Fix It

Disconnect the cylinder head bolts with a socket wrench. Insert a pry bar under each end of the cylinder head, and caully pry it away from the engine block. Lift the cylinder head off the mounting dowels, and remove it from the vehicle. Discard the cylinder head gasket, and remove any traces of the cylinder head gasket from the engine block with a gasket scraper.

Place a container under the radiator, and open the drain hole to drain the coolant from the radiator into the container. Replace the drain plug, and store the coolant for later use. Remove the mounting bolts from the radiator with a socket wrench, and detach the radiator from the vehicle.

Disconnect the oil pan with a socket wrench. Detach the drive belt for the power steering pumps and air conditioning compressor from their respective pulleys, if your vehicle is so equipped. Remove the drive belt for the water pump. Disconnect the cooling fan and its clutch from the engine.

Make matching marks on the crankshaft pulley and the crankshaft to ensure you can correctly install the pulley later. Hold the crankshaft in place with a counter-holding bar, and remove the central mounting bolt on the crankshaft pulley with a socket wrench. Detach the pulley from the crankshaft with a gear puller.

Disconnect the water bypass pipe from the engine block, and remove the adjusting bar for the cooling fan belt. Remove the bracket for the power steering pump with a socket wrench, if your vehicle is so equipped. Disconnect the water outlet hose from the engine.

Remove the mounting bolts from the cover for the timing chain with a socket wrench, and disconnect the cover. Detach the timing chain from the crankshaft sprocket, and remove the timing chain from the camshaft with the camshaft sprocket still attached. Remove the timing chain and camshaft sprocket from the vehicle. Detach the splines for the oil pump and the crankshaft sprocket from the crankshaft.

Rotate the crankshaft so that its key points straight up, and slide the crankshaft sprocket onto the crankshaft. Mount the new timing chain to the crankshaft sprocket so the single bright link on the new timing chain aligns with the timing mark on the crankshaft sprocket. Mount the new timing chain to the camshaft sprocket so the link between the two bright links on the timing chain aligns with the timing mark on the camshaft sprocket.

Turn the camshaft sprocket counterclockwise by hand to take up the slack in the timing chain. Connect the splines for the oil pump onto the crankshaft with a bearing installing tool. Install new gaskets for the timing chain cover, and place the cover into position. Tighten the 8mm mounting bolts on the timing chain cover to 9 foot-pounds with a torque wrench. Tighten the 10 mm mounting bolts to 29 foot-pounds.

Connect the alternator adjusting bar to the timing chain cover, and tighten its mounting bolts to 9 foot-pounds with a torque wrench. Attach the water outlet pipe from the heater to the engine. Mount the crankshaft pulley to the crankshaft, using the marks you made in step four as a guide. Hold the pulley in place with the counter-holding tool, and tighten the central mounting bolt for the crankshaft pulley to 116 foot-pounds.

Attach the drive belt for the air conditioning unit, if your vehicle is so equipped. Connect the pulley for the water pump with a socket wrench. Install the air conditioning bracket and compressor if you removed them earlier. Connect the belt for the power steering pump, if your vehicle is so equipped. Install the oil pan.

Install the radiator, and ill it with coolant. Replace the cylinder head.

Disconnect the cylinder head with a socket wrench. Drain the coolant from the radiator, and store it for later use. Remove the radiator from the vehicle.

Remove the alternator from the engine with a socket wrench. Disconnect the oil pan. Remove the mounting bolts, drive belt and hoses from the air pump, if your vehicle is so equipped. Disconnect the air pump and its bracket from the engine.

Disconnect the water pump assembly and cooling fan from the vehicle with a socket wrench. Remove the mounting bolt for the crankshaft pulley, and detach the pulley with a gear puller.

Disconnect the water bypass line and the fan belt adjusting bar. Detach the outlet line from the heater. Remove the mounting bolts for the timing chain cover with a socket wrench, and disconnect the cover.

Detach the timing chain from the damper of the camshaft, and detach the timing chain from the camshaft sprocket. Remove the camshaft sprocket from the camshaft. Pull the crankshaft sprocket from the crankshaft. Disconnect the spline for the oil pump from the crankshaft.

Rotate the crankshaft clockwise until the key on the crankshaft points straight up, and mount the crankshaft sprocket onto the crankshaft. Place the new timing chain on the crankshaft sprocket, and align the single bright link on the timing chain with the crankshaft sprockets timing mark.

Place the timing chain on the camshaft sprocket. Mount the camshaft sprocket to the camshaft so that the camshafts timing mark is between the two bright links on the timing chain.

Install the oil pump spline to the crankshaft. Mount the timing chain gasket to the engine block, and take up the slack in the timing chain by turning the camshaft sprocket counterclockwise with a socket wrench.

Connect the timing chain cover, and use a torque wrench to tighten the 8mm bolts to 9 foot-pounds. Torque the 10mm mounting bolts to 29 foot-pounds. Coat the gaskets for the timing chain cover and oil pan with sealer. Connect the fan belt adjusting bar, and tighten its bolt to 9 foot-pounds.

Attach the water bypass line. Mount the pulley onto the crankshaft, and tighten the mounting bolt. Connect the water pump and compressor for the air conditioner with a socket wrench. Install the oil pan, radiator and cylinder head in that order.

Replace the oil and coolant to their proper levels. Start the vehicle and check for fluid leaks.

Remove the engine front cover. Rotate the crankshaft until the timing marks are aligned with the crankshaft sprocket, camshaft sprocket locator hole and the engine block. The number one cylinder should be at top dead center (TDC).

Unscrew the camshaft sprocket bolt. Remove the camshaft sprocket and the timing chain. Remove the timing chain. Use a crankshaft sprocket remover to remove the crankshaft sprocket. Remove the timing chain dampener bolts. Remove the timing chain dampener.

Replace the timing chain. Install the crankshaft sprocket using a crankshaft sprocket installer. Apply GM EOS P/N 1052367 or equivalent to the sprocket thrust surface. Install the timing chain dampener to the block. Tighten the timing chain dampener bolts to 15 foot-pounds.

Align the crankshaft timing mark to the timing mark on the bottom of the chain dampener. Hold the camshaft sprocket with the chain hanging down and install the chain to the crankshaft gear. Align the timing mark on the camshaft gear (center line of the locator hole) with the timing mark on the top of the chain damper.

Remove the Crankshaft Sprocket Installer. Align the dowel in the camshaft with the dowel hole in the camshaft sprocket. Draw the camshaft sprocket onto the camshaft using the mounting bolt. Coat the crankshaft and camshaft sprocket with engine oil. Install the camshaft sprocket bolt. Tighten the bolt to 81 foot-pounds. Install the engine front cover.