Chevrolet Silverado / GMC Sierra. Service manual — part 2164

1. Install the crankshaft bearings to the engine block and bearing caps. The thrust bearings are

to be installed into center journal.

2. Lubricate the bearing surfaces and crankshaft journals with clean engine oil.

diagnostic (OBD) II system performance.

Crankshaft bearing caps must be installed to the proper
location and direction.

When installing the crankshaft bearings, align the
locating tabs on the bearings with the locating notches
in the engine block journal bore and the bearing cap.

Always install crankshaft bearings with their machined
partner. Do not file bearings or mix bearing halves.

In order to prevent engine block oil leakage, install NEW
M8 crankshaft bearing cap side bolts.

The crankshaft bearing cap M8 side bolts have a pre-
applied sealant patch applied to the bolt flange.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 173: View Of Crankshaft & Engine Block
Courtesy of GENERAL MOTORS CORP.

3. Install the crankshaft.

NOTE:

To maintain proper crankshaft end play, use extreme care
during crankshaft installation. Avoid scoring or damaging the
thrust bearing.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 174: View of Proper Bearing Cap Installation
Courtesy of GENERAL MOTORS CORP.

4. Install the crankshaft bearing caps, with bearings, into the engine block.

IMPORTANT: The bearing caps must be installed in the proper location and

direction.

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado

Fig. 175: Identifying Bearing Cap Bolts & Studs
Courtesy of GENERAL MOTORS CORP.

5. Install the M10 bolts (129) and studs (128).

6. Using a plastic-face hammer, tap the bearing caps into place.

7. Install the NEW M8 bearing cap side bolts (127).

2008 Chevrolet Silverado 1500

2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado,

Sierra & Silverado