Chevrolet Silverado / GMC Sierra. Manual — part 2125

Fig. 48: Removing/Installing Piston Rings
Courtesy of GENERAL MOTORS CORP.

5. Using piston ring pliers, install the piston rings onto the piston. The dimple or mark on the

piston ring should face the top of the piston. If no dimple or mark can be found on the top

IMPORTANT: When installing piston rings, use a ring expander plier type

tool. Do not roll the rings into the grooves of the piston. Use
caution and care to expand the rings only slightly larger than
the outside diameter (OD) of the piston.

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

compression ring, it may be installed in either direction.

6. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.

7. Position the compression ring end gaps 180 degrees opposite each other.

Fig. 49: View Of Piston, Connecting Rod & Bearing Assembly
Courtesy of GENERAL MOTORS CORP.

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

8. Install the connecting rod bearings to the rod and cap.

CAMSHAFT BEARING REMOVAL

Tools Required

J 33049 Camshaft Bearing Service Set

Removal

Fig. 50: Camshaft Bearings
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: A loose camshaft bearing may be caused by an enlarged, out

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