02 gmc envoy heated seats

Just curious if anyone had done heated seat controls on one of these.  The switch is in pass dor and drivers door, they turn off with the vehicle and you need to hit the button to activate them.  I didn't install the r/s although i belive it is a compustar 1wams???maybe...   Anyways if anyonbe has any thoughts on this let me know.    Thanks a lotandrew nickle

I have done quite a few of these, and the best way I have found to turn the seats on is to run 2 wires into each door. You have to open the seat controlls and solder onto the switch contacts on the circuit board. Put the other side of the wires on pins 87 and 30 of a relay and trigger it closed with any availible output you have. Northstart.....or start it your damn self.

the 457G will turn them on automatically if temp below 0 C... also, does Passlock bypass and arm, disarm, lock, unlockKevin Gerry

Certified Electronics Technician

MECP First Class Installer

Owner/Installer

Classic Car Audio

since 1979

I dont think the heated seats can be controlled thru the data buss on anything before 2003. I could be wrong.Northstart.....or start it your damn self.

tragik wrote: I dont think the heated seats can be controlled thru the data buss on anything before 2003. I could be wrong.

This only applies to the truck platform. Tahoe, Suburban, pickups, etc.

TB, Envoy and Bravada all work from '02 up