For 1990-2009 cars

#### Tools Required

J 36660-A Torque Angle Meter

Important: Ensure that the crankshaft bearing cap bolt holes and the crankshaft bearing cap mating surfaces are clean and dry.

1. Dip the crankshaft bearing cap bolts in clean engine oil.

Notice: Upper and lower inserts may be different. Do not obstruct any oil passages.

2. Place the crankshaft bearing inserts into the crankshaft bearing cap and into the engine block.

Important: The crankshaft bearing inserts will project slightly when put into place. Ensure that the bearing inserts project an equal distance on both sides. Ensure that the insert tangs are engaged.

3. Coat the crankshaft main thrust bearing surface with GM EOS P/N 1052368 or the equivalent.
4. Lubricate the crankshaft main bearing surface with clean engine oil.
5. Install the crankshaft.

Notice: In order to prevent the possibility of cylinder block or crankshaft bearing cap damage, the crankshaft bearing caps are tapped into the cylinder block cavity using a brass, lead, or a leather mallet before the attaching bolts are installed. Do not use attaching bolts to pull the crankshaft bearing caps into the seats. Failure to use this process may damage a cylinder block or a bearing cap.

6. Install the crankshaft main bearing caps. Apply a small amount of sealer GM P/N 1052942 to the rear of the #4 crankshaft main bearing cap sealing surface.

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.

7. Install the crankshaft main bearing cap bolts.

Tighten
Use the J 36660-A in order to tighten the crankshaft main bearing cap bolts to 50 N·m (37 lb ft) plus 77 degrees.

8. Measure the crankshaft end play.