2010 GMC TPS

[rws262]

Yes mine says specifically 2010 GMC Sierra and described the same problem as you just described.

 

The code that the dealer read was P2119-"throttle return to default." that sounds like a sensor issue and it's not possible to replace just the throttle body or just the sensor. They replaced the entire unit but told me that they did not replace the sensor which is not correct and led me to be a little irked.

[BlackZ71Silverado]

There should be a "refund departmenr" address on the letter. Send a copy of the bill marked PAID to them and they will send you a refund check. That's what it says to do if no luck with dealership. Give it a shot, it's worth a try.

 

 

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[EX-F150 owner]

Just received the same letter for my 2010.

 

If you don't mind sharing, how much did they charge for this repair? Did they say what failed within the throttle body? Hope it works out for you.

[Mr_Rooney]

I posted a copy of the main body of my letter for a 2008 Silverado in this post http://www.gm-trucks...5

 

(Our 2010 Enclave has a near identical letter on revised oil change schedule and timing chain warrenty extension)

 

Based on a few of the posts in the above thread I sent a letter to Chevrolet with these 4 questions:

1. Does the vehicle have to be in Engine Reduced Power mode before a dealer will address the problem described in the letter?
   
2. Does driving the vehicle a long distance under Engine Reduced Power cause powertrain or emission equipment damage that would be the owners responsibility for repairs?
   
3. Does one need to have a related ‘P’ code stored to prove an Engine Reduced Power has occurred?
   
4. If it is determined that the throttle position sensor is not the cause but instead a faulty wiring or some other component in the throttle control system, who pays for the repair?
   

 

I was suprised to get a phone call from Chevrolet - a very nice lady who had no technical background to understand the questions. After a few minutes of discussion I

asked her to have someone with a technical background to call me or at least review the questions. A few days later a young man calls me from Chevrolet. He was just

going through the same scripted response as the lady. He had no technical backgound to understand my questions either. I expressed my dissapointment in not

getting any usable responses/information with respect to my questions and said close the case if this is all I will get from Chevrolet.

 

 

 

A few weeks ago I had to disconnect the battery to replace a front impact sensor. Whatever cleared in the electronics made a

big difference in idle and throttle response.

[rws262]

Just a follow up. The dealer told me they would not repair under the GM bulletin so I got in contact directly with GM Reimbursements and after review they did reimburse me for the repair. Not sure what the dealership was trying to pull.

 

The cost of the repair after tax was $520 and that was what I was reimbursed. It took no more than two weeks to get the check from the day I mailed in the claim with supporting receipt, dealer invoice showing the repair and the claim form. GM is back in my good graces.

[2007SierraSLT]

Just a follow up. The dealer told me they would not repair under the GM bulletin so I got in contact directly with GM Reimbursements and after review they did reimburse me for the repair. Not sure what the dealership was trying to pull.

 

The cost of the repair after tax was $520 and that was what I was reimbursed. It took no more than two weeks to get the check from the day I mailed in the claim with supporting receipt, dealer invoice showing the repair and the claim form. GM is back in my good graces.

 

Looks like your dealer was trying to pull a fast one myself, I'd go there and let them have it for trying to screw you

 

everything is an assembly on these trucks and neither can't be serviced seperate

[gmtech4]

the message means there is a code ,,,,

 

i would call the regional service manager and put in a complaint,,,dealers HATE having a visit from him,,,,,,HATE

[Mr_Rooney]

Back in January the "engine power is reduced was coming on regularly. Called the closest dealer who said I had to bring it in with the codes for the TPS warrenty. Well I could not be without a vehicle for a day and driving it in that mode would take forever. Or I could pay for a tow. So I decided to just replace the throttle body myself. Here are the codes, the P2135 all the time and the P0121 sometimes.

 

 

 

Here is the original throttle body

 

 

The red arrow points to the light grey locking tab that needs to be removed before the main plug can be removed.

 

 

New throttle body. About $135 delivered.

 

 

Installed in less than 10 minutes. You can see 3 of the 4 nuts/bolts.

 

 

Curious about the innards of one of these throttle bodies I decided to open up the old one.

Looks like all I have to do is pop off those clips.

 

 

Now much in there. I did expect more with the multip prong input. Tried to take out

the motor, sheared off one screw head, Other came out with some difficulty. Pried a bit

on the housing but no budge. Tossed in trash.

 

[PH-Wolf]

I had the "Service Traction Control", "Service Stability Control", "Engine Power Is Reduced" messaged also the same two codes on my 2011: P2135 an P0121. my TPS sensor failed on me at a little over 52,000 miles. I was on my way to a horse fair in Springfield, IL this past March 2013, about 100 miles from my destination. I pulled into a hotel after 15 mins restarted and it was fine, drove another 80 miles an it failed again. limped the rest of the 20 miles on the side streets to my hotel and limped it to Friendly Chevy, in Springfield, IL in the morning. They found the TPS bad, replaced it, my total cost was $257 to fix. I can't complain cause this is the first issue I had with this truck as is was flawless up to this point. I now have over 57,300 miles and never had an issue again. Friendly Chevrolet in Springfield, IL was an awesome Dealer and I thank them for their GREAT service!

My TPS sensor looks exactly like what Mr_Rooney's pictures, I know GM uses this same sensor on a whole bunch of engines. I have the 4.3L V6 in my 2011.