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Powertrain Control Module: Installation

WARNING: This page is about a different car, the 2002 GMC Cab & Chassis Sierra and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the PCM mounting hardware. See Fig 1 .
  2. Install the connectors to the PCM.
  3. Install the PCM in the passenger compartment behind glove box.
  4. Connect the negative battery cable. The MIL, the anti-lock and the brake lamps will continue to be enabled until the PCM is programmed. Once the programming is complete, the lamps will be turned off and normal operation will occur.
Fig 1: Removing & Installing PCM
G00080144Courtesy of GENERAL MOTORS CORP.