Removal And Installation
If this Electronic Control Unit (ECU) is being replaced with a new unit, use a diagnostic scan tool to perform the Flash Programming Procedure (if available). This will confirm that the module is updated to the latest applicable software level.
The Electronic Shifter Module (ESM) is part of the shifter assembly. For 8HP50 Refer to SHIFTER, TRANSMISSION, REMOVAL AND INSTALLATION or for 8HP75 refer to SHIFTER, TRANSMISSION, REMOVAL AND INSTALLATION .
If this Electronic Control Unit (ECU) is being replaced with a new unit, a diagnostic scan tool MUST be used to determine if alignment of the PROXI configuration data into the new ECU is needed. If PROXI alignment is needed, follow the routine outlined in the diagnostic scan tool for PROXI Configuration Alignment under the Body Control Module (BCM) Miscellaneous Functions menu.