GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 899725  Size: SH

    Caution: Handle the electronic throttle control components carefully. Use cleanliness in order to prevent damage. Do not drop the electronic throttle control components. Do not roughly handle the electronic throttle control components. Do not immerse the electronic throttle control components in cleaning solvents of any type.

    Note: If the vehicle is equipped with adjustable pedals refer to Accelerator Pedal Assembly Replacement.

  1. Disconnect the accelerator pedal position (APP) sensor electrical connector.

  2. Object Number: 742494  Size: SH
  3. Remove the 3 APP sensor bolts (1).
  4. Remove the APP sensor (2).

Installation Procedure


    Object Number: 899728  Size: SH
  1. Install the APP sensor.
  2. Caution: Refer to Fastener Caution in the Preface section.

  3. Install the 3 APP sensor bolts (1) and tighten to 20 N·m (15 lb ft).

  4. Object Number: 899725  Size: SH
  5. Connect the APP sensor electrical connector.
  6. Verify that the vehicle meets the following conditions:
  7. • The vehicle is not in a reduced engine power mode.
    • The ignition is ON.
    • The engine is OFF.
  8. Connect a scan tool in order to test for a proper throttle-opening and throttle-closing range.
  9. Operate the accelerator pedal and monitor the throttle angles. The accelerator pedal should operate freely, without binding, between a closed throttle, and a wide open throttle.