Removal Procedure

WARNING: This page is about a different variant/trim than selected.

Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement .
Remove the generator bracket. Refer to Generator Bracket and Engine Lift Bracket Replacement (LNJ) .
Remove the ignition control module bracket from the engine with the ignition control module and spark plug wires still attached. Position out of the way. Refer to Ignition Control Module Bracket Replacement .

Fig 1: Identifying PCV Fresh Air Pipe At Valve Cover

Courtesy of GENERAL MOTORS CORP.

Disconnect the positive crankcase ventilation (PCV) fresh air pipe (1) from the right valve rocker arm cover.

Fig 2: View Of Valve Rocker Arm Cover - Right

Courtesy of GENERAL MOTORS CORP.

NOTE: Valve rocker arm cover gasket and sealant must be carefully trimmed away from lower intake manifold gasket. Failure to do so will damage the lower intake manifold gasket, causing a severe oil leak.

Loosen the valve rocker arm cover bolts.

Fig 3: Identifying Cylinder Head To Lower Intake Manifold Joint

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: When removing the valve rocker arm cover, ensure the gasket stays in place attached to the cylinder head.

Remove the valve rocker arm cover.
Bump the end of the valve rocker arm cover with the palm of your hand or a soft rubber mallet if the cover adheres to the cylinder head.
Trim the valve cover gasket and sealant away from the lower intake manifold gasket at the cylinder head to lower intake manifold joints (1).
Remove the valve rocker arm cover gasket.
Clean the sealing surface on the cylinder head with degreaser.
Clean the valve rocker arm cover. Refer to Valve Rocker Arm Cover Cleaning and Inspection .