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 231 (BODY CONTROL MODULES)PROGRAMMINGTHEFT DETERRENT MODULESET UP PROCEDURE
2002 Chevrolet Avalanche 2500, RWD
Set Up Procedure
2002 Chevrolet Avalanche 2500, RWDSECTION Set Up Procedure
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
When replacing a theft deterrent control module with an GM SPO Replacement Part, module will learn keys immediately. Existing Powertrain Control Module (PCM) must learn new fuel continue password when theft deterrent control module is replaced. When replacing a PCM with a GM SPO Replacement Part, new PCM will learn incoming fuel continue password immediately after programming and upon receipt of a password message. Once a password message is received and a password is learned, perform learn procedure to change password again. A PCM which had been installed in another vehicle will have learned fuel continue password of another vehicle Theft Deterrent Control (TDC) module. Perform either 10-minute relearn procedure or 30-minute relearn procedure after programming to learn fuel continue password of current vehicle TDC modules. When performing either relearn procedure, all previously learned keys will be erased from theft deterrent control module memory. Additional keys may be learned immediately after first relearn procedure by inserting an additional key and turning ignition switch to RUN position within 10 seconds of removing a previously learned key. Use only a master key when performing first relearn procedure. If a valet key is used first, theft deterrent control module will not allow additional keys to be learned.
- Connect scan tool to Data Link Connector (DLC). DLC is located below driver side of instrument panel, near steering column.
- Turn ignition switch to RUN position.
- Using scan tool, select SETUP NEW VTD MODULE in VTD SPECIAL FUNCTIONS list.
- Follow scan tool instructions.
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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.