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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1260 (Engine Mechanical - 4.8L, 5.3L, 6.0L Or 6.2L (1 Of 5)) >> Description and Operation >> Engine Component Description >> Valve Train - RPO LY2/LY6/L92

Valve Train - RPO LY2/LY6/L92

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Motion is transmitted from the camshaft through the hydraulic roller valve lifters and tubular pushrods to the roller type rocker arms. The nylon valve lifter guides position and retain the valve lifters. The valve rocker arms for each bank of cylinders are mounted on pedestals or pivot supports. Each rocker arm is retained on the pivot support and cylinder head by a bolt. Valve lash is net build.