Rear heat/AC not working properly

2002 CHEVROLET TAHOE

300,000 MILES • 5.3L • V8 • 4WD • AUTOMATIC

BIGINDY

MEMBER
7 POSTS

Very seldom works. If it works (maybe once or twice a year), produces hot and cold air well. Just doesn’t work very often.

Where do I start troubleshooting this?

Jul 15, 2021 at 10:42 PM

SQM

✓Experienced Mechanic
6,383 POSTS

Hello,

Please have a look at this article, it has a lot of good info. Should help you guid to the right direction.

https://www.2carpros.com/questions/2003-chevrolet-tahoe-rear-ac

https://youtu.be/Z2h3ewDYB2o

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

I have also attached complete rear A/C system diagrams.

Please let me know if you have any questions.

Thank you.

Images (Click to enlarge)

Professional Diagram for 2CarPros Members
Click here to log in and view diagram.

Jul 16, 2021 at 1:01 AM

BIGINDY

MEMBER
7 POSTS

Based on this - I’m going to change the rear blower motor.

Thanks guys!

Jul 16, 2021 at 2:41 AM

SQM

✓Experienced Mechanic
6,383 POSTS

You're welcome. Please let me know if you have any questions.
Thank you.

Jul 16, 2021 at 3:13 AM