1 Disconnect the cable from the negative battery terminal
2 On L91 and LXT engines, disconnect the spark plug wires from the spark plugs
3 On LXV engines, remove the ignition coil assembly from the valve cover
4 Detach the PCV hose from the valve cover.
5 Detach the electrical connectors to the sensors routed in the main wiring harness and reposition the harness away from the valve cover.
6 Remove the valve cover bolts, then lift the valve cover off. Tap gently with a soft-face hammer, if necessary, to break the gasket seal.
7 Remove the valve cover and the O-rings around each bolt hole opening
8 Clean the gasket surfaces on the intake manifold, cylinder head and valve cover. Use a shop rag and brake cleaner to wipe off all residue and gasket material from the sealing surfaces.
9 Insert a new valve cover gasket into the grooved recess in the valve cover. Make sure the gasket is positioned properly in the groove, then install the O-rings around each of the bolt holes.
10 Apply a bead of RTV sealant to the joints where the front camshaft bearing caps meet the cylinder head and to the semi-circular cutouts
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11 The remainder of installation is the reverse of removal. Tighten the valve cover bolts evenly, starting with the center bolts and working outward, torque to 71 inch pounds.
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