Fuel Pumps
Chevy Trucks and SUVs
Chevy Venture

What stops power to the fuel pump?

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Wiki User
July 06, 2012 6:45PM

If the ecm doesn't see oil pressure after 2 seconds it will cut off power to the pump

Bad fuel pump relay or blown fuse.

ON SOME CHEVY VEHICLES THE OIL PRESSURE SWITCH HAS A DOUBLE RELAY BUILT INTO IT THAT IF IT IS BAD WILL ALSO FEED THE FUEL PUMP EVEN WITH THE IGNITION OFF

As well if the inertia switch was tripped that will also stop power to the fuel pump.

Would this cause the HVAC #21 fuse in the inside of truck to keep blowing?