C 1500 Truck 2WD V8-5.3L VIN T (1999)
Alarm Module: Service and Repair
PASSLOCK Reprogramming Seed and Key
You must perform a Theft relearn procedure if any of the following components have been replaced:
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Passlock(TM) sensor
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Body control module BCM
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Powertrain control module PCM
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Vehicle control module VCM
The above modules, with the exception for the Passlock sensor must also be programmed with each module's own vehicle configuration. See the
individual module service manual section.
There are two types of VTD relearn procedures:
Seed and Key (Scan Tool) Learn
Time required, approximately 10 minutes.
1. Ensure that the battery is fully charged.
2. Connect the scan tool to the DLC connector.
3. Follow the directions provided on the scan tool for service programming.
4. Disconnect the scan tool.
5. Connect scan tool to your Techline terminal. Follow the directions provided on the terminal.
6. Return to vehicle with the scan tool. Connect the scan tool to the DLC connector.
7. Turn the ignition switch off. The vehicle will start on the next ignition cycle.
Auto Learn
Time required, approximately 30 minutes. Refer to PASSLOCK Reprogramming Auto Learn. See: Keyless Entry/Service and
Repair/PASSLOCK Reprogramming Auto Learn
