2008 Silverado P0121 and P0449 codes

[EX-F150 owner]

This is on my Sister's truck. The dealer is telling her that the throttle body needs replaced as well as the vent soleniod but that the throttle body is not covered under the customer satisfaction compain, is that correct? The throttle position sensor is bad???

 

And is the vent soleniod part of this throttle body? I mean can I just get one and replace that? Oh anmd is this not covered under an emissions warranty? How long is this warranty for?

The truck has 77,000 miles on it but is just over 5 years old so the powertrain warranty has expired but isn't the emissions warranty longer?

 

 

[gmtech4]

call a dealer with the vin and milage and they will run it thru the system and tell you

[EX-F150 owner]

The dealer that it was being serviced at said there is no warranty for either issue... I don't trust this answer. I have read other threads on here of other members having the same throttle body issues and the dealer not covering it. They paid and sent in the invoce to GM for reimbursement. I am just trying to get info supporting if this should be coverend or not so that she doesn't have this expense out of her pocket up front. They want 870.00 to fix the truck!

 

GM knows these throttle bodies are defective imo this shouldn't even be an issue.

[Duelin]

When this problem first started showing up GM was replacing the Throttle Body. Now they are just replacing the TPS Sensor. Did your sister receive a letter from GM informing her about this possible problem and what to do if it should occur. If not print this out and take it to the dealer with the VIN# and see if the truck within special coverage. Just a reminder the dealer won't do anything if you don't have a check engine light.

 

 

 

#11273: Special Coverage Adjustment - Throttle Position Sensor Replacement - (Sep 20, 2012) Subject: 11273 — Special Coverage Adjustment – Throttle Position Sensor Replacement    Models: 2008-2010 Cadillac Escalade, Escalade ESV, Escalade EXT  2008-2009 Chevrolet TrailBlazer  2008-2010 Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe  2009-2010 Chevrolet Colorado  2008-2009 GMC Envoy  2008-2010 GMC Savana, Sierra, Yukon, Yukon XL  2009-2010 GMC Canyon  2008-2009 HUMMER H2  2008-2010 HUMMER H3  2009-2010 HUMMER H3T  Equipped with V8 Engine (LFA, LY2, L20, LMG, LC9, LH6, LMF, LH8, LH9, L76, LS2, LY5, LY6, L92, L96, LZ1, L94, L9H)    --------------------------------------------------------------------------------  Customers involved in this Special Coverage will be notified in phases. The first phase will include customers with 2008 model year vehicles.  Condition  On some 2008-2009 Chevrolet TrailBlazer; GMC Envoy; HUMMER H2; 2008-2010 Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe; GMC Savana, Sierra, Yukon, Yukon XL; HUMMER H3; 2009-2010 Chevrolet Colorado; GMC Canyon; and HUMMER H3T vehicles, equipped with a V8 engine, the throttle position sensor may cause the engine to run rough and cause the malfunction indicator lamp and/or an Engine Reduced Power message to illuminate. If this occurs, it could result in reduced engine power.  Special Coverage Adjustment  This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership.  Dealers are to replace the throttle position sensor and reprogram the Engine Control Module. The repairs will be made at no charge to the customer.  For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after September 21, 2012, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to September 21, 2012, must be submitted to the Service Contract provider.   

[EX-F150 owner]

She does have a SES light lit (codes are P0121 and P0449). The service writer told her that the Throttle Body had to be replaced, that they could not just replace the Throttle Position Sensor.

 

Also, how long is the emissions warranty on a 2008 Silverado? Should the Evap Vent Soleniod part of this?

 

The truck is 2 months out of warranty, time wise but is 22K mile under 100K. Shocked they just didn't take care of this under the campain (throttle body) and emission warranty for the vent soleniod.

[gmtech4]

She does have a SES light lit (codes are P0121 and P0449). The service writer told her that the Throttle Body had to be replaced, that they could not just replace the Throttle Position Sensor.

 

Also, how long is the emissions warranty on a 2008 Silverado? Should the Evap Vent Soleniod part of this?

 

The truck is 2 months out of warranty, time wise but is 22K mile under 100K. Shocked they just didn't take care of this under the campain (throttle body) and emission warranty for the vent soleniod.

 

 

refer to post #2 for warranty question

[EX-F150 owner]

refer to post #2 for warranty question

Thanks Rob, that was helpfull

 

FYI, The evap system is only covered under the 3/36 warranty.

[EX-F150 owner]

I spoke with GM about these issues today. They did say that this truck is covered under the 10Y/120K warranty coverage for the throttle position senor issue. They have opended a case on the truck and have contacted the dealership while I was on hold.

 

They are now waitng to speak with the service manager at this dealershp to see what can be done to fix this issue.

[EX-F150 owner]

Well that did not go over so well.... GM, thank you

 

Funny thing is the dealership that would not warranty this repair said to contact GM Customer Care to see if they will give any assistance on this. I did so on my sister's behalf. Customer Care contacted the dealership and the dealership said they would not warranty this repair under the extended coverage because the code was for P0121 (Throttle posistion sensor) NOT the P2135 (ALSO Throttle Posistion Sensor) that is under this coverage.

 

Customer Care got back with me and denied coverage. Whatever!

 

All I can say from this point is that this truck is only two months out of warranty (way under on the mileage just out because of time) and was purchased at this dealership. GM knows they have a bad part in these trucks and should stand up and fix this issue.

 

The part of all of this that pisses me of the most..... The dealership wanted just over $500.00 to replace the throttle body because of this issue. I pulled the throttle body off the truck cleaned it and the truck now runs great and no more codes!

 

%$#@ you on this one GM!!!