GM Service Manual Online
For 1990-2009 cars only

Throttle Body Assembly Replacement LP1, LY7

Removal Procedure

  1. Turn the ignition OFF.
  2. Remove the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement.
  3. Notice: Refer to Disengaging Connectors Notice in the Preface section.


    Object Number: 945417  Size: SH
  4. Remove the throttle body electrical connector.

  5. Object Number: 1285256  Size: SH
  6. Unlock and reposition the wiring harness conduit.

  7. Object Number: 1285255  Size: SH
  8. Remove the throttle body bolts.
  9. Remove the throttle body and gasket.

Installation Procedure

  1. Carefully clean the throttle body mounting surfaces of any gasket and/or seal material.

  2. Object Number: 1285255  Size: SH
  3. Install the throttle body and NEW gasket.
  4. Notice: Refer to Fastener Notice in the Preface section.

  5. Install the throttle body bolts.
  6. Tighten
    Tighten the throttle body bolts to 10 N·m (89 lb in).


    Object Number: 1285256  Size: SH
  7. Install the wiring harness conduit.

  8. Object Number: 945417  Size: SH
  9. Install the throttle body electrical connector.
  10. Install the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement.
  11. Perform the throttle learn procedure. Refer to Throttle Learn.
  12. Use the scan tool to clear all DTCs.