Removal Procedure
- Disconnect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
in Engine Electrical.
- Drain the cooling system. Refer to
Cooling System Draining and Filling
in Engine Cooling.
- Drain the engine oil. Refer to
Engine Oil and Oil Filter Replacement
.
- Remove the coolant recovery reservoir. Refer to
Coolant Recovery Reservoir Replacement
in Engine Cooling.
- Remove the crankshaft balancer. Refer to
Crankshaft Balancer Replacement
.
- Remove the drive belt tensioner. Refer to
Drive Belt Tensioner Replacement
.
- Remove the power steering pump with lines. Move the power steering pump aside. Refer to
Power Steering Pump Replacement
in Power Steering System.
- Remove the thermostat bypass pipe from the engine front cover. Refer to
Thermostat Bypass Pipes Replacement
in Engine Cooling.
- Remove the radiator outlet hose from the coolant pump. Refer to
Radiator Outlet Hose Replacement
in Engine Cooling.
- Remove the drive belt shield bolt and the shield.
- Remove the water pump pulley bolts.
- Remove the water pump pulley.
- Disconnect the crankshaft position sensor electrical connector.
- Remove the lower crankshaft position sensor wiring harness bracket bolt and the bracket from the engine front cover.
- Remove the engine front cover bolts (1,2,3).
- Remove the engine front cover.
- Remove the engine front cover gasket.
- Clean the engine front cover and engine block gasket mating surfaces.
- Inspect the engine front cover for damage to the engine front cover, crankshaft front oil seal or the gasket mating surface.
- If replacing the engine front cover, remove the crankshaft position sensor from the engine front cover. Refer to
Crankshaft Position Sensor Replacement
in Engine Controls - 3.1L.
- If replacing the engine front cover, remove the water pump from the engine front cover. Refer to
Water Pump Replacement
in Engine Cooling.
Installation Procedure
- If removed, install the water pump to the engine front cover. Refer to
Water Pump Replacement
in Engine Cooling.
- If removed, install the crankshaft position sensor to the engine front cover. Refer to
Crankshaft Position Sensor Replacement
in Engine Controls - 3.1L.
- Coat both sides of the lower tabs of the engine front cover gasket with sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent.
- Install the engine front cover gasket.
- Install the engine front cover.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the engine front cover bolts (1, 2, 3).
Tighten
• | Tighten the small engine front cover bolts (1) to 27 N·m (20 lb ft). |
• | Tighten the large engine front cover bolts (2,3) to 55 N·m (41 lb ft). |
- Install the lower crankshaft position sensor wiring harness bracket and the bolt to the engine front cover.
Tighten
Tighten the bolt to 27 N·m (20 lb ft).
- Connect the crankshaft position sensor electrical connector.
- Install the drive belt shield.
- Install the drive belt shield bolt.
Tighten
Tighten the bolt to 10 N·m (89 lb in).
- Install the water pump pulley.
- Install the water pump pulley bolts.
Tighten
Tighten the bolts to 25 N·m (18 lb ft).
- Install the radiator outlet hose to the coolant pump. Refer to
Radiator Outlet Hose Replacement
in Engine Cooling.
- Install the thermostat bypass pipe to the engine front cover. Refer to
Thermostat Bypass Pipes Replacement
in Engine Cooling.
- Install the power steering pump with lines. Refer to
Power Steering Pump Replacement
in Power Steering System.
- Install the drive belt tensioner. Refer to
Drive Belt Tensioner Replacement
.
- Install the crankshaft balancer. Refer to
Crankshaft Balancer Replacement
.
- Fill the crankcase with new engine oil. Refer to
Engine Oil and Oil Filter Replacement
.
- Fill the cooling system. Refer to
Cooling System Draining and Filling
in Engine Cooling.
- Connect the negative battery cable. Refer to
Battery Negative Cable Disconnection and Connection
in Engine Electrical.
- Perform a CKP system variation learn procedure. Refer to
Crankshaft Position System Variation Learn
in Engine Controls - 3.1L.