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Heated Seat Module

PFTX_5.3

By PFTX_5.3
in Troubleshooting & Recalls

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silveradosid Senior Enthusiast

silveradosid

Posted
Posted

interesting, the service guy at dealership gave me a print out and said it was under the passenger seat, but i just looked at the wiring schematic and it says the k29 heated seat module is under the front of the driver seat. sorry if i lead you astray

  • Like 2
PFTX_5.3 Enthusiast

PFTX_5.3

Posted
  • Author
Posted (edited)
7 hours ago, silveradosid said:

interesting, the service guy at dealership gave me a print out and said it was under the passenger seat, but i just looked at the wiring schematic and it says the k29 heated seat module is under the front of the driver seat. sorry if i lead you astray

All good, Im only in with my time and a couple of clips LOL. Ill update after I look under the driver seat, I also saw that possibly on some years and trims the heated seat module is built into the seat memory module under the driver seat

 

Update: not under drivers seat either, only thing under drivers seat is GM23135935 which is memory seat module. I'm compley stumped, unless anyone has anymore input it's looking like I no longer have heated seats

Edited by PFTX_5.3
  • 2 months later...
Chbriggs6 New Member

Chbriggs6

Posted
Posted (edited)

Please tell me you have an update on this. Every thread is a dead end and I have 2 seats that are not heating right now. I cannot find anything lol help!

Edited by Chbriggs6
PFTX_5.3 Enthusiast

PFTX_5.3

Posted
  • Author
Posted
18 hours ago, Chbriggs6 said:

Please tell me you have an update on this. Every thread is a dead end and I have 2 seats that are not heating right now. I cannot find anything lol help!

Havent gotten around to it yet, its back up to 60deg lows down here. I will for sure update here when I do it. I do have the instructions from the dealer service manual If you want them. If not I'll update here when I do It.

  • 8 months later...
74Sprint17SierraATX Enthusiast

74Sprint17SierraATX

Posted
Posted

Any luck after replacing that module?
I believe I have the same problem as you did. No heat from any of the 4 elements, yet power/light to the heated seat controls. As far as I know, all of the fuses are good, unless there's another fuse somewhere inline after the controls. 

 

dick reeder New Member

dick reeder

Posted
Posted (edited)

Did anybody ever find out where the heated seat module goes on a 2015 Silverado with heated seats and air condition seats waiting for some kind of response and thank you 

 

Edited by dick reeder
tbarn Senior Enthusiast

tbarn

Posted
Posted

Seat heaters with option KB6 (heated and cooled) are run through the bcm then to each individual blower assembly within the seat. Pass, drivers, upper and lower. 4 blower modules. Each blower assembly controls it's heater element.

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Mikeschulz New Member

Mikeschulz

Posted
Posted
On 1/12/2025 at 4:39 PM, tbarn said:

Seat heaters with option KB6 (heated and cooled) are run through the bcm then to each individual blower assembly within the seat. Pass, drivers, upper and lower. 4 blower modules. Each blower assembly controls it's heater element.

I have a 2014 LTZ Silverado and the cooling and fans work. It is my work daily driver and nobody uses the passenger side seat heater. The driver and passenger side heat quit working but the fans and cooling still work. Does anybody know what module it could be and more specifically where is it exactly? It is not under the passenger seat as others stated.  

rav3 Senior Enthusiast

rav3

Posted
Posted
36 minutes ago, Mikeschulz said:

I have a 2014 LTZ Silverado and the cooling and fans work. It is my work daily driver and nobody uses the passenger side seat heater. The driver and passenger side heat quit working but the fans and cooling still work. Does anybody know what module it could be and more specifically where is it exactly? It is not under the passenger seat as others stated.  

Try searching for this on YouTube. I just checked & there are several videos on the heated seats for GM.

tbarn Senior Enthusiast

tbarn

Posted
Posted

Heated only seats (KA1) have the module under the passenger seat. Heated/cooled (KB6) seats are controlled by each individual blower assembly.

  • Thanks 1
kickass audio Enthusiast

kickass audio

Posted
Posted

try checking for voltage first at the wire that goes to the heating element for the back and bottom cushion. On level 3 (high) it should be around 12V at the 2 wires that go to the seat heater element. I had my 2014 bottom cushion go bad and crack an element because I sit with my wallet in my pocket and it burned out in that area but the seat would once in awhile get just a tiny bit of warmth on the bottom cushion and would be warm for the back rest.

 

My 2024 is so much better and can roast you when it's on high compared to my 2014, even after I replaced the bottom element on my 2014 seat.

 

 

PFTX_5.3 Enthusiast

PFTX_5.3

Posted
  • Author
Posted (edited)
On 1/18/2025 at 2:35 PM, Mikeschulz said:

I have a 2014 LTZ Silverado and the cooling and fans work. It is my work daily driver and nobody uses the passenger side seat heater. The driver and passenger side heat quit working but the fans and cooling still work. Does anybody know what module it could be and more specifically where is it exactly? It is not under the passenger seat as others stated.  

 

From @tbarn:

Heated only seats (KA1) have the module under the passenger seat. Heated/cooled (KB6) seats are controlled by each individual blower assembly.

Edited by PFTX_5.3
PFTX_5.3 Enthusiast

PFTX_5.3

Posted
  • Author
Posted
On 1/18/2025 at 9:54 PM, kickass audio said:

try checking for voltage first at the wire that goes to the heating element for the back and bottom cushion. On level 3 (high) it should be around 12V at the 2 wires that go to the seat heater element. I had my 2014 bottom cushion go bad and crack an element because I sit with my wallet in my pocket and it burned out in that area but the seat would once in awhile get just a tiny bit of warmth on the bottom cushion and would be warm for the back rest.

 

My 2024 is so much better and can roast you when it's on high compared to my 2014, even after I replaced the bottom element on my 2014 seat.

 

 

I almost wonder if the heated seats in my 15 work as intended, but I've gotten so used to the ones in our 24 that it feels like the ones in my 15 arent working.

PFTX_5.3 Enthusiast

PFTX_5.3

Posted
  • Author
Posted
On 1/9/2025 at 10:42 AM, 74Sprint17SierraATX said:

Any luck after replacing that module?
I believe I have the same problem as you did. No heat from any of the 4 elements, yet power/light to the heated seat controls. As far as I know, all of the fuses are good, unless there's another fuse somewhere inline after the controls. 

 

From @tbarn:

Heated only seats (KA1) have the module under the passenger seat. Heated/cooled (KB6) seats are controlled by each individual blower assembly.

 

I did replace my fuses in the drivers side interior fuse box, and that seemed to help a little bit.

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