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Removal & Installation

Disconnect negative battery cable. Release plastic retainers with blade of screwdriver and remove PCM cover. See Fig 1 . Disconnect PCM connectors. Remove PCM. To install, reverse removal procedure. After installation, PCM will need to programmed. See PCM REPROGRAMMING  under PROGRAMMING.

Fig 1: Removing Powertrain Control Module
G00021029Courtesy of GENERAL MOTORS CORP.