GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2003 🢒 Astro - 4WD 🢒 Engine 🢒 Engine Controls - 4.3L 🢒 Throttle Position Sensor Replacement

Removal Procedure

    Object Number: 12885 Size: SH
  1. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  2. Disconnect the throttle position (TP) sensor harness connector.

    3. Object Number: 10935 Size: SH
  3. Remove the mounting bolts from the TP sensor.

    4. Object Number: 10936 Size: SH

    Notice: The TP sensor is an electrical component. Do not soak the TP sensor in any liquid cleaner or solvent, as damage may result.

  4. Remove the TP sensor and gasket from the throttle body assembly.

Installation Procedure

    Object Number: 10936 Size: SH
  1. With the throttle valve closed, install the TP sensor on the throttle shaft.

    2. Rotate the TP sensor counterclockwise in order to align the mounting holes.


    Object Number: 10935 Size: SH

    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.

  2. Install the TP sensor mounting bolts.

    3. Tighten
    Tighten the bolts to 2 N·m (18 lb in).


    Object Number: 12885 Size: SH
  3. Connect the TP sensor harness connector.
  4. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.