Mechanics

THROWS P1516 CODE AND PUTS TRUCK INTO REDUCED ENGINGE POWER.

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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Firemax
May 12, 2012.




Does your PCM have all updates?
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Tiny
Fixitmr
May 12, 2012.
Yes it does.

Tiny
Firemax
May 12, 2012.
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.

Roy

ASEMaster6371
May 12, 2012.

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