Sealant Replacement - Lower Crankcase to Engine Block

Sealant Replacement - Lower Crankcase to Engine Block

Tools Required

J 45059 Angle Meter

Removal Procedure




1. Remove the starter motor.
2. Remove the engine-to-transaxle brace.
3. Remove the engine oil pan.
4. Remove the crankshaft position sensor.
5. Remove the 3 perimeter bolts.

Important: Do not forget the 2 outside rear bolts.

6. Remove and discard the crankshaft bearing bolts.
7. Using the pry points and an appropriate prying tool, gently separate the upper and lower crankcase.
8. Clean the sealing material from the engine block and lower the crankcase.

Installation Procedure

1. Apply oil to the crankshaft bearing surfaces.




2. Apply a 2-5 mm (0.08-0.20 in) bead (a) of sealer GM P/N 12378521 (Canadian P/N 88901148) to the surface of the engine block-to-lower crankcase mating surface.




3. Install the lower crankcase.
Tap gently into place with a suitable tool, if necessary. Ensure it is aligned properly on the dowels.





Notice: Refer to Fastener Notice.

4. Install the NEW crankshaft bearing bolts in sequence finger tight.
1. Tighten the crankshaft bearing bolts in sequence.

Tighten the crankshaft bearing bolts to 20 N.m (15 lb ft).

2. Tighten the crankshaft bearing bolts in sequence using the J 45059.

Tighten the crankshaft bearing bolts to 70 degrees using the J 45059.




5. Tighten the lower crankcase perimeter bolts in sequence.

Tighten the lower crankcase perimeter bolts to 25 N.m (18 lb ft).

6. Install the crankcase position sensor.
7. Install the engine oil pan.
8. Install the engine-to-transaxle brace.

Tighten the bolts to 72 N.m (53 lb ft).

9. Install the starter motor.
10. Lower the vehicle.
11. Fill with engine oil, start the engine and inspect for leaks.