GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 2001 🢒 Unit Repair 🢒 Engine 🢒 Engine Mechanical - 2.5L (LB8) and 3.0L (LW9) 🢒 Upper Intake Manifold Installation

    Object Number: 626622 Size: SH
  1. Install the upper intake manifold gaskets.
  2. Install the upper intake manifold.

    3. 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 upper intake manifold bolts and studs. Apply threadlock GM P/N 12345382 or equivalent to the threads.

    4. Tighten
    Tighten the upper intake manifold bolts and studs to 25 N·m (18 lb ft).


    Object Number: 511787 Size: SH
  4. Install the EGR valve pipe and gasket.

    5. Tighten
    Tighten the EGR valve pipe to 25 N·m (18 lb ft).

  5. Install the EGR valve and gasket.
  6. Install the EGR valve bolts.

    7. Tighten
    Tighten the EGR valve bolts to 30 N·m (22 lb ft).

  7. Install the spark plug wires.

    8. Object Number: 626616 Size: SH
  8. Install the MAP sensor bracket.
  9. Install the MAP sensor bracket bolt.

    10. Tighten
    Tighten the MAP sensor bracket bolt to 25 N·m (18 lb ft).


    Object Number: 475271 Size: SH
  10. Install the MAP sensor.
  11. Install the MAP sensor bolts.

    12. Tighten
    Tighten the MAP sensor bolts to 5 N·m (44 lb in).

  12. Install the MAP sensor electrical connector.