Powertrain Control Module: Removal
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix, 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, 2002 Buick Regal, and 2002 Buick Century. However, it is still accessible from the selected car via links, so may be relevant.
PCM is located inside air cleaner housing assembly. See Figure. Turn OFF the ignition. Disconnect negative battery cable. Remove the left upper fender brace. Remove the air cleaner housing cover assembly. Without disconnecting the PCM connectors, remove the PCM and harness from the air cleaner housing. Disconnect the PCM electrical connectors.