Removal Procedure
- Disconnect the battery negative cable. Refer to
Battery Cable Replacement
- Disconnect the PCV hose from the air cleaner outlet duct.
- Remove the air cleaner outlet duct from the throttle body and
the air cleaner assembly. Refer to
Air Cleaner Outlet Duct Replacement
in Engine Controls.
- Drain the cooling system. Refer to
Cooling System Draining and Filling
in Engine Cooling.
- Discharge the air condition system, if equipped. Refer to Refrigerant Recovery and Recharging
in HVAC Systems
with A/C - Manual.
- Remove the radiator. Refer to
Radiator Replacement
in Engine Cooling.
- Remove the A/C condenser, if equipped. Refer to
Condenser Replacement
in HVAC Systems with A/C - Manual.
- Remove the valve rocker arm covers. Refer to
Valve Rocker Arm Cover Replacement
.
- Remove the intake manifold. Refer to
Intake Manifold Replacement
.
- Remove the valve lifters and the valve pushrods. Refer to
Valve Rocker Arm and Push Rod Replacement
.
- Remove the engine front
cover. Refer to
Engine Front Cover Replacement
.
- Remove the crankshaft position sensor reluctor ring. Refer to
Crankshaft Position Sensor Reluctor Ring Replacement
.
- Remove the timing chain and camshaft sprocket. Refer to
Timing Chain and Sprocket Replacement
.
- Remove the balance shaft drive gear.
- Remove the camshaft. Refer
to Camshaft Removal
.
Installation Procedure
Important: Whenever a new camshaft is installed, do the following procedures:
• | Change the engine oil. |
• | Change the engine oil filter. |
• | Add GM Engine Oil Supplement GM P/N 1052367 or
the equivalent to the engine oil. |
- Install the camshaft into the engine block. Refer to Camshaft Installation
.
- Install the balance shaft
drive gear. Refer to Balance Shaft Installation
for alignment of the balance shaft drive gear and the driven gear.
- Line up the timing marks
on the camshaft sprocket and the crankshaft sprocket dot to dot. When these
dots are lined up dot to dot, the number four cylinder is at the
top dead center of its compression stroke.
- Install the camshaft timing chain and camshaft sprocket. Refer
to
Timing Chain and Sprocket Replacement
.
Notice: Failure to properly align the crankshaft position sensor reluctor ring
may result in component damage and effect OBD II system performance.
- Install the crankshaft position sensor reluctor ring. Refer to
Crankshaft Position Sensor Reluctor Ring Replacement
.
- Install the valve lifters and the valve pushrods. Refer to
Valve Lifter Replacement
.
- Install the engine front cover. Refer to
Engine Front Cover Replacement
.
- Install the intake manifold. Refer to
Intake Manifold Replacement
.
Important: When the alignment marks on the camshaft sprocket and the crankshaft
sprocket are aligned the engine is at cylinder number four top dead center.
- Rotate the engine to align the crankshaft balancer marks (1) and (4)
with the front cover marks (2) and (3) for cylinder number one top dead center.
- Install the distributor. Refer to Distributor
Installation
in Engine Electrical.
- Install the valve rocker arm covers. Refer to
Valve Rocker Arm Cover Replacement
.
- Install the A/C condenser, if equipped. Refer to
Condenser Replacement
in HVAC Systems with A/C
- Manual.
- Install the radiator. Refer to
Radiator Replacement
in Engine Cooling.
- Fill the cooling system with the proper grade and quantity of
engine coolant. Refer to
Cooling System Draining and Filling
in Engine Cooling.
- Recharge the air conditioning system, if equipped. Refer to Refrigerant Recovery and Recharging
in HVAC Systems
with A/C - Manual.
- Install the air cleaner outlet duct to the throttle body and the
air cleaner assembly. Refer to
Air Cleaner Outlet Duct Replacement
in Engine Controls.
- Connect the PCV hose to the air cleaner outlet duct.
- Connect the battery negative cable. Refer to
Battery Cable Replacement
in Engine Electrical.