HVAC Wiring diagram needed?

2012 CHEVROLET TAHOE

250,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC

BUZZER67

MEMBER
1 POST

Diagnosing no front HVAC blower motor. I am looking for HVAC wiring diagram for the vehicle listed above. The control voltage wire, is it fused? Getting voltage to blower motor control module. no voltage out to motor. Module is new. Motor is new.

Sep 4, 2023 at 11:56 AM

STRAILER

✓Experienced Mechanic
55,583 POSTS

It sounds like you have a bad ground G200 right in front of the HVAC case. Here is a guide that can help, and I have included the HVAC wiring diagrams so you can see how the system works and which wires to test.

https://www.2carpros.com/articles/how-to-use-a-test-light-circuit-tester

or

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

Check out the images (below). Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.

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