1999 Heated Seats don't work

[BigB69]

Just bought a pre-owned 1999 Suburban. Nice Price, Nice ride, but a couple of things don't work. The heated seats either don't work at all or the heat is so low it isn't noticeable. Does anyone have an idea how get the cold leather nice and toastY?

.Does anyone have any advice, experience, suggestions when it comes to non-functional outside rear view mirrors I dont' think it is in the switch because it will move the driver's side in one direction, but the passenger side is non functional.

Does anyone have any idea how to get the seat backs to be straight up?

Thanks for any and all assistance,

Mike

[chuck's]

I have a pre-owned 99 suburban in which the heated seats didn't work.There is a relay (module according to GM) that supplies power to the heating elements when the switch is placed in high or low.The ignition power has to be on,seat belt buckled and switch put on high or low setting.You should hear a slight click sound (relay energized) and the heating elements should warm up.If not, power may not be getting to the elements because of a faulty seat belt switch, high/low switch or relay.If these are fuctional,then the problem may well be the lower cushion heating element or the temperature switch for the element.On mine,I replaced the relay and put a jumper wire in the connector from the power input to the lower element to feed power to the upper cushion element.This worked to heat up the upper cushion element, but to repair the lower element, GM will sell me a new lower seat cushion complete for 450-500$$$.You could check with your local parts store and see if they have a supplier for just the element.I hope this helps.
The relay is partially buried under the very front of the lower seat cushion.

chuck's