Removal & Installation

Turn ignition off. Disconnect negative battery cable. Disconnect electrical harness connector from Intake Air Temperature (IAT) sensor. Loosen clamp attaching air intake duct to air cleaner housing. Carefully remove air intake duct from throttle body and from air cleaner housing. Remove 2 screws from both air cleaner housing sections. Remove air cleaner housing cover assembly. Remove PCM and harness from PCM housing without disconnecting electrical connectors. Disconnect electrical connectors from PCM and remove PCM. To install PCM, reverse removal procedure. Program replacement PCM using appropriate equipment and latest software. See COMPUTER RELEARN PROCEDURES -- GENERAL MOTORS article in GENERAL INFORMATION