Switched ignition switch with out aligning it first

Asked by Jorge Dec 26, 2017 at 01:24 PM about the 2004 Chevrolet Trailblazer LS 4WD

Question type: Maintenance & Repair

I changed my ignition switch on my 200r chevy
trailblazer and didnt align it and started my truck
and now when i put my heater on defrost my truck
shuts off

1 Answer
11,245

FJ4072 answered 6 years ago

Hello there, easy fix and cheap, you probably have the I6 engine. While changing the ignition switch, you unhooked the battery right? Try turning on the AC, same problem right? This is what caused your problem, the battery disconnection. Disconnect fuses #10 and #28 under the hood, remove the throttle body, clean it with a sensor safe spray like Seafoam with nylon brush and or a rag only. Yes you can re-use the little hard plastic O-ring, many times over. This will solve your problem, it is a pretty common issue for our platform.

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