Mine does the same thing sometimes. I was told it's either the fuel pump, regulator or fuel injectors. I don't know how true that is, but I am already having problems with my fuel guage being accurate, so I am replacing the whole thing including the pump. If that doesn't take care of it I will move on to the next piece of the puzzel. My truck has 80,000 on her, so it can't hurt..... I don't want to remove the tank twice.
1999 GMC Sierra SLE sc sb 4.8l 4L60E, Comp 1.75 roller rockers, graniaelli maf, garneaelli wires, Aem brute force intake, BBK 80mm tb, Nelson tune, 2/4 drop, Denali rims, custom grill, Denalli guages, Edelbrock IAS shocks, Tahoe E-fans, Nelson harness, and tune, McGaughy's 2" drop spindles, New matched coil springs, Air Lift rear lowerd air bag kit, Air Lift wireless remote
List of things to do
4.10 gears and a new posi, Lt headers, Cam, Heads, Intake,
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