Question about 1994 GMC Sierra

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I have a 98 gmc half ton exstended cab truck the engine light came on. when i accelarated the truck shakes and idle bad. but runs fine at norman driving

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I hade the same problem...the catylatic conveter had melted inside which was causing the problem...u can get a universal one from any muffler shop....

Posted on Nov 16, 2009

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Go to a local part store that will let you use their code reader hook it up (OBD II access plug is generally located under dash) and read the code to determine what sensor or engine component is malfuctioning.

Posted on Jul 02, 2009

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