Question about 2005 GMC Yukon Denali

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2005 GMC Yukon Denali drivers seat turns on and off by itself

The drivers seat heater turns on and off by itself

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The common cause is the control is defective.

Posted on May 14, 2016

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1 Answer

Denali seat heater on driver's side come on upon start up. After shutting down it immediately restarts. Cannot seem to keep it off.


Bad switch or control module. You could try swapping left and right switches if the connector fits, to help determine the problem. If the other switch stays off, get a new switch. If it acts the same, get a control module.

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There is a cable that connects the handle to the latch, the cables like to break/stretch, sometimes if you look close at the rear of the seat where it attaches to the floor you can see the latch and manually release it with a long screw driver or similar tool.
Cables are avaiable from GM dealer if thats the problem.

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Make sure to check out the power fuse with the multimeter and check the switch. Most probably its due to burning of seat heater wiring.

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1 Answer

Our Driver Seat Heaters and passenger seat will turn on for 2 sec


When this was happening on my Envoy it ended up being the seat heaters control module that was going out. About $600 a seat on mine. Just wish my repair center found that out before they replaced the seat heaters twice.

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1 Answer

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Apr 13, 2009 | 2001 GMC Yukon Denali

1 Answer

02 GMC Denali front heated seats won't work


The controller could be bad but I would probe the related wiring first. From your symptoms it sounds like something can not handle the electrical load. You turn the F/R seat heater on but then you turn on the F/L and the whole system fails. It does sound like the source of the problem will be under the drivers seat. Testing needs to be performed to confirm and identify the source. Both seats share the same fuse and ground. This circuit may have a damaged wire or connector somewhere. Inspect and test as much as you can. Also look underneath the seats for anything. Customers are not aware that personal belongings and trash get pushed underneath the seats and will damage wiring. Also excessively moving the seat forward and back will weaken the harness over time. Please write back and let me know what you need. If it is more diagnostic information or suggestions just let me know. Good Luck

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1 Answer

02 GMC Denali front heated seats won't work


test to see if you have any power going through all the connectors for the seat heater, there may be a spot where there is a connector that has gone bad, or potentially it could be the whole element that is bad

Mar 05, 2009 | 2001 GMC Yukon Denali

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