Rick's Free Auto Repair Advice

Dead battery on Chevolet Trailblazer

If you have a dead battery on a Chevrolet Trailblazer, this article is for you.

Boy is this a mess. This vehicle has major league problems with battery drain issues, leaving you with a dead battery on Chevrolet Trailblazer. In most cases, it’s either a stuck “ON” relay or a module that won’t “go to sleep.” Then again, GM has had big problems with ignition switches shorting out and providing power to all accessories as if the key had been left in the RUN position.

Here are the possibilities mechanics are finding:

Liftgate module won’t go to sleep
Door lock module won’t go to sleep
Power seat switch shorted
Wiper motor won’t park due to bent arm
Secondary air pump relay stuck ON
Body control module won’t go to sleep

Ignition switch shorted to RUN position.

To diagnose the problem, follow the procedure shown here.


© 2012 Rick Muscoplat

Posted on by Rick Muscoplat

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