Question about 2003 GMC Yukon

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The heated seats are not working on a 2003 GMC Yukon, the control on the door and on the seat does nothing. The fuse is not blown. Any ideas?

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What you are sitting on is an expensive toaster. sit on your toaster every day all day long, leave it out in the heat and cold and see how long it lasts. either the elements have burned through, or the built-in circuit breaker is dead. any other seat that old will be the same way. ask a GMC service manager what other year seats will bolt in and go buy the latest model used one you can find. then buy seat covers to make them all match. failing that pay for a New Old Stock one, it will no doubt be pricey. The car is worth exactly the same with or without a heated seat.

Posted on Mar 23, 2011

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If the seats are turning on all by themselves, then you probably have a defective control switch, or a problem with the driver's door module or the memory seat module. Pulling fuses will not "FIX" anything.
If you are going to do that, you must pull the 30 Amp seat circuit breaker (not a fuse). This will disable your ENTIRE seating system including all of your seat adjustment capabilities.
The problem with this type of "remedy" is that all these things are controlled by the Body Control Module (BCM) and by the Powertrain Control Module (PCM) (via class 2 communications) and these modules will set fault codes if this is done.
This MAY not sound like a problem now, but it can cause confusion and cost you a lot more money due to extended diagnostic time when you have a problem that you WANT fixed. This can cause a technician to have to spend time chasing down one circuit trying to find out what is wrong with another circuit, etc..
I highly recommend that you have your seats properly diagnosed and repaired. Not only so that your seats will work, but also so that it does not create secondary problems leading to unnecessary expense.
However, this is only the opinion of a Certified Master Automobile Repair Technician...take how you wish.

Nov 05, 2011 | 2003 GMC Yukon

1 Answer

2004 yukon seats are not working/heated seats not working


Check the fuses, the owners manual should be able to help you there.

Jan 23, 2010 | 2004 GMC Yukon

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Front driver seat only moves apx. 2" back from the front of the track. Fuses are good. Back of seat controls work. The pre sets do not move the seat back.


Make sure there is nothing obstructing the seat from under the seat track.Sometimes things fall down there and will jam the seat track.Move the seat up all the way and look it over real good under the seat.Hope this helps.

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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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My Driver side seat does not move


at temperatures such as yu mentioned the car will almost certainly suffer some sort of electrical problems as microchips which controll all your electricals are prone to breaking and loosing functionality. it could be either. if you can take motor off or access the main wires at the back of it and try direct connection to the battery and see if it responds. if not then it will definitley be a fuse.

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I had the same problem in my wife's 2003 Yukon Denali. The power seats and passengers side window wouldn't work. Turned out to be a blown Buss Type fuse in the Underhood Fuse Block. It is the one marked MBEC 1 50amp. Hard to tell if the are blown so look very carefully. Should look like a hoop with two shiny solderlooking bubbles on either side. On my blown fuse, it caught my attention because it looked like the solder was missing and I had to look very closely to see the bottom of the "hoop" was open. They are very hard to remove and must be pulled straight up.
This type of fuse looks like a red square with a clear plastic top showing the fuse link under the plastic. On my vehicle it is on the top row second one from the left.

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