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1999 Chevy Silverado idle

Tiny
NORFLEED
  • MEMBER
  • 1999 CHEVROLET SILVERADO
  • V8
  • 4WD
  • AUTOMATIC
  • 144,000 MILES
When my truck is idling, it fluctuates or revs like it is going to stall any minute. I was thinking the idle may just need to be adjusted. Is that possible and if so how do I do it?
Tuesday, August 31st, 2010 AT 2:51 PM

5 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
The PCM controls the idle via the idle air control valve, throttle position sensor. It isn't adjustable.
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Wednesday, September 1st, 2010 AT 10:12 AM
Tiny
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  • 3 POSTS
Thanks for the response, but, what do you do about it? Anything?
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Wednesday, September 1st, 2010 AT 10:52 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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The only thing that can be done is replacement of the bad part.
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Thursday, September 2nd, 2010 AT 7:18 AM
Tiny
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Thank you
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Thursday, September 2nd, 2010 AT 9:15 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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You're welcome. I wish I had a better answer, but that is it.
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Thursday, September 2nd, 2010 AT 10:01 AM

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