Tools Required

J 37228 Seal Cutter

1. Disconnect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
2. Remove the cooling layer. Refer to Cooling Layer Removal in Engine Cooling.
3. Remove the fan clutch.
4. Remove the oil fill tube. Refer to Oil Filler Tube Replacement .
5. Remove the thermostat housing crossover. Refer to Thermostat Housing Crossover Replacement in Engine Cooling.
6. Remove the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
7. Remove the crankshaft front oil seal. Refer to Crankshaft Front Oil Seal Replacement .
8. Remove the water pump. Refer to Water Pump Replacement in Engine Cooling.



9. Disconnect the camshaft sensor electrical connector.
10. Remove the camshaft sensor bolt and sensor.



11. Disconnect the crankshaft sensor connector.
12. Remove the crankshaft sensor bolt and sensor.
13. Remove the crankshaft position sensor spacer bolts.
14. Remove the crankshaft position sensor spacer.



15. Remove the 5 bolts retaining the upper oil pan to the engine front cover.



16. Remove the bracket bolts and the bracket for the turbocharger outlet coolant pipe.



17. Remove the 13 bolts for the engine front cover.
18. Using the J 37228 separate the engine front cover from the cylinder block and the upper oil pan.

Important: Do not bend the turbocharger coolant pipe.

19. Remove the engine front cover.
20. Remove the O-ring from the engine front cover.



21. Remove the oil pressure relief valve from the engine front cover.
22. Clean the engine front cover with a suitable cleaning solvent.
23. Clean the engine front cover and the engine mating surfaces.
24. Inspect the engine front cover mating surfaces for damage.
25. Inspect the engine front cover O-ring sealing surfaces for damage.
26. Replace the engine front cover if any damage is found.

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.

1. Install the oil pressure relief valve with a new O-ring seal in the engine front cover.

Tighten
Tighten the oil pressure relief valve to 41 N·m (30 lb ft).




2. Apply a 2-3 mm (1/8 in) wide to 0.5-1.5 mm (1/16 in) high bead of sealant GM P/N 12378521 or equivalent to the engine front cover sealing surface to the engine block.
3. Apply a 2-3 mm (1/8 in) wide to 0.5-1.5 mm (1/16 in) high bead of sealant GM P/N 12378521 or equivalent to the engine front cover sealing surface to the upper oil pan.



4. Install the new O-ring (1) in the front cover.

Lubricate the O-ring with clean engine oil.




5. Install the engine front cover.
6. Install the engine front cover with 13 bolts.

Tighten
Tighten the front cover bolts to 21 N·m (15 lb ft).




7. Install the 5 bolts retaining the upper oil pan to the engine front cover.

Tighten
Tighten the upper oil pan front cover bolts to 21 N·m (15 lb ft).




8. Install the turbocharger coolant outlet pipe bracket and bolts.

Tighten
Tighten the turbocharger coolant outlet pipe bracket bolts to 21 N·m (15 lb ft).




9. Install the camshaft sensor bolt and sensor.

Tighten
Tighten the camshaft sensor bolt to 9 N·m (80 lb in).

10. Connect the camshaft sensor electrical connector.




Important: The crankshaft position sensor spacers are machined with different timing positions. If the spacer requires replacement, replace with the same part number.

11. Install the crankshaft position sensor spacer.
12. Install the crankshaft position sensor spacer bolts

Tighten
Tighten the crankshaft position sensor spacer bolts to 10 N·m (89 lb in).

13. Install the crankshaft position sensor.
14. Install the crankshaft position sensor bolt.

Tighten
Tighten the crankshaft position sensor bolt to 10 N·m (89 lb in).

15. Install the water pump. Refer to Water Pump Replacement in Engine Cooling.
16. Install the crankshaft front oil seal. Refer to Crankshaft Front Oil Seal Replacement .
17. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement .
18. Install the thermostat housing crossover. Refer to Thermostat Housing Crossover Replacement in Engine Cooling.
19. Install the oil fill tube. Refer to Oil Filler Tube Replacement .
20. Install the cooling layer. Refer to Cooling Layer Installation in Engine Cooling.
21. Connect the battery negative cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.