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 18 (BODY CONTROL MODULES)PROGRAMMINGPASSLOCK(TM) SYSTEM10 MINUTE LEARN PROCEDURE
2002 Chevrolet Avalanche 2500, RWD
10 Minute Learn Procedure
2002 Chevrolet Avalanche 2500, RWDSECTION 10 Minute Learn Procedure
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana Special, 2001 GMC Savana Camper Special, and 2001 GMC Savana. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
This procedure requires a Tech 2 Scan tool and a Techline(R) terminal with current Service Programming System (SPS) software.
- Connect Tech 2 scan tool to vehicle.
- Select REQUEST INFORMATION under SERVICE PROGRAMMING menu.
- Disconnect Tech 2 from vehicle and connect to a Techline(R) terminal.
- On Techline(R) terminal, select THEFT MODULE RE-LEARN under SERVICE PROGRAMMING menu.
- Disconnect Tech 2 from Techline(R) terminal and connect to vehicle.
- Turn ignition switch to RUN position.
- Select VTD RE-LEARN under SERVICE PROGRAMMING menu.
- Attempt to start engine, then release key to RUN position, vehicle will not start.
- Observe SECURITY indicator. After about 10 minutes indicator will turn OFF. Vehicle is now ready to relearn Passlock(tm) sensor data code and/or password on next ignition switch transition from OFF to CRANK position.
- Turn ignition switch to OFF position, and wait 5 seconds.
- Start engine. Vehicle has now learned the password.
- Using Tech 2 scan tool, clear any DTCs.
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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.