GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 177620  Size: SH
  1. Disconnect the battery negative cable. Refer to

    Caution: Before servicing any electrical component, the ignition and start switch must be in the OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect the negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to the vehicle or its components.

    in Cautions and Notices.
  2. Remove the drive belt. Refer to Drive Belt Replacement
  3. Remove the A/C compressor from the mounting bracket, if equipped, and set it aside.
  4. Important: It is not necessary to evacuate the A/C refrigerant. Refer to Air Conditioning Compressor Replacement in HVAC.

  5. Remove the lower intake manifold. Refer to Intake Manifold Replacement
  6. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement .
  7. Remove the valve rocker arms and push rods. Refer to Valve Rocker Arm and Push Rod Removal
  8. Remove the valve rocker arm cover, if necessary. Refer to Valve Rocker Arm Cover Replacement .
  9. Remove the power steering pump pulley. Refer to Power Steering Pump Replacement in Steering.

  10. Object Number: 188295  Size: SH
  11. Remove the power steering pump mounting bracket using the following procedure:
  12. • Disconnect the electrical connector from the power steering pump.
    • Remove the two nuts holding the power steering pump to the engine.
    • Remove the power steering pump mounting bracket bolts and the nut.
    • Slide the power steering pump mounting bracket forward with the power steering pump still attached.
    • Set the power steering pump and the mounting bracket aside.
    • Remove the stud.
  13. Disconnect the wiring bracket from the rear of the right cylinder head.

  14. Object Number: 205505  Size: SH
  15. For the right side cylinder head, remove the following components:
  16. • Generator. Refer to Generator Replacement .
    • Oil indicator tube. Refer to Oil Level Indicator and Tube Replacement
  17. Remove the generator mounting bracket using the following procedure:
  18. • Remove one nut from the stud.
    • Remove three bolts from the bracket.
    • Slide the mounting bracket off of the stud.
    • Remove the stud from the cylinder head.

    Object Number: 11482  Size: SH
  19. Remove the sixteen cylinder head bolts.
  20. Remove the cylinder head and the gasket. Refer to Cylinder Head Removal (Right)
  21. Clean all sealing surfaces.Refer to Cylinder Head Clean and Inspect

Installation Procedure

Tools Required
J 36660-A Torque Angle Meter


    Object Number: 11482  Size: SH
  1. Install the cylinder head. Refer to Cylinder Head Installation (Right)
  2. Install the valve rocker arms and the push rods. Refer to Valve Rocker Arm and Push Rod Replacement

  3. Object Number: 188295  Size: SH
  4. For the left side cylinder head, install the power steering pump mounting bracket using the following procedure:
  5. 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.

    • Install the stud to the cylinder head.

    Tighten
    Tighten the stud to 22 N·m (16 lb ft).

    • Loosely assemble the mounting bracket over the stud.
    • Install a nut to the stud finger tight.
    • Install the three bolts finger tight.
    • Install the two nuts to the power steering pump finger tight.

    Tighten
    Tighten the nuts and bolts to 44 N·m (32 lb ft).


    Object Number: 188373  Size: SH
  6. Install the power steering pump pulley. Refer to Power Steering Pump Replacement in Steering.
  7. Connect the electrical connector to the power steering pump.

  8. Object Number: 205505  Size: SH
  9. For the right side cylinder head, install the generator mounting bracket using the following procedure:
  10. • Install the stud.

    Tighten
    Tighten the stud to 22 N·m (16 lb ft).

    • Loosely assemble the generator mounting bracket over the stud.
    • Install a nut to the stud finger tight.
    • Install the three bolts finger tight.

    Tighten
    Tighten the nuts and bolts to 44 N·m (32 lb ft).

    • Install the generator. Refer to Generator Replacement .
    • Oil indicator tube. Refer to Oil Level Indicator and Tube Replacement
  11. Install the exhaust manifold. Refer to Exhaust Manifold Replacement .
  12. Install the lower intake manifold. Refer to Intake Manifold Replacement
  13. Install the valve rocker arm covers. Refer to Valve Rocker Arm Cover Replacement .
  14. Install the A/C compressor, if equipped. Refer to Air Conditioning Compressor Replacement in HVAC.
  15. Install the drive belt. Refer to Drive Belt Replacement .
  16. Connect the battery negative cable. Refer to Battery Cable Replacement in Engine Electrical.