GM Service Manual Online
For 1990-2009 cars only

The EBTCM contains sophisticated on-board diagnostics. The diagnostics identify the source of any system malfunction as specifically as possible. This diagnosis occurs whether the malfunction was intermittent or constant. The on-board diagnostics are accessed with a Diagnostic Computer Scan Tool.

The Diagnostic Computer Scan Tool performs the following functions:

    â€¢ Specific identification of the last diagnostic trouble code
    â€¢ Storage of specific data at the time of the malfunction
    â€¢ Monitoring of each input and output, enabling the following operations:
      â€¢ Malfunction confirmation
      â€¢ Repair verification
    â€¢ Manual control of the components
    â€¢ Automated functional tests