2002 GMC Sierra idle

2002 GMC SIERRA
107,000 MILES • V8 • 4WD • AUTOMATIC
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PITTSS
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  • 1 POST
my 2002 sierra will not idle properly when it is cold. I have replace all of the sensors. It also willl not throw a code so that I can diagnose. Any ideas
Sep 27, 2010 at 7:52 PM
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RASMATAZ
  • ✓ASE Certified Mechanic
  • 75,992 POSTS
  • ASE Certified Mechanic
Try cleaning out the idle air control valve and see what happens-
Sep 27, 2010 at 11:54 PM
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