part allows you to replace only the damaged sensor, not the entire throttle body unit - saving you both time and money, allowing you to get your vehicle back on the road quicker. Robust design and high grade materials meet the stringent demands of today's service professional.
Brand: Standard Ignition
Additional Fitment Information:
Vehicle Block Engine CID CC
2009 - Hummer H2 V 8 Cyl 6.2L 376 -

Latest Hummer Repair and Throttle Position Sensor Installation Advice

CarJunky AutoAdvice

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.

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.