Body Control Module: Service and Repair

Generic Electronic Module (GEM)













Removal

NOTE: A new Generic Electronic Module (GEM) is delivered in a "manufacturing mode" with a pre-set DTC. A successful configuration of the GEM, then a successful self-test including the clearing of all DTCs is required in order to clear the manufacturing mode DTC. The manufacturing mode DTC is:
- B2477 (Module Configuration Failure)

1. NOTE: This step is only necessary if the GEM is being replaced.

Upload the module configuration information from the GEM into the scan tool. For additional information, refer to Module Configuration Programming and Relearning.

2. NOTE: It may be easier to move/rotate the GEM to a lower position in order to access the 5 electrical connectors and their associated locking mechanisms.

Remove the 2 screws and position the GEM to access the electrical connectors.

3. Disconnect the electrical connectors and remove the GEM.

Installation

1. Connect the electrical connectors.

2. NOTE: If the GEM is not being replaced, this is the last step that is necessary.

Position the GEM and install the 2 screws.

3. NOTE: When successful, this step provides the calibration necessary for the GEM operation and clears DTC B2477. The clearing of this DTC indicates the calibration data has been successfully downloaded to the GEM.

Download the GEM configuration information from the scan tool to the GEM. For additional information, refer to Module Configuration Programming and Relearning.

4. Carry out the GEM self-test (must include an on-demand self-test) and then repeat the self-test to confirm all DTCs have been cleared.