Chevrolet Silverado / GMC Sierra. Manual — part 2122

1. Place the piston ring into the cylinder bore 6.5 mm (0.25 in) below the top of the ring travel

area. Both rings should be installed with the orientation marks facing the top of the piston.

2. Insert a feeler gage and measure the piston ring end gap. Refer to Engine Mechanical

Specifications (RPO LY5 VIN J) or Engine Mechanical Specifications (RPO LC9
VIN 3) or Engine Mechanical Specifications (RPO LY2 VIN C) or Engine
Mechanical Specifications (RPO LH6 VIN M) or Engine Mechanical Specifications
(RPO LMG VIN 0) or Engine Mechanical Specifications (RPO LY6 VIN K) or
Engine Mechanical Specifications (RPO L76 VIN Y) or Engine Mechanical
Specifications (RPO L92 VIN 8) .

Connecting Rod and Bearings

Measure the piston ring in the cylinder in which it will be
used.

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. 37: View Of Piston, Pin & Piston Rings
Courtesy of GENERAL MOTORS CORP.

IMPORTANT:

The powdered metal connecting rod and cap are
machined for proper clearances. The connecting rod and
cap must be used as an assembly with no repair or
modifications to either mating surface. Do not attempt to
repair the rod or cap. If service is required, replace the
rod and cap as an assembly.

Do not attempt to repair the bolt hole threads of the

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

1. Clean the connecting rod (105) and cap (103) in solvent.

2. Dry the components with compressed air.

connecting rod.

CAUTION: Refer to Safety Glasses Caution .

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. 38: Identifying Connecting Rod Inspection Areas
Courtesy of GENERAL MOTORS CORP.

3. Inspect the connecting rod for the following conditions:

Twisting (1)

Proper fit of the connecting rod and cap mating surfaces (2)

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