Faulty Climate Control Panel?

Tiny
TAHOELT
  • MEMBER
  • 2017 CHEVROLET TAHOE
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 125,000 MILES
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?
Tuesday, March 18th, 2025 AT 9:50 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,023 POSTS
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.
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Wednesday, March 19th, 2025 AT 11:52 AM

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