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I have a 1999 silverado, 4.3 2wd. the truck runs rough til i get to 2000 rpms. any ideas on what would cause this? thanks


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contributions: 1944
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Location: Oregon
any codes stored in memory? Freeze frame? have you looked for misfires with a scanner? What are your fuel trims? how's your fuel pressure regulator? check it for a leak to vacuum?


   
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