Control Module HVAC: Service and Repair

Rear Audio and Temperature Control (RATC) Module













Removal and Installation

NOTE: Prior to removal of the module, it is necessary to upload the module configuration to a scan tool. This information needs to be downloaded into the new module once installed.

1. NOTE: A new Rear Audio and Temperature Control (RATC) module is delivered in a manufacturing mode with a pre-set DTC of B2477 (Module Configuration Failure). This DTC will clear when the module has been successfully configured during Programmable Module Installation (PMI).

NOTE: This step is necessary only if the RATC module is being replaced with a new one.

Upload the module configuration information from the RATC module.

2. Remove the rear seat backrest.

3. Drill out the 2 rivets, disconnect the electrical connector and remove the RATC module.

4. NOTE: Once the new module is installed (if it was replaced), it is necessary to download the module configuration information from the scan tool into the new module.

To install, reverse the removal procedure.
- Using the Heavy Duty Riveter, install the new rivets.