Chevrolet Silverado / GMC Sierra. Manual — part 647

2. Install the J 44642 to the crankshaft. See Special Tools .

3. Press the crankshaft rear oil seal into position using the J 44642 . See Special Tools . The J

44642 will bottom out when the seal reaches the proper depth. See Special Tools .

4. Remove the J 44642 . See Special Tools .

ENGINE FLYWHEEL INSTALLATION (AUTOMATIC TRANSMISSION)

Tools Required

J 44643 Flywheel Hold Tool. See Special Tools .

J 45059 Angle Meter

Installation

Fig. 116: View Of Flywheel & Washer (Automatic)
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

1. Install the flywheel to the crankshaft.

2. Install the flywheel washer to the flywheel with the beveled side facing the engine.

3. Install NEW flywheel bolts.

NOTE:

This component uses bolts with a preapplied molybdenum
disulfide coating for thread lubrication. Do not remove the
coating or use any additional lubricant. Improperly lubricated
threads will adversely affect the bolt torque and clamp load.
Improper bolt torque and clamp load can lead to engine
damage.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 117: Locking Flywheel Using J 44643
Courtesy of GENERAL MOTORS CORP.

4. Install the J 44643 to lock the flywheel. See Special Tools .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado

Fig. 118: Flywheel Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

5. Tighten the flywheel bolts in the proper sequence.

Tighten:

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 6.6L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado