99 Suburban heated seat

[pikappkaz]

As for the wiring for the upper element, what I found was that the 4 pin plug (ABCD) is just for the lower element and the thermistor. The upper element is fed by a different source, two wires (black and purple) that are covered by a loose black wrap. It can be seen near the back of the seat, I just cut away a small portion of the wrap, and I was able to probe the two wires for continuity. If you find that the back element is bad, you could always cut the two wires and butt-splice them together to complete the circuit for the lower element. You won't have any back heat, but your butt will be nice and warm.

I found that all of the wire splices under the seat foam weren't covered in anything, but I decided to heat-shrink the one's that I did to keep it safe. I don't need any fires at this point.

Also, the burnt spot was underneath the leather, on the foam itself. It wasn't visible before taking the seat apart.

Let me know if you want more instruction on which wires to probe to run a quick test, I can try to snap a photo and maybe I'll write up a quick repair procedure for the site.

-Tom

[jimiv]

Hello, I lucked out with my 99 2500 Burb. My drivers seat was out so I changed out relays and it still didn't work. After digging into it I found that my back side of my seat, the real little wires that connect the element had came off. I resoldered them but my relay still ended up being bad.

My main question is....where can I get this $ 20.00 relay people are talking about ?

The dealer wants around $100.00 (online maybee $80.00) and I've been to three auto stores and they can't get it.

Thanks for the help.............................................. ...................

[chuck's]

This $20.00 relay came from a store called Princess Auto in Canada.A few years back I purchased a couple (GM part #25638146).The Princess Auto part number is 8052288.(six pin relay)You could try on line to see if they still carry this product.[url]www.princessauto.com.Their newest catalogue does not show the product.Let me know how you make out.
chuck's
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[jimiv]

Originally Posted by chuck's

This $20.00 relay came from a store called Princess Auto in Canada.A few years back I purchased a couple (GM part #25638146).The Princess Auto part number is 8052288.(six pin relay)You could try on line to see if they still carry this product.[url]www.princessauto.com.Their newest catalogue does not show the product.Let me know how you make out.
chuck's
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I emailed them and got this back, Thanks for the info anyway, I guess I'll be going to the junkyards.

Good Day Jim,

I have searched for the item you require but can confirm that it has been discontinued and none of our stores have it in stock.
We apologize for this inconvenience and thank you for your inquiry.

Yours truly,
Annette


====================================
Mail Order
Princess Auto Ltd.
Box 1005
Winnipeg, MB R3C 2W7

[BigBear99Tahoe]

Great Thread:

http://cgi.ebay.com/ebaymotors/HEATE...Q5fAccessories

GM 25638146 heated seat module
Just look up under the seat under the foam and find this:


It should click each time you move the heated seat switch from off/low/high

I couldn't find a cheaper one online. Junk yard is next stop...

[paul94]

Very good thread. I appreciate folks taking time to enter what they did. It helped me understand, so I think I will give this a shot this coming Saturday. My driver's side heat is inop. Passenger side works good. After reading about the relay, I did a sound check. In my quiet garage, I simply turned on the ignition and buckled the passenger seat. I hear a definite, muffled click when I move switch from OFF to LOW, but no click when I go from LOW to HI. Btw, this doesn't work if seat belt is not clicked. So I leave it in LOW for a about 1 to 2 minutes and observe my backside is getting warm. Then, when I selected HI, I observed a definite, muffled click and the seat warmed even more. Now over to driver's side that doesn't function. No click when I go from OFF to LOW. I do have a click when I go from LOW to HI...but no heat.
I'm going to pull the seat partially apart this weekend and see if I can incorporate the $0 mod pikappkaz did on 2-2-2008. I'll let you know.