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: Engine, Cooling and
Exhaust/Engine/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: Engine, Cooling and Exhaust/Engine/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: Engine, Cooling and Exhaust/Cooling System/Radiator Cooling Fan/Fan
Clutch/Service and Repair).
