Cylinder Head Replacement - Front

This article has been updated with TSB 02-06-01-003B, 4/15/08
This bulletin is being revised to include a Notice advising that the cylinder head bolts are NOT TO BE RE-USED. Please discard Corporate Bulletin Number 02-06-01-003A.

Cylinder Head Replacement- Left

- Tool Required
- J 36660-A Torque Angle Meter

Removal Procedure

Important: During disassembly, keep the valve train components together and identified in order to install the parts in the original locations.

Perform a compression test. Record the results before you perform the following repairs:
- Remove the cylinder heads.
- Disassemble the valve mechanism.





1. Remove lower intake manifold.
2. Remove the exhaust crossover.
3. Remove the valve rocker arms and pushrods.
4. Remove oil level indicator and tube.
5. Remove the cylinder head bolts.
6. Remove the cylinder head.
7. Clean the mating surfaces of the following items:
- The cylinder head
- The cylinder block
- The intake manifold
8. Clean the cylinder block bolt threads.
9. Clean the cylinder head bolts.
10. If replacing cylinder head, remove the following components:
- Exhaust manifold
- Engine lift bracket
- Spark plugs

Installation Procedure





1. If removed, install the following components:
- Exhaust manifold
- Engine lift bracket
- Spark plugs
2. Place the cylinder head gasket into position over the dowel pins. Ensure that the THIS SIDE UP note is showing.
3. Install the cylinder head.
4. Coat the cylinder head bolt threads using GM P/N 1052080 sealer or an equivalent.

Notice: Refer to Fastener Notice in Service Precautions.

Notice: This component uses torque-to-yield bolts. When servicing this component, do not re-use the bolts. New torque-to-yield bolts must be installed. Re-using used torque-to-yield bolts will not provide proper bolt torque and clamp load. Failure to install NEW torque-to-yield bolts may lead to engine damage.





5. Install the NEW cylinder head bolts.
- Tighten the NEW cylinder head bolts to 60 Nm (44 lb ft) in the order shown. Use the J 36660-A torque angle meter in order to rotate the cylinder head bolts an additional 95 degrees.

6. Install the intake gasket.
7. Install the push rods.





8. Install the crossover pipe.





9. Install the upper and lower intake manifolds.
10. Connect the negative battery cable.
11. Install oil level indicator tube and indicator.
12. Fill the cooling system.