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‘01 Silverado 2500HD 8.1/Allison 5sp xcab long bed
4,688 Posts
Fuel pressure. Likely your pump is failing. But check your filter first.

Check pressure, key on, engine off. Should register at least 60psi and hold.

The pressure valve is back by the distributor.

Replace the filter and check again. Wait for a while aster turning the key off before bleeding the pressure off the system.

The filter will be under the driver door on the inside of the frame rail. Use two wrenches on the fitting one to hold the outside and the other to do the turning on the line. Be careful not to round the nut off

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