GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 742490  Size: SH
  1. Remove the resonator assembly. Refer to Air Cleaner Outlet Resonator Replacement.
  2. Remove the evaporative emission (EVAP) canister purge line from the throttle body.
  3. Disconnect the throttle body electrical connector.
  4. Remove the throttle body assembly retaining bolts (1).
  5. Remove the throttle body assembly (2) and the gasket from the intake manifold.
  6. Clean the gasket surface.

Installation Procedure


    Object Number: 742490  Size: SH
  1. Install the throttle body assembly (2) to the intake manifold with the gasket.
  2. Add sealer GM P/N 12346004 (Canadian P/N 10953480) to the throttle control module bolt threads.
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the throttle body assembly retaining bolts (1) and tighten to 10 N·m (89 lb in).
  5. Connect the throttle body electrical connector.
  6. Install the EVAP canister purge line to the throttle body.
  7. Install the resonator assembly. Refer to Air Cleaner Outlet Resonator Replacement.