Removal & Installation (Diesel)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2002 GMC Savana, 2002 Chevrolet Chevy Express, 2001 GMC Savana Special, 2001 GMC Savana Camper Special, and 2001 GMC Savana. However, it is still accessible from the selected car via links, so may be relevant.
Disconnect the negative battery cables. Remove engine cover. Disconnect harness connectors from powertrain control module (PCM). See Fig 1 . Remove PCM mounting nuts. Remove PCM from mounting bracket. Remove the PCM mounting hardware. To install, reverse removal procedure. Program as necessary. See PROGRAMMING . The MIL, anti-lock and brake lights will continue to be enabled until PCM is programmed. Once programming is complete, lights will be turned OFF and normal operation will occur.