Question about 2007 GMC Sierra 1500

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How do I adjust the high idle on a GMC Sierra Ext. Cab 4.8

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Idle screw on throttle where the cable meets the linkage

Posted on Jun 05, 2010

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CANT ADJUST IDLE SPEED ITS CONTROLED BY THE PCM.IF YOU HAVE PROBLEMS WITH IDLE SPEED TAKE IT TO DEALERSHIP.THEY HAVE TO USE A TECH 2 SCANNER TO CHECK OUT IDLING PROBLEMS.

Posted on Jun 05, 2010

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What is the engine size on a 1991 gmc sierra 2500 4x4


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