Rear heat/AC not working properly

2002 CHEVROLET TAHOE

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

BIGINDY

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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 16, 2021 at 5:42 AM

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SQM

CERTIFIED EXPERT
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)

Jul 16, 2021 at 8:01 AM

BIGINDY

MEMBER
7 POSTS

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

Thanks guys!

Jul 16, 2021 at 9:41 AM

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SQM

CERTIFIED EXPERT
6,383 POSTS

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

Jul 16, 2021 at 10:13 AM