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Fuel pump replacement

Tiny
HARRISHOUSE
  • MEMBER
  • 2003 CHEVROLET SUBURBAN
  • V8
  • 4WD
  • AUTOMATIC
After replacing fuel pump I am getting no power to pump. I have checked fuses in fuse box and they are good. Initially had some power, but do not now.

I need a wiring diagram and how to test this. Thanks
Monday, April 18th, 2011 AT 10:16 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

You need to check all the relays and the connectors to make sure no corrosion. I have attached complete fuel system diagrams for your reference.

Here are couple of helpful articles:

https://www.2carpros.com/articles/how-to-replace-an-electric-fuel-pump
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

Any questions, please let me know.

Thank you.
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Saturday, July 17th, 2021 AT 5:53 PM

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