How to Replace the Cylinder Head Gasket in a 2000 Chevy Pickup

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The Chevrolet Silverado is a full-size pickup truck that has been in production since 1998. It is available with several types of V-6 and V-8 engines, which have a cylinder head on each side of the engine. The procedure for replacing the cylinder head gasket varies slightly, depending on which cylinder head you must remove. These procedures are generally the same for the 4.3-liter, 4.8-liter and 5.3-liter engines in the 2000 Chevrolet pickup.

Things You'll Need

  • Socket wrench set
  • GM spray cleaner, part number 12346139
  • Air compressor
  • GM driver tool, part number J 42385-107
  • 10 bolts,11-mm
  • GM thread lock compound, part number 12345382
  • Torque wrench
  • Disconnect the negative battery cable using the socket wrench. Detach the bleed pipe for the coolant from the right cylinder head. Disconnect the intake manifold and remove the push rods from the engine. Remove the exhaust manifolds from the engine.

  • Remove the mounting bolts that attach the alternator bracket to the left cylinder head with a socket wrench. Disconnect the mounting bolt for the alternator bracket that is behind the power steering pump, and push the bracket aside with the alternator still attached.

  • Disconnect the bolt that attaches the oil level tube to the right cylinder head with a socket wrench. Detach the oil level tube from the right cylinder head, and unscrew the spark plugs from the cylinder head.

  • Remove the mounting bolts for the cylinder head with a socket wrench, and discard the 11-mm mounting bolts. Lift the cylinder head from the engine and discard the cylinder head gasket.

  • Clean the bolt holes on the engine block with GM spray cleaner, part number 12346139, and blow the holes clear with compressed air. Remove the thread-locking material from the 8-mm mounting bolts with the GM driver tool, part number J 42385-107. Place the new gasket for the cylinder head over the locating pins on the engine block, then install the cylinder head over the locating pins.

  • Fasten new 11-mm mounting bolts to the cylinder head by hand. Apply a 0.2-inch bead of GM thread lock compound, part number 12345382, to the threads of the 8-mm bolts, and fasten them by hand.

  • Tighten the 11-mm bolts to 22 foot-pounds with a torque wrench on the first pass. Tighten the 11-mm bolts an additional 90 degrees on the second pass, then tighten them another 70 degrees on the third pass. Tighten the 8-mm bolts to 22 foot-pounds, beginning with the center bolt. Work your way outward on the 8-mm bolts, alternating from side to side.

  • Connect the oil level tube to the right cylinder head with a socket wrench. Mount the bracket for the alternator and tighten its bolts to 37 foot-pounds with a torque wrench, including the mounting bolt below the power steering pump. Connect the exhaust manifolds to the engine, and install the push rods. Attach the bleed pipe for the coolant to the right cylinder head, and connect the negative battery cable.

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