1999 Silverado Z71 5.3L Idle Problems

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Chevrolet Forum >> Chevy Trucks, Vans & SUV's >> Silverado >> 1999 Silverado Z71 5.3L Idle Problems

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1999 Silverado Z71 5.3L Idle Problems - 1/3/2008 7:16:28 PM    krzykjn   Posts: 3 Joined: 1/3/2008 Status: offline My 1999 Silverado is having some idle problems.  Sometimes it will idle at 600RPMs other times it idles at 1200RPMs.  Also when weather is cold, idle goes up and down!!  Any ideas? Post #: 1

RE: 1999 Silverado Z71 5.3L Idle Problems - 1/4/2008 5:42:01 PM    10gunman   Posts: 6 Joined: 12/21/2007 Status: offline check the help please my engine light is on topic u might find some info  (in reply to krzykjn) Post #: 2

RE: 1999 Silverado Z71 5.3L Idle Problems - 1/4/2008 6:55:28 PM    freight shaker   Posts: 19 Joined: 8/4/2006 Status: offline might be the Idle Air Control valve. (in reply to 10gunman) Post #: 3

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