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Re: 1991 gmc 5.7 surging while driving
ok...so best to do a scan then....is there somewhere on here that tells how to bring up codes? Can i bring up codes on this 1991 truck with the key or do I need a storebought scanner? The truck actually accellerates fine ...the surging is worst when i am at cruising speed with no accelleration or no let off. thanks
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