Chevrolet Silverado / GMC Sierra. Service manual — part 529

Fig. 2: Locking Flywheel Using J 44643
Courtesy of GENERAL MOTORS CORP.

1. Install the J 44643 to the starter opening in order to hold the flywheel. See Special Tools .

Fig. 3: Accessing Flywheel To Crankshaft Bolts
Courtesy of GENERAL MOTORS CORP.

2. Install two bolts into the clutch pressure plate mounting holes 180 degrees apart.

3. Using a long pry bar, turn the secondary ring of the dual mass flywheel clockwise until the

flywheel mounting bolts can be accessed. It may require to turn the secondary ring past the
bolt holes in order to compensate the spring tension.

IMPORTANT: Do not use the clutch pressure plate bolts. Use a bolt of the

correct thread and a length that protrudes enough to use a
pry bar.

2008 Chevrolet Silverado 1500

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

Fig. 4: View Of Flywheel & Mounting Bolts (Manual)
Courtesy of GENERAL MOTORS CORP.

4. Remove the flywheel mounting bolts and discard.

5. Remove the J 44643 . See Special Tools .

6. Remove the flywheel.

CRANKSHAFT REAR OIL SEAL REMOVAL

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.

2008 Chevrolet Silverado 1500

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

Tools Required

J 44641 Crankshaft Rear Oil Seal Remover. See Special Tools .

Removal

Fig. 5: Removing Crankshaft Rear Oil Seal Using J 44641
Courtesy of GENERAL MOTORS CORP.

1. Install the J 44641 to the crankshaft rear oil seal. See Special Tools .

2008 Chevrolet Silverado 1500

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

2. Remove the crankshaft rear oil seal using J 44641 . See Special Tools .

EXHAUST OUTLET REMOVAL

Fig. 6: View Of Exhaust Outlet Shield
Courtesy of GENERAL MOTORS CORP.

1. Remove the exhaust outlet heat shield bolts.

2. Remove the exhaust outlet heat shield.

3. Remove the exhaust outlet to right exhaust pipe bracket bolt.

2008 Chevrolet Silverado 1500

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