Silverado 2500 4WD V8-6.6L DSL Turbo (2010)
9. Loosen the valve adjusting screws.
10. Insert a feeler gauge between the tip of the rocker arm and the valve bridge.
11. Adjust the valve clearance to 0.3 mm (0.012 in). Refer to Valve Clearance Adjustment Specifications (See: ) to determine which valves can be
adjusted when the engine is at TDC.
12. Tighten the lock nut.
Tighten nut to 22 Nm (16 lb ft).
13. Install the upper valve rocker arm covers. Refer to Valve Rocker Arm Upper Cover Replacement - Left Side (See: Cylinder Head
Assembly/Valve Cover/Service and Repair/Valve Rocker Arm Upper Cover Replacement - Left Side) and Valve Rocker Arm Upper Cover
Replacement - Right Side (See: Cylinder Head Assembly/Valve Cover/Service and Repair/Valve Rocker Arm Upper Cover Replacement - Right
Side).
14. Install the fan clutch. Refer to Fan Clutch Replacement (Diesel) (See: Cooling System/Radiator Cooling Fan/Fan Clutch/Service and Repair).
