Can not find the body control module on my 1989 cadillac sedan deville -- anyone know where it is?

leaving the key on can overheat the the ignition system burning up the coil and control module

If you're asking about the ECM (Engine Control Module) it's under the dash behind the glove box.

Body Control Module

Hello: On the passenger side, Behind the glove box on top of the heater case is the Body control module, From underneath (passenger side) along side of the Programmer is the Engine control module. There is no one main ECU. This information applies to the sedan devilles with the 4.9 engine

Hello, The fuel pump is inside the gas tank. Remove the exhaust, Disconnect and remove all hoses and lines, also disconnect all electrical wires, remove 4 bolts from straps holding tank. Drop tank down. Remove lines and hoses from top of fuel pump module, remove lock ring, pull fuel pump module, turn unit as necessary so you don't destroy the fuel level sender. Hope this helps

the body control module went bad on you

you may need the throttle body cleaned there are idle passages in there and it sounds like they may be clogging up on you

Fords have the reset switch option only. Relays are mounted on the firewall

sounds like you have a faulty blower module. When looking at the blower motor under the hood, the module would be located about 12 inches to the right mounted on the a/c evaporator housing. It has 2 electrical connectors on it

I had same problem with my 89 cad. deville , I changed the BCM and since then no problems and everything works great now for over a year