Removal Procedure

Remove the outlet duct. Refer to Air Cleaner Resonator and Outlet Duct Replacement (L99, LS3) Air Cleaner Resonator and Outlet Duct Replacement (LS7) .

Fig 1: Identifying Throttle Body To Intake Manifold Retaining Bolts

Courtesy of GENERAL MOTORS COMPANY

CAUTION:

Do not insert any tools into the throttle body bore in order to avoid damage to the throttle valve plate.

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:

The intake manifold, throttle body, fuel injection rail, and fuel injectors may be removed as an assembly. If not servicing the individual components, remove the manifold as a complete assembly.

Remove the electrical wire harness connector from the throttle body.
Remove the throttle body to intake manifold retaining bolts (3).
Remove the throttle body (1).

NOTE:

The throttle body gasket is a single use part. The gasket must be discarded after removal.

Remove the throttle body to intake manifold gasket (2).
Discard the throttle body gasket.
Clean the throttle body and intake manifold mating surfaces.