Rear hvac blower motor?

2002 CHEVROLET SUBURBAN
270,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC
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BUBBANATOR1
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.
Aug 6, 2025 at 4:53 PM
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STRAILER
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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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Aug 7, 2025 at 7:19 PM
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BUBBANATOR1
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The front HVAC controller is brand new.
Aug 9, 2025 at 11:49 AM
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STRAILER
  • ✓ASE Certified Mechanic
  • 54,494 POSTS
  • ASE Certified Mechanic
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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Professional Diagram for 2CarPros Members
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Professional Diagram for 2CarPros Members
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Aug 10, 2025 at 9:04 AM
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