WHAT MAKES THE REDUCED ENGINE POWER LIGHT TO COME ON?

  • Tiny
  • Tajuana
  • 2004 GMC YUKON
  • 11,500 MILES

First the reduced engine power light a come and then the stability stystem disable light a come, then we cant give the car no acceleration, cut the car off for a few minutes, and the can drive it again?

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Friday, November 18th, 2011 AT 7:49 PM

4 Replies

  • Tiny
  • Fixitmr
  • MEMBER

First get codes read to help with diagnosis.

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Friday, November 18th, 2011 AT 8:06 PM
  • Tiny
  • Fixitmr
  • MEMBER

The reduced power means you are in PCM limp mode.

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+1
Friday, November 18th, 2011 AT 8:07 PM
  • Tiny
  • Fixitmr
  • MEMBER

Most common cause is wiring at throttle sensor.

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Friday, November 18th, 2011 AT 8:10 PM
  • Tiny
  • Fixitmr
  • MEMBER

Another common cause is dirty/gummed up throttle plate.

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Friday, November 18th, 2011 AT 8:16 PM

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