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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 10 (Engine Mechanical - 8.1L) >> Description and Operation >> Engine Component Description >> Pistons and Connecting Rods

Pistons and Connecting Rods

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The pistons are cast aluminum and use 2 compression rings and 1 3-piece oil control ring assembly. The piston pins are a full-floating design. The piston skirts are coated in order to create an interference fit into the cylinder bore. The connecting rods are forged steel and have precision insert type crankshaft bearings. The piston and pin are to be serviced as an assembly.