Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2000C TAHOE 2WD V8-4.8L VIN VREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSBODY CONTROL MODULESERVICE AND REPAIR
2000 Chevrolet C Tahoe 2WD V8-4.8L VIN V
Body Control Module: Service and Repair
2000 Chevrolet C Tahoe 2WD V8-4.8L VIN VSECTION Service and Repair
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
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 cannot 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.
3. Disconnect the brown connector.
4. Disconnect all other connectors.
5. Remove the BCM from the sliding bracket.
INSTALLATION PROCEDURE
1. Slide the BCM onto the bracket.
2. Connect all the connectors except the brown connector.
3. Connect the brown connector.
4. Install the knee bolster.
5. Connect the negative battery cable(s).
6. Reprogram the BCM. Programming and Relearning
CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.
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 cannot 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.
3. Disconnect the brown connector.
4. Disconnect all other connectors.
5. Remove the BCM from the sliding bracket.
INSTALLATION PROCEDURE
1. Slide the BCM onto the bracket.
2. Connect all the connectors except the brown connector.
3. Connect the brown connector.
4. Install the knee bolster.
5. Connect the negative battery cable(s).
6. Reprogram the BCM. Programming and Relearning
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.