Chevrolet Silverado / GMC Sierra. Service manual — part 575

Fig. 185: Crankshaft Bearing Cap Bolts Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

8. Install the crankshaft bearing cap bolts.

9. Tighten the crankshaft bearing cap bolts in the proper sequence.

Tighten:

1st step 98 N.m (72 lb ft).

2nd step 132 N.m (97 lb ft).

NOTE:

Refer to Fastener Notice .

2008 Chevrolet Silverado 1500

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

3rd step 30 degrees using J 45059 .

Fig. 186: Crankshaft Bearing Cap Side Bolts Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

10. Install the crankshaft bearing cap side bolts.

Tighten: Tighten the crankshaft bearing cap side bolts in the proper sequence to 70 N.m
(52 lb ft).

11. Remove the crankshaft bearing cap bolts.

12. Remove the crankshaft bearing caps.

2008 Chevrolet Silverado 1500

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

Fig. 187: Measuring Compressed Width
Courtesy of GENERAL MOTORS CORP.

13. Compare the width of the plastic gauge with the scale printed on the plastic gauge container.

14. Select the crankshaft bearing grade that provides the proper oil clearances. The production

specification for crankshaft bearing clearance is 0.039-0.070 mm (0.0015-0.0028 in) and
the service limit is 0.014 mm (0.0055 in).

CRANKSHAFT BALANCER CLEANING AND INSPECTION

2008 Chevrolet Silverado 1500

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

Fig. 188: View Of Crankshaft Balancer Inspection Area
Courtesy of GENERAL MOTORS CORP.

1. Clean the crankshaft balancer.

2. Inspect the crankshaft balancer for damage to belt drive surface and to crankshaft balancer

hub.

3. Inspect the balancer hub groove for damage or wear.

2008 Chevrolet Silverado 1500

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