Chevrolet Silverado / GMC Sierra. Service manual — part 493

Fig. 276: View Of Turbocharger Oil Return Pipe Nuts
Courtesy of GENERAL MOTORS CORP.

10. Install a NEW gasket to the turbocharger oil return pipe.

11. Install the turbocharger oil return pipe to flywheel housing nuts.

Tighten: Tighten the nuts to 21 N.m (15 lb ft).

12. Install the crankshaft rear oil seal. Refer to Crankshaft Rear Oil Seal Replacement.

13. Fill the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) or

2008 Chevrolet Silverado 1500

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

Cooling System Draining and Filling (Static Fill) .

ENGINE FLYWHEEL REPLACEMENT

Tools Required

J 44643 Flywheel Holding Tool. See Special Tools .

J 45059 Angle Meter

Removal Procedure

Fig. 277: Locking Flywheel Using J 44643

2008 Chevrolet Silverado 1500

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

Courtesy of GENERAL MOTORS CORP.

1. Remove the transmission. Refer to Transmission Replacement for the 4L60-E /4L65-

E/4L70-E transmission, Transmission Replacement for the 4L50/4L80/4L90
transmission, or Transmission Replacement for the Allison transmission.

2. Install J 44643 in order to hold the flywheel. See Special Tools .

Fig. 278: View Of Flywheel & Washer (Automatic)
Courtesy of GENERAL MOTORS CORP.

3. Remove and discard the flywheel bolts.

4. Remove the flywheel washer and 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.

2008 Chevrolet Silverado 1500

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

Installation Procedure

Fig. 279: View Of Flywheel & Washer (Automatic)
Courtesy of GENERAL MOTORS CORP.

1. Install the flywheel.

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

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.

IMPORTANT: When installing the flywheel, ensure that the tapered side of

the teeth are facing the starter.

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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