GM Service Manual Online
For 1990-2009 cars only

    Object Number: 331856  Size: SH

    Important: The intake manifold carrier gaskets are attached to the intake manifold through a snap-lock feature. When you install the intake manifold, the carrier gaskets will remain attached to the manifold. It is not necessary to replace the gaskets unless there is damage to the seals.

  1. Clean any debris from the cylinder head or intake manifold gaskets. Place the intake manfiold in position on the cylinder heads.
  2. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  3. Install the four spacers (2) and studs (1) and install the remaining six bolts (3).
  4. Tighten
    Tighten the intake manifold bolts and studs starting from the center and working outward in a circular pattern to 10 N·m (89 lb in).


    Object Number: 205490  Size: SH
  5. Connect the throttle body coolant hose (3) to the throttle body inlet pipe (1) and water crossover (4) with hose clamps (2).

  6. Object Number: 211443  Size: SH
  7. Connect the fuel rail ground wire at the front of the rear (right) cylinder head.
  8. Tighten
    Tighten the fuel rail ground wire retaining bolt to 11 N·m (97 lb in).


    Object Number: 205470  Size: SH
  9. Attach the fuel rail (1) to the rear left lift bracket (4) using the retaining bolt (3).
  10. Tighten
    Tighten the fuel rail bracket retaining bolt to 4 N·m (35 lb in).


    Object Number: 211444  Size: SH
  11. Install the purge solenoid harness and retaining bolt. Connect the hose to the intake manifold.
  12. Tighten
    Tighten the purge solenoid harness retaining bolt to 12 N·m (106 lb in).


    Object Number: 206312  Size: SH
  13. Connect the throttle body coolant outlet hose (1) to the throttle body coolant pipe (3) with hose clamps (2).
  14. Place the coolant overflow pipe (5) on the intake manifold studs (4).

  15. Object Number: 315113  Size: SH
  16. Install a new PCV valve in the camshaft cover.

  17. Object Number: 331797  Size: SH
  18. Connect the PCV fresh air feed tube (1) to the camshaft cover and the intake manifold,

  19. Object Number: 205668  Size: SH
  20. Connect the dirty air PCV tube (1) to the PCV valve (2) and camshaft cover.

  21. Object Number: 53639  Size: SH
  22. Connect the EGR and crankcase ventilation pipe at the throttle body spacer.