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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 834 (Engine Mechanical - 4.8L, 5.3L & 6.0L) >> Description and Operation >> Valve Train

Valve Train

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Motion is transmitted from the camshaft through the hydraulic roller valve lifters and tubular pushrod 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, pivot supports. Each rocker arm is retained on the pivot support and cylinder head by a bolt. Valve lash is net build.

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