GM Service Manual Online
For 1990-2009 cars only

    Object Number: 928006  Size: SH
  1. Install the water outlet housing bolts (382, 388) into the water outlet housing. Ensure the longest bolt is installed in the lower left position (388).
  2. Install the water outlet housing gaskets to the water outlet housing.

  3. Object Number: 928004  Size: SH
  4. Place the water outlet housing in position to the cylinder heads while installing the bypass hose onto the engine front cover.
  5. Caution: Refer to Fastener Caution in the Preface section.

  6. Install the water outlet housing bolts into the cylinder heads.
  7. Tighten
    Tighten the water outlet housing bolts to 25 N·m (18 lb ft).

  8. Place the bypass hose clamps into position.

  9. Object Number: 948138  Size: SH
  10. Ensure that the plenum duct is fully attached to the front of the intake manifold.
  11. Tighten
    Tighten the plenum duct clamp (1) to 2.25 N·m (20 lb in).


    Object Number: 1510042  Size: SH
  12. Install a NEW throttle body gasket.

  13. Object Number: 927998  Size: SH
  14. Install the throttle body to the water outlet.
  15. Install the throttle body bolts.
  16. Tighten
    Tighten the throttle body bolts to 10 N·m (89 lb in).


    Object Number: 1254494  Size: SH
  17. Install the evaporative emission (EVAP) purge valve tube onto the EVAP purge solenoid.