GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 1996 🢒 Corsica 🢒 Engine 🢒 Engine Controls - 3.1L 🢒 Throttle Body Assembly Replacement

Removal Procedure

    Object Number: 12688 Size: SH
  1. Remove the air intake tube.
  2. Remove the IAC valve, and TP sensor, electrical connectors.
  3. Remove the fuel pipe clip at accelerator control cable bracket
  4. Remove the accelerator control cable bracket.
  5. Remove the accelerator control and cruise control cables.
  6. Remove the engine coolant pipe nut to gain access to throttle body attaching studs.
  7. Remove the nuts and bolts holding the throttle body to the intake manifold.
  8. Remove the throttle body assembly.

Installation Procedure

    Object Number: 12688 Size: SH

    Notice: Do not use solvent of any type when cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as damage to the gasket surfaces and throttle body assembly may result.

    Use care in cleaning the gasket surfaces on the intake manifold and the throttle body assembly, as sharp tools may damage the gasket surfaces.

  1. Clean the gasket surface on the intake manifold and the throttle body assembly.
  2. Install a new gasket, if necessary.
  3. Install the throttle body assembly.
  4. Install the throttle body retaining nuts and bolts (3).

    5. Tighten
    Tighten the throttle body retaining nuts and bolts to 28 N·m (21  lb ft).

    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 engine coolant pipe nut.
  6. Install the IAC valve, and TP sensor, electrical connectors.
  7. Install the accelerator control and cruise control cables.
  8. Install the accelerator control cable bracket.
  9. Install the fuel pipe at accelerator control cable bracket.
  10. Install the air intake tube.
  11. Inspect and check for complete throttle opening and closing positions by operating the accelerator pedal. Also check for poor carpet fit under the accelerator pedal.
  12. Inspect the throttle, it should operate freely without binding between full closed and wide open throttle. Refer to Accelerator Controls .