GM Service Manual Online
For 1990-2009 cars only

Introduction

The procedures below are designed to set-up the body control module (BCM) correctly during BCM related service. Before you start, read these procedures carefully and completely.

Important: The following procedures must be followed:

  1. Programming the BCM
  2. Programming Theft Deterrent System Components, if equipped with Passlock System
  3. Relearn Restraints ID

Programming the BCM

Important: After the procedure is completed, the personalization settings of the BCM are set to a default setting. Inform the customer that the personalization must be set again.

Perform the following steps:

  1. Ensure that the following conditions exist:
  2. • The battery is fully charged.
    • The ignition is On with the engine Off.
    • All accessories are turned off.
    • All modules and devices are connected and functioning properly before programming.
  3. Follow the SPS instructions on the Techline Terminal and scan tool to program the BCM.
  4. If the BCM fails to accept the program, follow these steps:
  5. • Inspect all BCM connections.
    • Verify that SPS Techline Terminal and scan tool have the latest software version.

Programming Theft Deterrent System Components

Important: This procedure has to be performed only for vehicles equipped with Passlock System.

Perform the Programming Theft Deterrent System Components in Theft Deterrent after successfully finishing the Setup New BCM procedure. If the Programming Theft Deterrent System Components in the Theft Deterrent procedure is not performed after a BCM replacement, one of the following conditions will occur:

    • The vehicle will not be protected against theft by the PASSLOCK system.
    • The engine will not crank nor start.

Relearn Restraints ID

Perform the special function for BCM "Setup SDM Serial Number in BCM" with the scan tool.

Important: After programming, perform the following to avoid future misdiagnosis:

  1. Turn the ignition OFF for 10 seconds.
  2. Connect the scan tool to the data link connector.
  3. Turn the ignition ON with the engine OFF.
  4. Use the scan tool in order to retrieve history DTCs from all modules.
  5. Clear all history DTCs.