GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 GMC C-Series Medium Duty Truck B7 🢒 Transmission/Transaxle 🢒 Automatic Transmission - Allison 🢒 Transmission Control Module Replacement

Removal Procedure
  1. Disconnect all of the electrical connectors from the control module and the module interface.

    2. Object Number: 201605 Size: SH
  2. Remove the three screws securing the module interface to the bracket.
  3. Remove the four screws, the washers, and the nuts securing the bracket to the frame rail.
  4. Remove the four screws securing the control module to the bracket.

Installation Procedure

    Object Number: 201605 Size: SH
  1. Install the four screws in order to secure the control module to the bracket.
  2. Install the four screws, the washers, and the nuts in order to secure the bracket assembly to the frame rail.
  3. Install the three screws in order to secure the module interface to the bracket.
  4. Connect all of the electrical connectors to the control module and to the module interface.