Rear HVAC blower motor?

Tiny
BUBBANATOR1
  • MEMBER
  • 2002 CHEVROLET SUBURBAN
  • 5.3L
  • V8
  • 4WD
  • AUTOMATIC
  • 270,000 MILES
My rear hvac only allows me to work the blower motor from the rear overhead console, the front overhead console does not work. I can not change the rear temp, or location as to where it blows out. Any help would be great. All fuses are good.
Wednesday, August 6th, 2025 AT 4:53 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
The front HVAC controls work through the rear controller, so chances are the front HVAC controller needs to be replaced. Here is how, it looks like it just pops out. Check out the images (below).
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Thursday, August 7th, 2025 AT 7:19 PM
Tiny
BUBBANATOR1
  • MEMBER
  • 2 POSTS
The front HVAC controller is brand new.
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Saturday, August 9th, 2025 AT 11:49 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,137 POSTS
Good information. I would check the ground to the front HVAC controller, here is a guide to help and the wiring diagrams as well.

https://www.2carpros.com/articles/how-to-check-wiring

I would check the other wires as well and if they good I would replace HVAC control processor the Check out the images (below). Let us know how it goes.
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Sunday, August 10th, 2025 AT 9:04 AM

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