Not getting power to fuel pump

PAULUZA33

MEMBER
2003 CHEVROLET TRAILBLAZER
4 CYL
4WD
AUTOMATIC
100,000 MILES

I just bought the vehicle listed above that is not getting power to fuel pump. I opened up the fuse panel and discovered the previous owner had taken relays out. I do not know which direction they go or which relay goes where and the fuse diagram doesn't show type or direction of relay.

1 Reply

JACOBANDNICKOLAS

MECHANIC
109,885 POSTS

Hi and thanks for using 2CarPros.

First, I have attached a picture of the under hood fuse and relay box. In addition, I attached the legends of what each fuse and relay and fuse is for. If you look at picture 1, it shows #41 as the fuel pump relay.

Now, there is a fuse box in the rear of the vehicle also. However, it differs based on if the vehicle is a short wheel base or long. Pictures 7, 8, 9, 10 are for the short wheel base.

The long wheel base rear fuse compartment are the remaining pictures.

Here are a couple links that may be helpful:

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

Let me know if this helps.

Joe

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