Fuel pump

Asked by GuruL96DH Mar 20, 2019 at 12:32 PM about the 1991 Chevrolet Suburban V1500 4WD

Question type: Maintenance & Repair

1991 Suburban quit while driving. No
power to fuel pump. I've got a new fuel
pump and canister, cooling switch, pick
up coil, coil, wires, plugs, cap, button,
throttle position sensor, diaphragm,
injector leads, vacuum hoses,

2 Answers
210

Gordytrblshoots answered 5 years ago

First check your fuses, the relay is under the hood under a plastic cover next to the AC dryer. You should hear it click when you turn the key to the on position. And should show 12 volts at the gray wire. If there's no action at the relay the PCM could be at fault. Also keep in mind the fuel pump power is routed through the oil pressure switch on most models

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