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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 840 (BODY CONTROL SYSTEM)REPAIR INSTRUCTIONSBODY CONTROL MODULE REPLACEMENTINSTALLATION PROCEDURE
2002 Chevrolet Avalanche 2500, RWD
Installation Procedure
2002 Chevrolet Avalanche 2500, RWDSECTION Installation Procedure
WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Slide the BCM onto the bracket.
- Connect all the connectors (1) except the brown connector.
- Connect the brown connector.
- Install the knee bolster. Refer to Knee Bolster Replacement in Instrument Panel, Gages, and Console.
- Connect the negative battery cable(s).
- Reprogram the BCM. Refer to Body Control Module (BCM) Programming/RPO Configuration .
- Perform the Passlock Learn Procedure. Refer to Programming Theft Deterrent System Components in Theft Deterrent
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.