GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2001 🢒 Safari - 4WD 🢒 Engine 🢒 Engine Cooling 🢒 Cylinder Head Replacement - Left Side

Removal Procedure

    Object Number: 288833 Size: SH
  1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Remove the engine cover. Refer to Engine Cover Replacement in Interior Trim.
  3. Remove the engine cooling fan. Refer to Fan Replacement in Engine Cooling.
  4. Remove the air conditioning compressor, if equipped. Refer to Air Conditioning Compressor Replacement in Heating, Ventilation and Air Conditioning.
  5. Remove the nut holding the power steering pump rear bracket to the engine.

    6. Object Number: 475833 Size: SH

    Important: The power steering pump can remain on the power steering pump mounting bracket. The pump hoses can remain attached to the pump.

  6. Remove the power steering pump mounting bracket and set aside.
  7. Remove the power steering pump mounting bracket stud from the cylinder head.
  8. Remove the intake manifold. Refer to Lower Intake Manifold Replacement .
  9. Remove the exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side in Engine Exhaust.

    10. Object Number: 363401 Size: SH
  10. Remove the ground wires at the rear of the left cylinder head.
  11. Remove the A/C pipe bracket nut, if equipped.
  12. Remove the fuel pipe bracket bolt at the rear of the cylinder head.
  13. Remove the valve push rods. Refer to Valve Rocker Arm and Push Rod Replacement .
  14. Remove the cylinder head and the gasket. Refer to Cylinder Head Removal - Left Side in Engine Unit Repair.
  15. Clean the engine block and the cylinder head sealing surfaces.

    16. Notice: Clean all dirt, debris, and coolant from the engine block cylinder head bolt holes. Failure to remove all foreign material may result in damaged threads, improperly tightened fasteners or damage to components.

  16. Clean the cylinder head bolts and the engine block bolt holes.
  17. For further service to the cylinder head refer to the following:
    18. •  Cylinder Head Disassemble in Engine Unit Repair.
    •  Cylinder Head Cleaning and Inspection in Engine Unit Repair.
    •  Valve Guide Reaming, and Valve and Seat Grinding in Engine Unit Repair.
    •  Cylinder Head Assemble in Engine Unit Repair.

Installation Procedure
  1. Install the cylinder head. Refer to Cylinder Head Installation - Left Side in Engine Unit Repair.
  2. Install the valve push rods. Refer to Valve Rocker Arm and Push Rod Replacement .

    3. Object Number: 363401 Size: SH

    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 ground wires and bolt at the rear of the left cylinder head.

    4. Tighten
    Tighten the ground wire bolt to 35 N·m (26 lb ft).

  4. Install the fuel pipe bracket and stud at the rear of the cylinder head.

    5. Tighten
    Tighten the fuel pipe bracket stud to 33 N·m (24 lb ft).

  5. Install the A/C pipe bracket and nut, if equipped.

    6. Tighten
    Tighten the A/C pipe bracket nut to 35 N·m (26 lb ft).

  6. Install the exhaust manifold. Refer to Exhaust Manifold Replacement - Left Side in Engine Exhaust.
  7. Install the intake manifold. Refer to Lower Intake Manifold Replacement .

    8. Object Number: 475833 Size: SH
  8. Install the stud for the power steering pump mounting bracket to the cylinder head.

    9. Tighten
    Tighten the power steering pump mounting bracket stud to 20 N·m (15 lb ft).

  9. Install the power steering pump mounting bracket.

    10. Object Number: 288833 Size: SH
  10. Install the nut holding the power steering pump rear bracket to the engine.

    11. Tighten
    Tighten the power steering pump rear bracket nut to 41 N·m (30 lb ft).

  11. Install the air conditioning compressor. Refer to Air Conditioning Compressor Replacement in Heating, Ventilation and Air Conditioning.
  12. Install the engine cooling fan. Refer to Fan Replacement in Engine Cooling.
  13. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  14. Install the engine cover. Refer to Engine Cover Replacement in Interior Trim.