Seat heater malfunction?

2015 GMC YUKON
154,000 MILES • 6.2L • V8 • 4WD • AUTOMATIC
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BELLAROSA2010
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Have a 2015 Denali, first the passenger side seat stopped working, then the driver side was soon to follow. The backs of both still work along with the AC feature. Ideas on what/how to trouble shoot?
Feb 26, 2026 at 11:24 PM
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STRAILER
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Yep, I have seen this problem before and if the fuses are good the seat heater control module under the passengers seat goes bad, or there is corrosion at the electrical connector for the module. Here are the fuses and the exact location of the module, you should also do a CAN scan for codes which can help us troubleshoot the problem.

CAN SCAN - https://youtu.be/u-4syLc-ifQ

This video can help you check the fuses.

https://www.youtube.com/watch?v=G-xNK79Wa-w

Looks for melted connections at the module as well. Check out the images (below). Please upload an image or a short video in your response, so I can see what's going on. Ken

Images (Click to enlarge)
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Feb 27, 2026 at 8:32 AM
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BELLAROSA2010
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Thank you, I will work on this and get back to you.
Mar 1, 2026 at 2:11 AM
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STRAILER
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You are welcome, have a good week! Ken
Mar 1, 2026 at 11:08 AM