Gmx sonoma fuel problem

Asked by May 21, 2016 at 12:27 AM about the 1994 GMC Sonoma 2 Dr SLS Standard Cab SB

Question type: Maintenance & Repair

I have a 94 GMC Sonoma with a 4.3 TBI I am
getting no power at fuel pump but I can use the
fuel pump test wire to start it and then unplug the
wire and it will keep running I have changed the
pump, the pump relay. Checked the fuses, and the
oil pressure switch.

2 Answers

10,645

Check the fuel pump Relay under the hood (on firewall) before getting to the fuel pump circuit wiring.

The fuel pump relay is under the radio in the dash. There are 3 relays on the fire wall but in my book it says there something else

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