Cylinder Head Replacement - Left

The cylinder head torque specification in this article has been updated with information from the GM Service Information website

Cylinder Head Replacement- Left

- Tools Required
- J 36660-A Torque Angle Meter

Removal Procedure







1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Drain the cooling system.
3. Drain the engine oil.
4. Lower the vehicle.
5. Remove the lower intake manifold.
6. Remove the valve rocker arms and the pushrods.
7. Remove the exhaust crossover pipe.
8. Remove the right engine mount strut bracket.
9. Remove the oil level indicator tube.
10. Remove the left spark plug wires from the spark plugs.
11. Remove the left spark plugs.
12. Remove the left exhaust manifold.
13. Remove the left cylinder head bolts.
14. Remove the left cylinder head.







15. Remove the left cylinder head gasket.
16. Clean the following areas:
- The gasket mating surfaces on the cylinder head, cylinder block, and intake manifolds.
- The cylinder block bolt threads.
- The cylinder head bolts.

17. Clean and inspect the cylinder head.




Installation Procedure







1. Install a new left cylinder head gasket.







2. Install the left cylinder head over the locator pins and over the gasket.





3. Install the cylinder head bolts.
- Tighten the bolts to 60 Nm (44 ft. lbs.) in the sequence shown.
- Use the J36660-A in order to tighten the bolts an additional 95 degrees.

4. Install the left exhaust manifold.
5. Install the left spark plugs.
6. Install the left spark plug wires to the spark plugs.
7. Install the oil level indicator tube.
8. Install the right engine mount strut bracket.
9. Install the exhaust crossover pipe.
10. Install the valve rocker arms and pushrods.
11. Install the lower intake manifold.
12. Fill the crankcase with engine oil.
13. Fill the cooling system.
14. Inspect for leaks.