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No power to the fuel pump

Tiny
SACH38
  • MEMBER
  • 2002 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
Put a new fuel in. No power going to it. I already checked all the fuses and relay.
Wednesday, December 12th, 2007 AT 5:50 PM

3 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
The computer energizes the fuel pump relay for 2 secs. Do you hear the pump for 2 secs when key is at On position. This is the time it should have power-

You have to be at the fuel pump connector when key is at "on" position all you got is to 2 secs. Check it out and comeback with your findings meanwhile familiarize the schematic below.


https://www.2carpros.com/forum/automotive_pictures/12900_oil_sending_unit_and_fuel_pump_circuit_22.gif

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Wednesday, December 12th, 2007 AT 8:06 PM
Tiny
SC02GMC
  • MEMBER
  • 1 POST
Was there ever a finding if so can you post it please I’m in the same situation?
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Wednesday, September 2nd, 2020 AT 8:00 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,709 POSTS
Hi,

I'm not sure if that was resolved. However, I will try to help. Have you checked if there is power to your fuel pump? Is your vehicle the same year make and model as what is listed?

Let me know.
Joe
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Wednesday, September 2nd, 2020 AT 8:19 PM

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