Key fob, door lock switch, trunk opener and gas filler lid suddenly stopped working?

2001 CADILLAC DEVILLE
140,000 MILES
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GLANE
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All of a sudden the remote key will not open anything including the door locks. Also the door locks will not work by the inside driver door toggle switch. At the same time the trunk opener and gas filler lid will not open by using the buttons on the dash. These problems all happened at the same time. Any help will be appreciated. Can't figure out by looking at the fuse boxes.
May 17, 2021 at 6:26 PM
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ASEMASTER6371
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Good morning,

I attached the wiring diagram for you of the trunk and the door locks. You will need to verify power to the fuses listed. The fuse box is in the back of the car.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

https://www.2carpros.com/articles/how-to-check-a-car-fuse

Check the fuses for power on both sides. The fuse block itself was a common failure.

Roy
May 18, 2021 at 2:11 AM