2000 Cadillac Escalade Body Control Module

The proper way is to remove the negative battery cable, the compartment trim plate, the audio amplifier, and the body control module.

In the diagnostic mode, diagnostic trouble codes (DTCs) are displayed in numerical order. The first DTC displayed is always DTC 12, followed by any current DTCs (21 to 24) or any history DTCs (31 to 34). Remote control door lock transmitter diagnostic DTCs will then be displayed if activated while in the diagnostic mode. The last DTC displayed is the beginning configuration display. The first number following DTC 55 is the hardware configuration. The second number is the software configuration. DTC 55 and the 2 configuration numbers are always displayed. After the configuration numbers are displayed, the entire list is repeated beginning with DTC 12.

You need to install the audio amplifier, the compartment trim plate, and the negative battery cable.

You need to turn the ignition switch to the RUN position and turn the ignition switch to the OFF position. Remove the RADIO fuse 17 from the instrument panel fuse block and turn the ignition switch to the ACC position. Within 5 seconds, turn the ignition switch to the OFF position. Immediately (within one second) turn the ignition switch back to the ACC position. This action will enter the diagnostic mode and three audible warning tones will occur for mode verification.

It can be cleared by depressing and holding the door lock switch in the unlock position for 4 seconds while the BCM is in diagnostic mode. After 4 seconds, an audible warning tone will sound 3 times confirming that the DTCs have been cleared.