GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Corvette 🢒 Engine 🢒 Engine Controls - 5.7L 🢒 Electronic Throttle Actuator Control Module Replacement

Removal Procedure
  1. Remove the wheelhouse filler panel. Refer to Wheelhouse Filler Replacement in Body Front End.

    2. Object Number: 519845 Size: SH
  2. Remove the fasteners retaining the throttle actuator control (TAC) module to the powertrain control module (PCM) mounting bracket.

    3. Important: 

       • Remove any debris from the TAC module connector surfaces before servicing the TAC module. Inspect the TAC module connector gaskets if you diagnose or replace the TAC module. Verify that the gaskets are installed correctly. The gaskets prevent contaminate intrusion into the TAC module.
       • Do not touch the connector pins in order to prevent possible electrostatic discharge (ESD) damage to the TAC module.
       • The ignition should always be OFF if you install or remove the TAC module connectors.

  3. Remove the electrical connectors from the TAC module.
  4. Remove the TAC module from the vehicle.

Installation Procedure

    Object Number: 519845 Size: SH
  1. Connect the electrical connectors to the TAC module.
  2. Align the hole in the rear mounting tab of the TAC module to the corresponding hole in the PCM mounting bracket. Position the TAC module below the rear mounting tab for greater clearance in order to install the rear retaining fastener.
  3. Install the TAC module rear retaining fastener.
  4. Align the front mounting holes of the TAC module.

    5. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  5. Install the TAC module front retaining fasteners.

    6. Tighten
    Tighten the TAC module retaining fasteners to 2.0 N·m (17 lb in).

  6. Install the wheelhouse filler panel. Refer to Wheelhouse Filler Replacement in Body Front End.