New Throttle Body but the Same Results??

[TRAY858]

I have an 07' Denali. It was diagnosed by the dealer and they said it had a defective throttle body. I removed and cleaned the throttle body and it cleared the check engine light. But then my idle began to rev high and low. This caused my truck to shift high and low. I replaced the throttle body through Rock Auto and then installed it and I got the same results. Is this a dealer reprogramming issue or should this be adjusted through the dealer? Does anyone have any ideas or advice on the next steps? Also what's the proper procedure in replacing a from impact air bag sensor on the passenger side? Thanks fellow GMC-ers. 6.2 Rocks!

 

[Ben]

clean your MAF sensor with MAF cleaner. New air filter and make sure all the intake pipes are actually connected starting from the air box to the throttle body. On these trucks if there is no air flow over the MAF they get very picky....

 

[harveje]

May have to do a relearn, but dealer should have done that. I've heard anytime the TPS in unhooked and the butterfly is manually moved it messes up the computer and need to relearn position.

 

[Marcustomer]

I have an 07' Denali. It was diagnosed by the dealer and they said it had a defective throttle body. I removed and cleaned the throttle body and it cleared the check engine light. But then my idle began to rev high and low. This caused my truck to shift high and low. I replaced the throttle body through Rock Auto and then installed it and I got the same results. Is this a dealer reprogramming issue or should this be adjusted through the dealer? Does anyone have any ideas or advice on the next steps? Also what's the proper procedure in replacing a from impact air bag sensor on the passenger side? Thanks fellow GMC-ers. 6.2 Rocks!

Yes it requires recoding with dealer software.

 

[Marcustomer]

I have an 07' Denali. It was diagnosed by the dealer and they said it had a defective throttle body. I removed and cleaned the throttle body and it cleared the check engine light. But then my idle began to rev high and low. This caused my truck to shift high and low. I replaced the throttle body through Rock Auto and then installed it and I got the same results. Is this a dealer reprogramming issue or should this be adjusted through the dealer? Does anyone have any ideas or advice on the next steps? Also what's the proper procedure in replacing a from impact air bag sensor on the passenger side? Thanks fellow GMC-ers. 6.2 Rocks!

Yes it requires recoding with dealer software.

 

[HiHoeSilver]

Yes it requires recoding with dealer software.

Hopefully he sorted it out as it was about 5 years ago. Lol

 

[Rocket Man]

Hopefully he sorted it out as it was about 5 years ago. Lol

Newbies lol.