Cylinder Head Replacement - Right

Cylinder Head Replacement - Right

Tools Required
^ J45059 Angle Meter

Removal Procedure





1. Drain the cooling system.
2. Remove the intake manifold.
3. Remove the valve rocker arms and pushrods.
4. Remove the Engine Coolant Temperature (ECT) sensor clip from the bracket.
5. Remove the ECT sensor from the cylinder head.





6. Remove the indicator tube bolt.
7. Remove the indicator tube bracket.
8. Remove the O-ring seal from the indicator tube.





9. Remove the heater inlet and outlet hoses from the hose bracket.
10. Remove the heater hose bracket bolts and bracket from the cylinder head.
11. Remove the water crossover.
12. Remove the exhaust manifold.





13. Remove and discard the cylinder head bolts (1, 2, and 3).





14. Important: Place the cylinder head on two wood block to prevent damage to the sealing surface.

Remove the cylinder head.





15. Remove and discard the cylinder head gasket.
16. Clean and inspect the cylinder head.

Installation Procedure

Important: Make sure the threaded holes in the engine block are clean and not damaged. Do not use sealer on any engines that use a composition type gasket. Align the cylinder head gasket locating mark to face up. Ensure that the head gasket tabs are located over the numbers 1 and 2 cylinders for correct installation.





1. Place a NEW cylinder head gasket into position.





2. Install the cylinder head.





3. Notice: Do not reuse the cylinder head bolts. NEW cylinder head bolts must be used. The cylinder head bolts are torque-to-yield bolts and cannot be reused once the initial torque is applied. During the initial torque of the cylinder head bolt the cylinder head bolt is stretched to achieve proper clamp load. Proper clamp load will not be achieved if a used cylinder head bolt is torqued again. A stretched cylinder head bolt can also break when torqued. Failure to replace the used cylinder head bolts with NEW cylinder head bolts can lead to improper clamp loads and extensive engine damage.

Important: The sealer must be applied to a minimum of eight threads starting at the point of the cylinder head bolt.

If not pre-applied to the new cylinder heads bolts, apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the cylinder head bolts.
4. Install the cylinder head bolts (1, 2, and 3).





5. Notice: Refer to Fastener Notice in Service Precautions.

Important: The long bolts are used in locations 1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, and 17. The medium length bolts are used in locations 15 and 18. The short bolts are used in locations 4, 5, 12, and 13.

Tighten the cylinder head bolts.
1. Tighten the cylinder head bolts a first pass in sequence to 30 Nm (22 ft. lbs.).
2. Tighten the cylinder head bolts a second pass in sequence to 30 Nm (22 ft. lbs.) then an additional 120 degrees using J45059.
3. Tighten the bolts (1, 2, 3, 6, 7, 8, 9, 10, 11, 14, 16, and 17) an additional 60 degrees, bolts (15, and 18) an additional 45 degrees, and bolts (4, 5, 12, and 13) an additional 30 degrees a final pass using J45059.

6. Install the exhaust manifold.
7. Install the water crossover.





8. Install the heater hose bracket and bolts to the cylinder head.
Tighten the heater hose bracket bolts to 50 Nm (37 ft. lbs.).
9. Install the heater inlet and outlet hoses to the hose bracket.





10. Install a NEW O-ring seal onto the indicator tube.
11. Install the indicator tube into the oil pan.
12. Align the indicator tube bracket with the bolt hole in the block.
13. Install the indicator tube bolt.
Tighten the bolt to 25 Nm (18 ft. lbs.).





14. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent to the threads of the ECT sensor.
15. Install the ECT sensor to the cylinder head.
Tighten the ECT sensor to 50 Nm (37 ft. lbs.).
16. Install the ECT sensor clip to the bracket.
17. Install the valve rocker arms and pushrods.
18. Install the intake manifold.
19. Drain the cooling system.