Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
Hello there, I am Cam. Can I get your first name please? I do agree its a module, but not the Powertrain Control Module (PCM), rather I am thinking the Body Control Module (BCM). Can you tell me if you can cycle high to low beams when they remain on?
Clayton, that last bit is good information. I would like you to check a couple things before we go too far then. Can you see if there is any water intrusion, corrosion into or under the fuse block under the hood. See if any of the terminals have corrosion. If no then under the dash, left side under the steering wheel is the Body Control Module (BCM), its a thin tall module with several connectors about 1" x1", see if any are chaffing. If not then try tapping sharply on the housing of the Body Control Module (BCM) and see if that makes a difference. If no then I am thinking it is your Body Control Module (BCM) that has failed. And if tapping sharply on the Body Control Module (BCM) does change it, confirm wiring and connections and replace it anyway then .
No, the actuator would control the doors and specifically the actuator for the drivers side.
It is located under the dash, passengers side just right of centre over the transmission hump.
Here are directions. These show it without the centre console, but you can get at the single screw using a deep 7mm and ratchet then get at the actuator.
try the HVAC/ECAS fuse and see.
YEs, HVAC battery. Do that with the key off.