Chevrolet Silverado / GMC Sierra. Service manual — part 648

1st step 79 N.m (59 lb ft).

2nd step 60 degrees using J 45059 .

3rd step 60 degrees using J 45059 .

ENGINE FLYWHEEL INSTALLATION (MANUAL TRANSMISSION)

Tools Required

J 44643 Flywheel Hold Tool. See Special Tools .

J 45059 Angle Meter

Installation

Fig. 119: View Of Engine Flywheel Pilot Bearing
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 pilot bearing.

Fig. 120: View Of Flywheel & Mounting Bolts (Manual)
Courtesy of GENERAL MOTORS CORP.

2. Install the flywheel.

CAUTION: When removing, handling or installing this component

wear protective gloves. The sharp edges on the
component may be very sharp and may cause injury.

NOTE:

This component uses bolts with a preapplied molybdenum

2008 Chevrolet Silverado 1500

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

3. Loosely install NEW flywheel bolts.

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.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

Fig. 121: Locking Flywheel Using J 44643 (Manual Transmission)
Courtesy of GENERAL MOTORS CORP.

4. Install J 44643 to hold the flywheel from rotating. See Special Tools .

Fig. 122: Flywheel Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

2008 Chevrolet Silverado 1500

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