Question about 1997 GMC Sonoma
Check the ground for the fuel pump. a wire with an eye connector is bolted to the left frame rail towards the back of the truck. You have to lay on your back and slide under the truck to see it. Let me know if this solves your problem. or just run a new ground wire to the pump.
Posted on Aug 31, 2010
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Posted on Jan 02, 2017
It really helps if you post which engine you have and the 8th VIN digit. I ASSUME its a V6??? You should have 12 volts for 2 seconds on the gray wire (at the pump) when you turn the key on, If not, check the ECM/BATT fuse #9 20 amps, in the dash fuse panel. IF you do have power, then the relay is working and that is ok, If it does have power to the gray wire, then shuts off after 2 seconds thats normal. NOW while its running the fuel pump gets power THROUGH the OIL PRESSURE SWITCH. So get it running with your test wire, then disconnect your test wire. If it stalls out, then the oil pressure switch is either bad or disconnected.
Posted on Aug 30, 2010
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