Driver side heated seat not working

[Dadnali68]

Hello! So I'm having an issue with just my driver side heated seat. Vehicle is a 2011 Yukon XL Denali. I replaced the pigtail tail and relay under the passenger seat. Still nothing. I can hear the relay click, the lights on the door stay on, but no heat. Shop I took it to found a difference in the ohm readings on the seat fillements. Seat back had 13.1 ohms, seat bottom had 2.6 ohms. Is this an indication of a bad heating element? Where else should I trouble shoot? I hate being cold lol.

 

[petethepug]

Resistance should be similar but not that far off. It’s more than likely a heated mat with a broken contact.

If it’s the p/s seat the cushion is probably in good shape. If it’s the d/s look into replacing the bottom cushion foam while the upholstery is off.

You’ll need to get a diagnosis and an estimate for repair. The kind of estimate to where you don’t pay for labor or parts replaced if the shop doesn’t fix it.

Inexperienced shops may expect you to pay for a misdiagnosis and parts unnecessarily replaced.

There may also be an expectation that you continue to pay for their future recommendations to repair it. Set your expectations before the repairs begin. No repair, no pay.

 

[Dadnali68]

Resistance should be similar but not that far off. It’s more than likely a heated mat with a broken contact.

If it’s the p/s seat the cushion is probably in good shape. If it’s the d/s look into replacing the bottom cushion foam while the upholstery is off.

You’ll need to get a diagnosis and an estimate for repair. The kind of estimate to where you don’t pay for labor or parts replaced if the shop doesn’t fix it.

Inexperienced shops may expect you to pay for a misdiagnosis and parts unnecessarily replaced.

There may also be an expectation that you continue to pay for their future recommendations to repair it. Set your expectations before the repairs begin. No repair, no pay.

That's what I figured. I'm going to park the truck this spring to do some work to it. When I do I'll pull the seat and dig into it myself. I found some good how to videos on YouTube.

 

[Dadnali68]

Resistance should be similar but not that far off. It’s more than likely a heated mat with a broken contact.

If it’s the p/s seat the cushion is probably in good shape. If it’s the d/s look into replacing the bottom cushion foam while the upholstery is off.

You’ll need to get a diagnosis and an estimate for repair. The kind of estimate to where you don’t pay for labor or parts replaced if the shop doesn’t fix it.

Inexperienced shops may expect you to pay for a misdiagnosis and parts unnecessarily replaced.

There may also be an expectation that you continue to pay for their future recommendations to repair it. Set your expectations before the repairs begin. No repair, no pay.

Update on this project. Took the seat out, sent it to a guy to have him do the upper heat pad. Purchased part number 20792749 and thought it was smooth sailing. Guy calls me today and says my seat has no upper heat pad... I'm not really sure how that's possible. What is he missing, what am I missing?

 

[Dadnali68]

Here's what I was sent if anyone knows what's going on here.

 

[mikez71]

Perhaps not the part you need? If you have ventilated seats, they use a different heater than non ventilated.

Possibly this...

https://www.gmpartsdirect.com/oem-parts/gm-ventilation-blower-includes-thermal-electric-device-temperature-sensor-and-filter-15232557

 

[swathdiver]

They break, the solder points break and they quit working. Look it over real good and you might be able to fix it without replacing it.

 

[Dadnali68]

Perhaps not the part you need? If you have ventilated seats, they use a different heater than non ventilated.

Possibly this...

https://www.gmpartsdirect.com/oem-parts/gm-ventilation-blower-includes-thermal-electric-device-temperature-sensor-and-filter-15232557

I was wondering if my truck had the TEDs unit instead of the heat pad. Where is this unit located in the seat so I can check?

 

[mikez71]

.. Where is this unit located in the seat so I can check?

Not sure! I am guessing under the seat.. I would follow the wires.

When I looked at wiring diagrams for a 2011 yukon xl denali, it looks like RPO code KB6 should indicate ventilated seats.

 

[Dadnali68]

Not sure! I am guessing under the seat.. I would follow the wires.

When I looked at wiring diagrams for a 2011 yukon xl denali, it looks like RPO code KB6 should indicate ventilated seats.

I looked in the glove box for the RPO codes and couldn't find them. Are they in a different spot or am I just missing them?

 

[swathdiver]

I looked in the glove box for the RPO codes and couldn't find them. Are they in a different spot or am I just missing them?

Supposed to be glovebox door. If missing, give me your VIN and I'll get the RPO sheet for you.

 

[Dadnali68]

Supposed to be glovebox door. If missing, give me your VIN and I'll get the RPO sheet for you.

I found them. KB6 code.