Question about 2000 Cadillac DeVille

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Seat heater repair 2000 cadillac sedan deville

The seat heater on the driver's seat stopped working. It's not unplugged. Any ideas of the problem and the solution?

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  • polishcad Dec 08, 2008

    I have a 2000 deville that the drivers seat heater dont work on the seat or back. I bought a chillons manual and it does not say a thing about the problem or how to fix it. I called GM and they say see your dealer, i call the dealer and they say bring the car in so we can look at it. I need to get my hand on a chematic so that i can check to see what the problem is and how to fix it.


  • koerberma Dec 30, 2008

    I have the same problem, for the second time. The 1st time it was under warranty...I let them deal with it. This time its on my nickel. I took the car in and they said they needed to replace both heating units (cost about $500). I can't believe this is the problem for the second time. I can't imagine both modules failing simultaneous on two different occasions.

    Any thoughts?

    PS: This is a 2005 Deville DHS



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This is not really a solution, but a debunking of the CTS owner's solution. The Deville has it's seat heater fuses for left and right seats as well as a fuse for the control switches in the trunk. Remove the 4 plastic nuts under the lining near the rear window and check those fuses. There is also a maxifuse for many components under the hood under the tiny fuse box near the drive side wheel well. You have to pull hard on the black plastic to pop this shield off. If it's not the fuses, you might have a problem with the heater elements themselves. Both of mine broke after 10 years of use (fuses were fine)

Posted on Jan 17, 2010

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I have a 2004 CTS. I know there are two fuse boxes underneath the floor carpeting in front of the rear seat. Remove the rear seat bottom cushion and pull the carpet forward and you will see them. Inside the cover identifies what fuse is for what function. Hopefully it is a blown fuse, otherwise my guess would be a short in the wiring some where.

Posted on Jan 17, 2009


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