Removal & Installation (3.0L, 3.1L, 3.4L, 3.5L, 3.8L, 4.6L & 5.7L)
Turn ignition off. Disconnect negative battery cable. Locate PCM. See PCM LOCATION table. Remove any necessary components to gain access to PCM. Disconnect harness connectors from PCM. Remove PCM mounting bolts (if equipped). Remove PCM. To install, reverse removal procedure. Transfer any necessary components (i.e., knock sensor module, etc.) to NEW PCM before installation. Program replacement PCM using appropriate equipment and latest software. See COMPUTER RELEARN PROCEDURES article in GENERAL INFORMATION.
PCM LOCATION
| Application | Location |
|---|---|
| 1.0L & 1.3L | Behind Glove Box |
| 1.8L | Under Instrument Panel, Behind Center Console |
| 1.9L | In Engine Compartment, Next To Battery |
| 2.2L & 2.4L (Cavalier & Sunfire) | Inside Right Front Fender |
| 2.2L (Saturn) | Behind Glove Box |
| 2.4L (Alero & Grand Am) | Under Left Side Of Instrument Panel, Near Steering Column |
| 3.0L (Catera) | On Left Side Of Engine Compartment, In ECM Housing |
| 3.0L (Saturn) | Mounted On Left Rear Of Engine |
| 3.1L (Century & Grand Prix) | On Left Side Of Engine Compartment, In Air Cleaner Assembly |
| 3.1L (Malibu) | Under Left Side Of Instrument Panel, Near Steering Column |
| 3.1L (Lumina) | On Right Side Of Engine Compartment, Forward Of Strut Tower |
| 3.4L (Alero & Grand Am) | Under Left Side Of Instrument Panel, Near Steering Column |
| 3.4L (Impala & Monte Carlo) | On Right Side Of Engine Compartment, In Air Cleaner Assembly |
| 3.5L | On Left Side Of Engine Compartment, In Air Cleaner Assembly |
| 3.8L (Bonneville, Grand Prix, LeSabre, Park Avenue & Regal) | On Left Side Of Engine Compartment, In Air Cleaner Assembly |
| 3.8L (Camaro & Firebird) | On Right Side Of Engine Compartment, Rear Of Wheelhouse |
| 3.8L (Impala & Monte Carlo) | On Right Side Of Engine Compartment, Inside Air Cleaner Assembly |
| 4.6L | In Left Front Corner Of Engine Compartment, Under Air Cleaner |
| 5.7L (Camaro & Firebird) | On Right Side Of Engine Compartment, Rear Of Wheelhouse |
| 5.7L (Corvette) | Behind Right Front Fender, Under Battery |