Tahoe throws P1516 code and puts truck into reduced enginge power.
FIREMAX
MEMBER
2003 CHEVROLET TAHOE
300,000 MILES
I have replaced the app sensor. I have replaced the tac. I have cleaned and replaced all grounds on the engine. I have thoroughly checked all wires and connections on the app and tac. Cleaned and tightened all battery connections. Dont know where to turn or what to try next.
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Saturday, May 12th, 2012 AT 4:09 AM
3 Replies
FIXITMR
MECHANIC
9,990 POSTS
Does your PCM have all updates?
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Saturday, May 12th, 2012 AT 4:30 AM
FIREMAX
MEMBER
2 POSTS
Yes it does.
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Saturday, May 12th, 2012 AT 1:01 PM
ASEMASTER6371
MECHANIC
52,797 POSTS
Did you use dealer new parts? Did you replace them together? If you did the pedal first and had a shorted throttle body and then replaced that, it may have burned out the pedal sensor/module.