GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Oldsmobile 🢒 1999 🢒 Intrigue 🢒 Engine 🢒 Engine Mechanical - 3.5L 🢒 Cylinder Head Installation

Cylinder Head Installation Left

Tools Required

    • J 36660-A Torque Angle Meter
    • J 43032 Crankshaft Rotation Socket

    Object Number: 233785 Size: SH

    Important: Ensure that the crankshaft is in the TDC position for cylinder number one using the J 43032 .

  1. Ensure the cylinder head locating pins are securely mounted in the cylinder block deck face.
  2. Install a new left cylinder head gasket using the deck face locating pins for retention.

    3. Object Number: 233787 Size: SH
  3. Align the left cylinder head with the deck face locating pins.
  4. Place the left cylinder head in position on the deck face.

    5. Important: DO NOT reuse the old M11 cylinder head bolts.

  5. Install new M11 cylinder head bolts (2).
  6. Install the M6 cylinder head bolts at the front of the left cylinder head. Install the longer M6 cylinder head bolt (1) in the outboard location as shown. Install the two shorter M6 cylinder head bolt (3) in the locations shown.

    7. Object Number: 576726 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.

  7. Tighten the M11 cylinder head bolts.

    8. Tighten

    1. Tighten the M11 cylinder head bolts a first pass in sequence to 40 N·m (30 lb ft).
    2. Tighten the M11 cylinder head bolts a second pass in sequence an additional 100 degrees using the J 36660-A .
    3. Tighten the M11 cylinder head bolts a final pass in sequence an additional 100 degrees (200 degrees total) using the J 36660-A .

    Object Number: 734604 Size: SH
  8. Tighten the long M6 cylinder head bolt (1).

    9. Tighten
    Tighten the long M6 cylinder head bolt to 12 N·m (106 lb in).

  9. Tighten the two shorter M6 cylinder head bolts (2).

    10. Tighten
    Tighten the two shorter M6 cylinder head bolts to 12 N·m (106 lb in).


    Object Number: 326359 Size: SH
  10. Place the rear torque strut bracket in position on the left cylinder head.
  11. Install the rear torque strut bracket bolts.

    12. Tighten
    Tighten the rear torque strut bracket bolts to 50N·m (37 lb ft).

Cylinder Head Installation Right

Tools Required

    • J 36660-A Torque Angle Meter
    • J 43032 Crankshaft Rotation Socket

    Object Number: 576533 Size: SH

    Important: Ensure that the crankshaft is in the TDC position using the J 43032 .

  1. Ensure the cylinder head locating pins are securely mounted in the cylinder block deck face.
  2. Install a new right cylinder head gasket using the deck face locating pins for retention.

    3. Object Number: 576528 Size: SH
  3. Align the right cylinder head with the deck face locating pins.
  4. Place the right cylinder head in position on the deck face.

    5. Important: DO NOT reuse the old M11 cylinder head bolts.

  5. Install new M11 cylinder head bolts (2).
  6. Install the M6 cylinder head bolts at the front of the right cylinder head. Install the longer M6 cylinder head bolt (1) in the outboard location as shown. Install the two shorter M6 cylinder head bolts (3) in the locations shown.

    7. Object Number: 287918 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.

  7. Tighten the M11 cylinder head bolts.

    8. Tighten

    1. Tighten the M11 cylinder head bolts a first pass in sequence to 40 N·m (30 lb ft).
    2. Tighten the M11 cylinder head bolts a second pass in sequence an additional 100 degrees using the J 36660-A .
    3. Tighten the M11 cylinder head bolts a final pass in sequence an additional 100 degrees (200 degrees total) using the J 36660-A .

    Object Number: 734605 Size: SH
  8. Tighten the long M6 cylinder head bolt (2).

    9. Tighten
    Tighten the long M6 cylinder head bolt to 12 N·m (106 lb in).

  9. Tighten the two shorter M6 cylinder head bolts (1).

    10. Tighten
    Tighten the two shorter M6 cylinder head bolts to 12 N·m (106 lb in).


    Object Number: 326337 Size: SH
  10. Install the heater outlet pipe in the engine valley.
  11. Install the heater outlet pipe front bolt in the left cylinder head.

    12. Tighten
    Tighten the heater outlet pipe front bolt to 25 N·m (18 lb ft).


    Object Number: 233205 Size: SH
  12. Install the heater outlet pipe rear bolt in the right cylinder head.

    13. Tighten
    Tighten the heater outlet pipe rear bolt to 25 N·m (18 lb ft).