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PCM Programming Set Up With Special Tool
- Ensure that the following conditions have been met:
- The battery is fully charged.
- The scan tool cable connection at the Data Link Connector (DLC) is secure.
- Turn OFF the ignition.
- Remove the passenger side floor access panel. See.
- Remove the splice pack/star connector shorting bars from both splice pack/star connectors. It may be necessary to remove splice pack/star connectors from the mounting positions.
- Install the star connector cable No. 1 from the Serial Data Link Tester to the 12-pin splice pack/star connector. This is the connector with 8 or 10 wires.
- Install the star connector cable No. 2 from the Serial Data Link Tester to the 12-pin splice pack/star connector. This is the connector with 4 wires.
- Select the star connector cable No. 1 on the Serial Data Link Tester toggle switch.
- Select position "B" on the Serial Data Link Tester.
Courtesy of GENERAL MOTORS CORP.