Tahoe throws P1516 code and puts truck into reduced enginge power.

Tiny
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.
Saturday, May 12th, 2012 AT 4:09 AM

3 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Does your PCM have all updates?
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Saturday, May 12th, 2012 AT 4:30 AM
Tiny
FIREMAX
  • MEMBER
  • 2 POSTS
Yes it does.
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Saturday, May 12th, 2012 AT 1:01 PM
Tiny
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.

Roy
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Saturday, May 12th, 2012 AT 5:39 PM

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