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 MANUALSCHEVROLET2002AVALANCHE 2500, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 620 (KEYLESS ENTRY SYSTEM)REPAIR INSTRUCTIONSTRANSMITTER BATTERY 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 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Install the battery with the (+) positive side down.
- Close the transmitter case and perform the following steps:
- 2.1. Align the top and bottom covers.
- 2.2. Press together the top and the bottom covers.
- 2.3. Inspect the operation of the transmitter.
- Synchronize the transmitter. Refer to Transmitter Synchronization .
RENDER: 1.0x
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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.