Chevrolet Silverado / GMC Sierra. Service manual — part 452

Fig. 130: Rocker Arm Shaft Bolts Loosening Sequence
Courtesy of GENERAL MOTORS CORP.

4. Remove the rocker arm shaft assembly bolts in the sequence shown. Leave the bolts in the

rocker arm shaft brackets.

2008 Chevrolet Silverado 1500

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

Fig. 131: View Of Rocker Arm Shaft
Courtesy of GENERAL MOTORS CORP.

5. Remove the rocker arm shaft assembly from the cylinder head.

2008 Chevrolet Silverado 1500

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

Fig. 132: View Of Pushrods, Valve Spring Caps & Valve Lifter Bridges
Courtesy of GENERAL MOTORS CORP.

6. Remove the valve bridge pins.

7. Remove the valve bridges.

8. Remove the pushrods.

2008 Chevrolet Silverado 1500

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

Fig. 133: View Of Rocker Arm Components
Courtesy of GENERAL MOTORS CORP.

9. Remove the rocker arm shaft bracket bolts (1), if necessary.

10. Remove the bracket (12), rocker arm (11), and spring (10), if necessary.

11. Remove the remaining rocker arms, springs, and brackets, if necessary.

12. If required, clean and inspect the valve rocker arm and shaft. Refer to Valve Rocker Arm

and Shaft Cleaning and Inspection .

Installation Procedure

2008 Chevrolet Silverado 1500

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