fuel pump replacement

2003 CHEVROLET SUBURBAN

V8 • 4WD • AUTOMATIC

HARRISHOUSE

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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

Apr 18, 2011 at 10:16 PM

SQM

CERTIFIED EXPERT
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.

Images (Click to enlarge)

Jul 17, 2021 at 5:53 PM