Cannot get starter to engage even with a boost

RON GALLANT

MEMBER
2007 CHEVROLET TRAILBLAZER
3.2L
6 CYL
4WD
AUTOMATIC
151,000 MILES

I am looking for the wiring diagrams for the start circuit from switch to starter and also diagram for fuse boxes. All I have so far is the relay is clicking when key is turned. Thanks

Thursday, October 31st, 2019 AT 4:03 PM

5 Replies

ASEMASTER6371

MECHANIC
52,797 POSTS

Good evening,

I attached a wiring diagram for you to view. It includes the fuses and their locations for you to check. The crank fuse needs to be checked in the start position.

The ECM is what controls the ground for the starter relay.

Roy

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Thursday, October 31st, 2019 AT 4:10 PM

RON GALLANT

MEMBER
3 POSTS

Thank you. I have checked the crank fuse and it is showing power when switch is turned to start. I am stuck at wondering if it is the switch or the starter/solenoid because I am getting power across the crank fuse. I am confused with it for sure!

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Thursday, October 31st, 2019 AT 4:43 PM

ASEMASTER6371

MECHANIC
52,797 POSTS

If you have power at the crank fuse, the switch and wiring are good to the fuse.

Check it at the relay now. Remove the relay and check for 2 powers with the key in the start position.

Roy

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Thursday, October 31st, 2019 AT 4:48 PM

RON GALLANT