Two common problems come to mind on Chevy trucks. When the fuel pump needs
replaced we use only GM pumps and always put in a new fuel regulator with
it. We found not replacing the regulator can sometimes ruin the new pump.
We also run into late model Chevy trucks that run rough when cold and okay
when warm. That is normally the intake manifold gaskets leaking. Those are
expensive to buy and take a few hours labor time.
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