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2008 Trailblazer No Crank or Start

Primetimeups
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3 years 5 months ago - 3 years 4 months ago #57603 by Primetimeups

2008 Trailblazer No Crank or Start was created by Primetimeups

Hi, I have a no crank no start on a 08 Trailblazer. It will start jumping at the relay (87 to 30) but then shuts back off with the key on in run. But I found that the pink wire(Coming from the ignition switch) has constant voltage to it, low voltage but then when I crank the vehicle it gets very bright (PINK WIRE) but it never sends power or ground to 85 to start and the instrument cluster stays on like you left the key on then have I have to disconnect battery then its fine until you try to crank it again or just turn the key on. Thanks

Last edit: 3 years 4 months ago by Primetimeups. Reason: Forgot specific area I'm referring to.

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ScannerDanner
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Religion says do, Jesus says done!

3 years 4 months ago #57719 by ScannerDanner

Replied by ScannerDanner on topic 2008 Trailblazer No Crank or Start

Step 1 is to do a full system scan on all modules. If the cluster is staying lit up with they key off, you'd think you'd have some trouble codes to give you direction

Don't be a parts changer!

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Primetimeups
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3 years 4 months ago #57752 by Primetimeups

Replied by Primetimeups on topic 2008 Trailblazer No Crank or Start

I should also mention it won't communicate with my hand held scanner either I thought because of this Pink wire having current in it. Thanks.

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Chad
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I am not a parts changer.

3 years 4 months ago #57764 by Chad

Replied by Chad on topic 2008 Trailblazer No Crank or Start

Here is a starting circuit diagram.

What does the security light do, when you try to start?

"Knowledge is a weapon. Arm yourself, well, before going to do battle."
"Understanding a question is half an answer."
I have learned more by being wrong, than I have by being right. :-)

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