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02 Trailblazer LTZ wacky digital climate control


SsHaDyGt
09-21-2015, 09:50 PM
Hi Guys,

I just picked up an 02 Trailblazer to drive during the winter while my GTO hibernates.

There is a strange issue with the digital climate control. It turns itself on to either the AC or heat and the temp starts going up or down by itself, if I turn the hvac off, it comes back on by itself.

I tried searching but could not find anything similar. I'm wondering if there is any way to troubleshoot before just replacing the HVAC control unit.

Thanks,

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