Removal & Installation

Turn ignition off. Disconnect negative battery cable. Disconnect Intake Air Temperature (IAT) sensor harness connector. 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 Powertrain Control Module (PCM) and harness from PCM housing without disconnecting harness connectors. Disconnect harness connectors from PCM and remove PCM. To install, reverse removal procedure. Program replacement PCM using appropriate equipment and latest software. See COMPUTER RELEARN PROCEDURES - GENERAL MOTORS CORP. article in GENERAL INFORMATION