GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2005 🢒 LaCrosse 🢒 Engine 🢒 Engine Controls - 3.6L (LY7) 🢒 Throttle Body Assembly Replacement

Removal Procedure
  1. Turn the ignition OFF.
  2. Remove the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement .

    3. Object Number: 1394050 Size: SH

    Notice: DO NOT use any mechanical device such as pliers or screwdrivers to disengage the connector. In order to prevent damage to the connector or harness wiring, both of the latches on the connector must be depressed with finger pressure only. When the latches are depressed the connector must then be pulled straight back without pulling on the wires in order to disengage. Failure to follow this procedure can lead to connector or wiring harness damage and failure.

  3. Remove the throttle body electrical connector.

    4. Object Number: 1580583 Size: SH
  4. Remove the throttle body bolts.
  5. 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: 1580583 Size: SH
  2. Install the throttle body and NEW gasket.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the throttle body bolts.

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


    Object Number: 1394050 Size: SH
  4. Install the throttle body electrical connector.
  5. Install the air cleaner intake duct. Refer to Air Cleaner Inlet Duct Replacement .
  6. Perform the idle learn procedure. Refer to Idle Learn.
  7. Use the scan tool to clear all DTCs.