GM Service Manual Online
For 1990-2009 cars only

Throttle Body Installation L98, LS2


    Object Number: 1954140  Size: SH

    Important: DO NOT use the throttle body gasket again. Install a NEW gasket during assembly.

    Important: Align the locating tab of the gasket with the notch in the manifold.

  1. Install the throttle body gasket (2).
  2. Install the throttle body (1).
  3. Notice: Refer to Fastener Notice in the Preface section.

  4. Install the throttle body to intake manifold retaining bolts (3).
  5. Tighten
    Tighten the bolts to 10 N·m (89 lb in).

Throttle Body Installation LS3


    Object Number: 1875999  Size: SH

    Important: DO NOT use the throttle body gasket again. Install a NEW gasket during assembly.

  1. Install the throttle body gasket (509) to the intake manifold. Align the locating tab of the gasket with the notch in the manifold.
  2. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the throttle body (508) and bolts (538).
  4. Tighten
    Tighten the throttle body bolts to 10 N·m (89 lb in).