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?

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

4 Answers

  • 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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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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