GMC YUKON 2003 ROUGH IDLE

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JOEYSIV

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I HAVE A GMC YUKON. IT HAS BEEN IDLING ROUGH IN THE COLD MORNINGS. SOMETIMES I HAVE TO HELP IT BY PRESSING THE GAS A LITTLE BIT TO HELP IT ALONG.

LOOKING FOR POSSIBLE FIXES TO BETTER IMPROVE THE IDLE.

ANY HELP IS APPRECIATED.
 

justirv

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If affected when cold, and more noticeable on cold mornings, shrinking intake manifold gaskets can be the issue. Definitely pursue the suggestions that @rockola1971 made. Consider replacing your knock sensors if pulling the intake.
 

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