GM Service Manual Online
For 1990-2009 cars only
  1. Ensure that the following conditions exist in order to prepare for BCM programming:
  2. • The battery is fully charged.
    • The ignition switch is in the RUN position.
    • The data link connector (DLC) is accessible.
  3. Refer to the latest Techline terminal and equipment user's instructions.
  4. If the BCM fails to accept the program, perform the following steps:
  5. 3.1. Inspect all BCM connections.
    3.2. Verify that the Techline terminal and equipment have the latest software version.
    3.3. Try to program the BCM again. If the programming fails again, replace the BCM. Refer to Body Control Module Replacement .
    3.4. For a functional check, refer to Diagnostic System Check - Body Control System .
  6. Clear the diagnostic trouble codes (DTCs) after the programming is complete.