Seat heater malfunction?

Tiny
BELLAROSA2010
  • MEMBER
  • 2015 GMC YUKON
  • 6.2L
  • V8
  • 4WD
  • AUTOMATIC
  • 154,000 MILES
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?
Thursday, February 26th, 2026 AT 11:24 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 54,942 POSTS
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 make bigger)
Thumb
Thumb
Was this
answer
helpful?
Yes
No
+1
Friday, February 27th, 2026 AT 8:32 AM

Please login or register to post a reply.

Related Seat Heater Not Working Content

VIEW MORE