Installation Procedure

WARNING: This page is about a different car, the 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Crankshaft Bearing Inserts

Courtesy of GENERAL MOTORS CORP.

Install the upper crankshaft bearings and lubricate bearing surfaces with engine oil.

Fig 2: Installing Crankshaft On Journals

Courtesy of GENERAL MOTORS CORP.

Install the crankshaft on the journals.

Fig 3: Identifying Crankshaft Bearing Inserts

Courtesy of GENERAL MOTORS CORP.

Install the lower bearing halves, without grooves, into the lower crankcase. Apply oil to bearing surfaces.

Fig 4: Applying Sealer To Surfaces Of Engine Block To Bedplate Mating Surfaces

Courtesy of GENERAL MOTORS CORP.

Apply sealer GM P/N 12378521 (Canadian P/N 88901148) to the surfaces of the engine block to bedplate mating surfaces.

Fig 5: View Of Upper & Lower Crankcase W/Bolts

Courtesy of GENERAL MOTORS CORP.

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

Fig 6: Identifying Crankshaft Bearing Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice .

Install the NEW crankshaft bearing bolts in sequence finger tight.
Tighten:
1. Tighten the crankshaft bearing bolts in sequence to 20 N.m (15 lb ft).
2. Using the J 45059 , tighten the crankshaft bearing bolts in sequence to 77 degrees. See Special Tools .

Fig 7: Lower Crankcase Perimeter Bolt Tightening Sequence

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Do not forget the 2 rear outer bolts.

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