2003 GMC YUKON ENIGNE POWER REDUCED AND CHECK ENGINE LIGHT.

  • Tiny
  • poundaday
  • 2003 GMC Yukon

Engine Performance problem
2003 GMC Yukon 6 cyl Four Wheel Drive Automatic 184000 miles

my car will be going down the road and all of a sudden it the reduced engine power light come on. I have to pull over sit a minute and crank it back and it will go again. Its now getting worse. It did it 4 times going to work this morning and that is about 20 miles from me. Any suggestions.

Wednesday, October 6th, 2010 AT 10:48 AM

4 Answers

  • Tiny
  • JDL
  • Expert
  • 16,236 posts

First, I'd have the trouble codes checked. Some of the national brand autostores used to check codes for free.

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Wednesday, October 6th, 2010 AT 11:01 AM
  • Tiny
  • poundaday
  • Member

The code that come up is 1516

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Wednesday, October 6th, 2010 AT 11:54 AM
  • Tiny
  • poundaday
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P1516

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Wednesday, October 6th, 2010 AT 11:55 AM
  • Tiny
  • JDL
  • Expert
  • 16,236 posts

That has to do with your throttle control. A perceived difference between the throttle blade angle and the actual angle. I'd try cleaning the throttle bore. There is a throttle position sensor under the throttle pedal, I can't tell you that sensor is faulty? I'd probably have to use a scanner on it, that shows live engine data.

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Wednesday, October 6th, 2010 AT 12:53 PM

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