K 1500 Truck 4WD V8-4.8L VIN V (1999)
Body Control Module: Removal and Replacement
REMOVAL PROCEDURE
1. Disconnect the negative battery cable(s).
2. Remove the knee bolster.
IMPORTANT: The ignition switch should be in the OFF position when connecting or disconnecting the connectors to the BCM. Always
disconnect the brown BCM connector first. Connect the brown BCM connector last. The BCM can set DTCs with the ignition switch in the OFF
position. The BCM has battery run down protection for the courtesy lamp circuit. The BCM battery run down protection can not detect shorts on
inputs or other circuits which the BCM does not control. Use the scan tool in order to activate the POWER DOWN NOW mode in order to check
for current draws on circuits which are not controlled by the BCM or controlled by the battery run down protection system. If an excessive current
draw is detected refer to the Battery Electrical Drain/Parasitic Load.
3. Disconnect the brown connector.
4. Disconnect all other connectors.
5. Remove the BCM from the sliding bracket.
INSTALLATION PROCEDURE
