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Discussion Starter · #1 ·
Hello, I am currently looking for a full wire diaghram for a 2004 trailblazer as I am looking to re-wire the alarm and remote start as it no longer works as well as change some of stock wiring (black out and hooking up the flash to pass to stay on) so if anyone has the full wire diaghram to this truck it would be much appreciated.

Thanks.
 

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2009 chevy
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The remote start is not part of the original, and the alarm may not be either.

The flash to pass, and most of the wiring for all other functions is controlled by the body controller.
You don't rewire these trucks, you need to reprogram the BCM
 

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2004 gmc
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$120 will get you the entire factory shop manual. I would not be a happy camper without mine. Haynes is a poor, distant second place. Alldatadiy.com may have the factory schematics, and be a bit cheaper to subscribe to than a Haynes.
 
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