Heated driver seat, bad switch?

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malmed

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My 'new to me' 2003 Yukon XL denali. My driver seat the heater has an issue... When I first touch the button it may turn on for a split second, but goes out and then will not restart until next time it sits for a while. My gut would say bad heater in the seat, but it happens on both the bottom and back heaters... either switch will light for a second, then not any more. It may stay on long enough to choose low, med, or hi, but then goes out and no amount of button pushing or key on/off will make it come back on.
I intend to replace the wore bottom seat leather, and would replace the heater at that time IF I thought that was the problem, but I am now thinking more that it is a switch problem...
Any clue?
 
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malmed

malmed

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This video explains that if the seat or back or both heaters are bad, the switch will do as I was describing, stay on a very short time and go out.... so likely not the switch, but the heater or heaters. I figure I can ohm test them rather than buy new ones until I am sure what I need.

 

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