Heated seat will not shut off. Runs down battery. Unplugged it but now seat is no longer adjustable as the same electrical connection runs that system. Dealership said due to Autostart. Autostart taken completely out and it still did it. Had another electrical guy replace the actual seat heater and it worked for awhile. Today (at -11 degrees) when I got into the car it turned over slowly and the seat was warm. I had not even turned the seat on. Any ideas?
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Does your Escalade have memory seats ?
There are 2 options of power seat systems available in full size trucks. The 6 way driver and passenger power seats, and 8 way driver and passenger power seats with driver memory. For the driver memory seat operation refer to Memory Seats Description and Operation . Power seats without memory are completely controlled through the power seat switch. Battery voltage is supplied to the power seat switch through the power seat circuit breaker. While the seat adjuster switches are in an inactive state the switch contacts are closed to the power seat switch ground circuit. When a power seat switch is pressed to an active state the switch contact is closed to the battery voltage supply circuit. Each seat adjuster motor is controlled by the power seat switch through 2 motor control circuits. The seat adjuster motors are bidirectional and the direction of adjuster motor rotation is determined by which of the adjuster motor control circuits is switched to battery voltage while the other remains grounded.
This sounds to me like the antitheft security system. If the computer doesn't read the transponder frequency coming from the key, it goes into anti theft and shuts down the starter and/or the injectors. If it starts for 1 to 5 seconds and then shuts down, its probably this. Read up about this on this link, it gives you symptoms and causes, plus a "do it yourself" solution if you decide that this is the problem. I've been dealing in GM vats-passlock-passkey securities for quite a while now. From your description, I'd guess this is the issue. http://vatspasslockpasskeysecurityhelp.yolasite.com/
Dumb question, are you sure you are using the driver one remote? Being a car dealer, some installers will power the unit to certain fuses and some times this can cause issues. He may have told you 30 but most of these guys really don;t know and they are taught once and never really know if it is a problem from car to car. It sounds like a power failure of some sort causing it to reprogram itself to original specs. I went to a NTB for a battery change and I too had some issues and to my luck the guy was a GM tech at one point. So he was able to give me a few tips. Now you may not have this luck but Maybe call a few local shops like this and ask them if the have any GM techs you can run and issue by. You would be suprised where some of these guys have come from. Especially with the layoffs and need to work, anywhere....
Hoepfully this helps.