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2014 Chevy Silverado
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Old 01-22-2012, 02:58 PM
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Join Date: Dec 2010
Posts: 3
Default Rough Idle At Start Up!

I have a 2002 GMC Sierra 1500 4.8L, When I start it when its cold, it idles very rough hard to keep it running also running rich until it starts to warm up then all is good. no MIL.

Last edited by MDTAHOE; 01-22-2012 at 07:12 PM.
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2002, 2010, 2012, 48l, chevrolet, cold, gmc, idel, idle, rough, sierra, silverado, start, starting, starts

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