GM Service Manual Online
For 1990-2009 cars only

Cylinder Head Replacement Left

Removal Procedure


    Object Number: 379365  Size: SH
  1. Remove the engine coolant air bleed pipe. Refer to Vapor Vent Pipe Replacement .
  2. Remove the power steering pump rear bracket. Refer to Power Steering Pump Rear Bracket Replacement in Power Steering System.
  3. Remove the left side exhaust manifold. Refer to Exhaust Manifold Replacement .
  4. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  5. Remove the harness ground bolts (2 and 3) from the rear of the cylinder head.

  6. Object Number: 260146  Size: SH
  7. Remove the left side cylinder head. Refer to Cylinder Head Removal .

Installation Procedure


    Object Number: 260146  Size: SH
  1. Install the left side cylinder head. Refer to Cylinder Head Installation .

  2. Object Number: 379365  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 harness ground bolts to the cylinder head.
  4. Tighten
    Tighten the harness ground bolts (2 and 3) to 50 N·m (37 lb ft).

  5. Install the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  6. Install the left side exhaust manifold. Refer to Exhaust Manifold Replacement .
  7. Install the power steering pump rear bracket. Refer to Power Steering Pump Rear Bracket Replacement in Power Steering.
  8. Install the engine coolant air bleed pipe. Refer to Vapor Vent Pipe Replacement .

Cylinder Head Replacement Right

Removal Procedure


    Object Number: 346049  Size: SH
  1. Remove the engine coolant air bleed pipe. Refer to Vapor Vent Pipe Replacement .
  2. Remove the right side exhaust manifold. Refer to Exhaust Manifold Replacement .
  3. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  4. Remove the engine wiring harness clip bolt from the cylinder head.

  5. Object Number: 208459  Size: SH
  6. Remove the transmission fill tube bolt from the cylinder head.

  7. Object Number: 260149  Size: SH
  8. Remove the right side cylinder head. Refer to Cylinder Head Removal .

Installation Procedure


    Object Number: 260149  Size: SH
  1. Install the right side cylinder head. Refer to Cylinder Head Installation .

  2. Object Number: 208459  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 transmission fill tube bolt to the cylinder head.
  4. Tighten
    Tighten the transmission fill tube bolt to 47 N·m (35 lb ft).


    Object Number: 346049  Size: SH
  5. Install the engine wiring harness clip bolt to the rear of the cylinder head.
  6. Tighten
    Tighten the engine wiring harness clip bolt to 50 N·m (37 lb ft).

  7. Install the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  8. Install the right side exhaust manifold. Refer to Exhaust Manifold Replacement .
  9. Install the engine coolant air bleed pipe. Refer to Vapor Vent Pipe Replacement .