Powertrain Control Module: Removal
WARNING: This page is about a different car, the 2003 Pontiac Grand Prix, 2003 Chevrolet Monte Carlo, 2003 Chevrolet Impala, 2003 Buick Regal, and 2003 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. Disconnect the negative battery cable. Remove the screws from the air cleaner top cover. Remove the air cleaner top cover. Disconnect the harness connectors from the PCM. Remove the PCM.