Chevrolet Silverado / GMC Sierra. Service manual — part 2196

Fig. 39: View Of Cylinder Head & Bolts
Courtesy of GENERAL MOTORS CORP.

8. Install the cylinder head (218) onto the locating pins and the gasket.

9. Install the NEW cylinder head bolts (220, 221).

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. 40: Cylinder Head Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.

10. Tighten the cylinder head bolts.

Tighten:

1. Tighten the M11 cylinder head bolts (1-10) a first pass in sequence to 30 N.m (22 lb

ft).

2. Tighten the M11 cylinder head bolts (1-10) a second pass in sequence to 90 degrees

using the J 45059 .

3. Tighten the M11 cylinder head bolts (1-10) a final pass in sequence to 70 degrees

using the J 45059 .

4. Tighten the M8 cylinder head bolts (11-15) to 30 N.m (22 lb ft). Begin with the center

bolt (11) and alternating side-to-side, work outward tightening all of the bolts.

VALVE ROCKER ARM AND PUSH ROD INSTALLATION (RPO LY2/LH6/LMG/LY5/LC9)

NOTE:

Refer to Fastener Notice .

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. 41: View Of Valve Rocker Arm Pivot Support
Courtesy of GENERAL MOTORS CORP.

1. Lubricate the valve rocker arms and pushrods with clean engine oil.

2. Lubricate the flange of the valve rocker arm bolts with clean engine oil.

3. Install the valve rocker arm pivot support.

IMPORTANT:

When using the valve train components again, always
install the components to the original location and
position.

Valve lash is net build. No valve adjustment is required.

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. 42: View Of Pushrods
Courtesy of GENERAL MOTORS CORP.

4. Install the pushrods.

IMPORTANT: Ensure the pushrods seat properly to the valve lifter sockets.

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