Quote:
Originally Posted by fastfredracing
I had a 2004 trailblazer come in with no 4wd. I traced it down to the control module, and decided to have a go at it. The reflash was easy peasy, it was all the setup that was the killer. I was thrilled to see the switch light up, and all functions normal again.
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OK, maybe I'm stupid, but let me get this straight - the ECM can prevent the vehicle from going into 4WD? That's...nuts.