Question about 2000 GMC Jimmy

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Gmc jimmy heated seat not working on one side only.

Driver's side heated seat not working. Passenger side works and power seats (forward, back, etc..) work on both sides. Checked all fuses and everything is good there, just no heat on driver's side. Thanks!

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  • 38 Answers

Hello-
If your fuses are good, perhaps your heated seat switch is faulty. You can test the switch for connectivity using a meter to see if power is going through the switch when in the ON position. If the meter shows no power while in the ON position, replace the switch. If power is reaching the seat, then likely the heating element itself within the seat is the culprit.

Posted on Apr 02, 2014

  • xkikbxr Apr 11, 2014

    It could also be that if the switch IS good, you may have a shorted or broken wire. Find the wire harness for the heated seat, UNDER the seat, unplug it and test the leads for power at that point. If you do have power to that point then it is the heater element in the seat.

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Posted on Jan 02, 2017

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SOURCE: 1999 GMC Jimmy. Driver's heated seat does not work

i have came across this on one of these before and it was the element that heats the seat had broken ,and ive had one where it was an electrical problem (switch )

Posted on Apr 01, 2009

  • 1 Answer

SOURCE: 2004 GMC Yukon driver side power seat & both

Wher eis the fuse located at ?

Posted on Apr 28, 2010

  • 8 Answers

SOURCE: 2004 GMC Envoy driver's side heated seat quit

I have the same problem except the back of mine works but the bottom doesn't. Passenger side is fine. Let me know what you find out if you could.

Posted on Oct 07, 2011

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Seat heater comes on by itself in 2004 yukon denali


Heated Seat Components
The heated seat system consists of the following components:
• Driver and passenger heated seat switches
• Driver and passenger seat back heater elements
• Driver and passenger seat cushion heater elements
• Driver and passenger seat back temperature sensors
• Driver seat module
• Driver door module
• Passenger door module
When there are modules involved in the operation of any componet that's acting up , the module's electronic's could be the culprit ! But without testing who's to say what the problem could be !
I would have it check for DTC'S
DTC B2425 or B2430
The driver and passenger seat heaters are controlled by the driver seat module. Power is supplied to the driver seat cushion and back heater elements through individual voltage supply circuits. Power is supplied to the passenger seat cushion and back heater elements through a common voltage supply circuit. All of the driver and passenger seat heater elements are grounded by the driver seat module through individual low side drive control circuits. The heater element control circuits are pulse width modulated to ground by the driver seat module in order to control the seat temperatures by regulating the current flow through the heater elements.
DTC B2435 or B2440
The driver seat module relies on inputs from thermistors installed in the driver and passenger seat backs to control heated seat temperatures. The thermistors are 2-wire sensors supplied with a 5-volt referenced signal circuit and low reference circuit from the driver seat module. Resistance through the thermistors varies with temperature causing the heated seat sensor signal circuit voltage levels to decrease as the seat back temperatures rise.
Install a scan tool.
Start the engine.
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? 1:44
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1 Answer

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both my power seats are not working at all ..it first started with driver seat , to make seat move forward and back tilting the recliner was working then it went out ..not working either..then after a month later my pasenger seat stopped working as well... what might be the issue..please reply

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