Heated Drivers Seat Issue

[Elwood 2000]

A good friend of mine has a 2003 GMC 1500 SLT.

 

The drivers heated seat comes on and changes settings at will. This problem only happens when it is damp or wet out. If it rains overnight but is dry in the morning, after about 5 miles down the road, it will eventually turn itself off and work properly. If it is rainy, snowy or foggy, the drivers heated seat will come on, off, and change settings constantly. When it is dry outside, the seat functions properly.

 

The truck has been to two different dealers with no real suggestions other than to start replacing parts to see which one may have failed. Each dealer sprayed the outside of the drivers door as well as under the hood towards the wiring harnesses and the problem never happens for them. The fuse has been pulled and the seat still acts the same. They have plugged the truck in and there are no codes showing either.

 

Anyone have this problem and have any solutions or does the truck have a ghost??

 

Thanks!

[Elwood 2000]

Fry.........Fry...........Fry............Anyone?????????

[FergieDSP]

Mine does this in the same situations you mentioned. I do not know a fix for it, but the next time I get an oil change then I will ask them to take a look at it. My horn also does not work sometimes also. If I find out anything from the dealer I will let you know.

[jrrod2004]

Here is some info that 'may' help:

 

Document ID# 1469580

2003 GMC Truck GMC C Sierra - 2WD

 

 

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Subject: Driver or Passenger Heated Seats Turn On By Themselves - kw GMT800 GMT805 GMT820 GMT830 seat unwanted heat right left front switch operation #PI01850 - (03/08/2004)

 

 

 

Models: .

 

 

 

 

--------------------------------------------------------------------------------

 

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

 

Condition/Concern:

A customer may comment that the front passenger or drivers heated seats turn on by themselves. Dealer technicians my not be able to duplicate the concern and no DTCs will be set. This concern maybe caused by the customer inadvertently contacting the heated seat switch.

 

Recommendation/Instructions:

To correct this concern, a new low profile switch has been released. The new part number switches are as follows:

 

15116861 passenger

 

15116862 drivers w/ memory, heated, and adjusted pedals

 

15116863 drivers w/ memory and heated only

 

.

 

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

 

Models:

(03 and 04 Chevrolet Silverado) and (03 and 04 Chevrolet Avalanche) and (03 and 04 Chevrolet Tahoe, Suburban) and (03 and 04 GMC Sierra, Sierra Denali) and (03 and 04 GMC Yukon, Yukon XL, Denali, Denali XL) and (03 and 04 Cadillac Escalade, EXT, ESV)

 

.

 

 

 

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

 

 

© Copyright General Motors Corporation. All Rights Reserved.

 

 

--------------------------------------------------------------------------------

Document ID# 1469580

2003 GMC Truck GMC C Sierra - 2WD

 

 

 

 

 

and possibly switch closing circuit when moisture is in air?

[xtech]

The same thing happened to me today. Here in Eastern NC we had major storms come through last night, with the wind and rain blowing at the drivers side of the truck. Today when I left the house, the seat heater on the drivers side started coming on by itself, cycling through all settings. I would punch the buttons to turn it off, but 5 or 10 seconds later it would come on again. The truck was parked in the bright sun during lunch, and on the way home it never did it again. Gotta be a moisture issue. I just wonder if the new style switch will fix it?

[FergieDSP]

Let me know if your dealer replaces your switches and that fixes the problem. Mine has been doing it for awhile now off and on and my dealership has no idea.

 

The same thing happened to me today. Here in Eastern NC we had major storms come through last night, with the wind and rain blowing at the drivers side of the truck. Today when I left the house, the seat heater on the drivers side started coming on by itself, cycling through all settings. I would punch the buttons to turn it off, but 5 or 10 seconds later it would come on again. The truck was parked in the bright sun during lunch, and on the way home it never did it again. Gotta be a moisture issue. I just wonder if the new style switch will fix it?

[lostnfound]

Im no help but I hope someone here does.

[xtech]

Here is some info that 'may' help:

 

Document ID# 1469580

2003 GMC Truck GMC C Sierra - 2WD

 

 

--------------------------------------------------------------------------------

 

 

Subject: Driver or Passenger Heated Seats Turn On By Themselves - kw GMT800 GMT805 GMT820 GMT830 seat unwanted heat right left front switch operation #PI01850 - (03/08/2004)

 

 

 

Models: .

 

 

 

 

--------------------------------------------------------------------------------

 

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

 

Condition/Concern:

A customer may comment that the front passenger or drivers heated seats turn on by themselves. Dealer technicians my not be able to duplicate the concern and no DTCs will be set. This concern maybe caused by the customer inadvertently contacting the heated seat switch.

 

Recommendation/Instructions:

To correct this concern, a new low profile switch has been released. The new part number switches are as follows:

 

15116861 passenger

 

15116862 drivers w/ memory, heated, and adjusted pedals

 

15116863 drivers w/ memory and heated only

 

.

 

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.

 

Models:

(03 and 04 Chevrolet Silverado) and (03 and 04 Chevrolet Avalanche) and (03 and 04 Chevrolet Tahoe, Suburban) and (03 and 04 GMC Sierra, Sierra Denali) and (03 and 04 GMC Yukon, Yukon XL, Denali, Denali XL) and (03 and 04 Cadillac Escalade, EXT, ESV)

 

.

 

 

 

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

 

 

© Copyright General Motors Corporation. All Rights Reserved.

 

 

--------------------------------------------------------------------------------

Document ID# 1469580

2003 GMC Truck GMC C Sierra - 2WD

 

 

 

 

 

and possibly switch closing circuit when moisture is in air?

 

 

Thanks, Mike. I wonder if the switch that was developed for the 2004 problem is the same switch that comes standard in the 2006 model Silverado, or do I need to have the dealer order this "new" switch???