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2008 cadillac cts rear door lock problems.
Please check voltage on both sides of fuse dr lck located in the rear fuse panel.
When you use the door lock switch in the car it sends a signal to a relay which then activates an actuator inside the door.
Problem with your 2008 cadillac cts.
Each door has there own door lock solenoid the only thing they have in common is one fuse either they all work or none of them will work.
You must test the mechanism for lube or damage parts loose wires or connector corroded switch dirty lube with wd 40 test the motor or solenoid.
See the diagram attached.
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The actuator is the final step in the process in that it is a small motor with a set of gears that actually locks and unlocks the latch mechanism inside the door allowing the door to open.
Our list of 10 known complaints reported by owners can help you fix your 2008 cadillac cts.
For alternate oem part numbers rear left.
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Door lock actuator connector.
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The 2008 cadillac cts has 249 problems defects reported by cts owners.