I have a 2002 GMC 4.3L sonoma.replaced fuel pump, oil pressure sensor,pump relay switch no fuel pressure.checked fuel pressure reg. spider injector system for leaks no leaks. turn key to on got pressure. put parts back went to test pressure ,0 pressure again. injector body makes funny noise now. could injector body cause 0 pressure problem? should it be replaced?

I have a 2002 GMC 4.3L sonoma.replaced fuel pump, oil pressure sensor,pump relay switch no fuel pressure.checked fuel pressure reg. spider injector system for leaks no leaks. turn key to on got pressure. put parts back went to test pressure ,0 pressure again. injector body makes funny noise now. could injector body cause 0 pressure problem? should it be replaced? 3 Answers

I installed a fuel pump on my 2002 GMC Sonome engine 4 cyl. It started righd not startet up. But, after driven 2 miles, stalled out and died. Since then I could start only after taking out pump out of tank and reinstalled. Oil pressure is more than 40 PSI. I can not find any voltage from terminal.. I put a hotwire (jumper) from 87 terminal to 30 Terminal in fuel pump relay terminal, still no juice. I put a wire from batter to straight to pump . The new pump made noise . Still could not start. In this morning I put a jumper from 87 terminal to pump. I managed the engine running. I could start without jumper about 5 times. While the engine running, I decided to take my truck to road test. Whiel the engine running, I was gathering some tools and equipment for in case of broke down, the engine shut off. Why does my truck do this? I need help, please. 3 Answers

I installed a fuel pump on my 2002 GMC Sonome engine 4 cyl. It started righd not startet up. But, after driven 2 miles, stalled out and died. Since then I could start only after taking out pump out of...

I have a 94' 2.2 GMC Sonoma, I am getting no coolant pressure and not loseing any fluid on outside or inside engine 1 Answer

replaced fuel pump twice, water pump, thermostat, head and gasket, radiator, fuel filter and belt tensioner.and I am not getting any coolant system pressure, help!.

What would cause 92 gmc sonoma 4.3 to knock and oil pressure to fluctuate and drop as it heats up? 1 Answer

Engine started to knock and drop oil pressure. Knock speeds up as You accelerate. The oil pressure starts out fine and then flucuates then drops as it heats up. Cant decide if its a rod a bering a s...

94 GMC Sonoma fuel problem 5 Answers

I have a 94 GMC Sonoma with a 4.3 TBI. When I turn the key on the fuel pump doesn't prime. It is not getting a signal from ECM to relay. There is a test wire under the hood I can hook to the batte...