Faulty Climate Control Panel?

2017 CHEVROLET TAHOE

125,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC

TAHOELT

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I am having issues with the controls on my climate control panel. Several of the buttons are not working but a few are. Top and bottom fan, rear defrost, top fan, backseat temperature, and fan controls are not working. I picked up my car from the auto body shop after having the passenger side doors and front fender replaced and now these issues have shown up. Is there a ground wire that could have been bumped while they were working on the passenger side?

Mar 18, 2025 at 9:50 PM

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STRAILER

AUTOMOTIVE REPAIR CONTRIBUTOR
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Yep, you are correct, there are three grounds that need to be looked at which are at the right front A and D pillar. G210 (2), G402 I have marked them in the wiring diagrams below. Let me know what you find. If these are good, I would do a CAN scan because the HVAC controller could have gone out due to a battery boost which body shops are famous for.

https://youtu.be/u-4syLc-ifQ

Here is how to replace the HVAC controller as well just in case.

Images (Click to enlarge)

Mar 19, 2025 at 11:52 AM