Cannot get starter to engage even with a boost

2007 CHEVROLET TRAILBLAZER
151,000 MILES • 3.2L • 6 CYL • 4WD • AUTOMATIC
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RON GALLANT
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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
Oct 31, 2019 at 4:03 PM
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ASEMASTER6371
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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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Oct 31, 2019 at 4:10 PM
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RON GALLANT
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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!
Oct 31, 2019 at 4:43 PM
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ASEMASTER6371
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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
Oct 31, 2019 at 4:48 PM
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RON GALLANT
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Thanks again. I am sure I did that, but I am going to give it another try tomorrow then I will get back to you !!
Oct 31, 2019 at 5:22 PM
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ASEMASTER6371
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Sounds like a plan.

Roy
Oct 31, 2019 at 5:26 PM