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Premium Member
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134 Posts
Discussion Starter · #1 ·
I started getting the message right rear door ajaramd interior lights would stay on. I replaced the actuator and problem as solved. Drove down the road and back to same problem. Any ideas appreciated.
 

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GMC..Professional Grade
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3,962 Posts
I have had to replace the BCM because of this, but here is the test:

1. Disconnect the door latch switch connector on the latch. Dark Blue/Black wire and a Black wire.

2. Check for more than 10 volts on the Light Blue/Black wire.

3. If the voltage is low, remove the wire from the Body Control Module (BCM) 16 cavity Purple connector at terminal A2 (this wire changes color to a Light Green/Black). Check for more than 10 volts on the BCM side of the circuit.

4. If the voltage is now high, check for a shorted wire between the BCM and the door latch.

5. If the voltage is still low, replace the BCM.
 
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