GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 2006 🢒 Montana SV6 - AWD 🢒 Engine 🢒 Engine Mechanical - 3.5L 🢒 Cylinder Head Replacement - Right Side

Special Tools

J 45059 Angle Meter

Removal Procedure
  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
  2. Drain the cooling system. Refer to Cooling System Draining and Filling.
  3. Drain the engine oil. Refer to Engine Oil and Oil Filter Replacement .
  4. Lower the vehicle.
  5. Remove the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  6. Remove the valve rocker arms and pushrods. Refer to Valve Rocker Arm and Push Rod Replacement .
  7. Remove the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement .
  8. Remove the right spark plug wires from the spark plugs. Refer to Spark Plug Wire Replacement.
  9. Remove the right spark plugs. Refer to Spark Plug Replacement.
  10. Remove the generator. Refer to Generator Replacement.
  11. Remove the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side.

    12. Object Number: 190596 Size: SH
  12. Remove the right cylinder head bolts and discard.
  13. Remove the right cylinder head.

    14. Object Number: 190597 Size: SH
  14. Remove the right cylinder head gasket.
  15. Clean and inspect the cylinder head and the gasket mating surfaces. Refer to Engine Block Cleaning and Inspection and Cylinder Head Cleaning and Inspection .

Installation Procedure

    Object Number: 190597 Size: SH
  1. Install a new right cylinder head gasket.

    2. Object Number: 190596 Size: SH
  2. Install the right cylinder head over the locator pins and the gasket.

    3. Notice: Refer to Fastener Notice in the Preface section.


    Object Number: 826677 Size: SH
  3. Install the NEW small hex cylinder head bolts (5 and 8).
  4. Install the NEW large hex cylinder head bolts (1, 2, 3, 4, 6 and 7).

    5. Tighten

    1. Tighten the cylinder head bolts a first pass in sequence to 60 N·m (44 lb ft).
    2. Tighten the cylinder head bolts a final pass in sequence to 140 degrees using the J 45059 .
  5. Install the right exhaust manifold. Refer to Exhaust Manifold Replacement - Right Side .
  6. Install the generator. Refer to Generator Replacement.
  7. Install the right spark plugs. Refer to Spark Plug Replacement.
  8. Install the right spark plug wires to the spark plugs. Refer to Spark Plug Wire Replacement.
  9. Install the exhaust crossover pipe. Refer to Exhaust Crossover Pipe Replacement .
  10. Install the pushrods and valve rocker arms. Refer to Valve Rocker Arm and Push Rod Replacement .
  11. Install the lower intake manifold. Refer to Lower Intake Manifold Replacement .
  12. Fill the crankcase with engine oil. Refer to Engine Oil and Oil Filter Replacement .
  13. Fill the cooling system. Refer to Cooling System Draining and Filling.
  14. Inspect for leaks.