Installation Procedure

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT:

All gasket surfaces should be free of oil or other foreign material during assembly.
DO NOT reuse the valve rocker arm cover gasket.
The valve rocker arm cover bolt grommets may be reused.
If the oil fill tube has been removed from the rocker arm cover, install a NEW fill tube during assembly.

Lubricate the O-ring seal of the NEW oil fill tube with clean engine oil.
Insert the NEW oil fill tube into the rocker arm cover.
Rotate the tube clockwise until locked in the proper position.
Install the oil fill cap into the tube.
Rotate the cap clockwise until locked in the proper position.

Fig 1: Inserting Oil Fill Tube Into Rocker Arm Cover
Courtesy of GENERAL MOTORS CORP.
Install a NEW rocker cover gasket (1) into the valve rocker arm cover.

Fig 2: Installing Rocker Cover Gasket Into Valve Rocker Arm Cover
Courtesy of GENERAL MOTORS CORP.
Install the valve rocker arm cover onto the cylinder head.
Install new rocker arm cover grommets, if necessary.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install the rocker arm cover bolts and grommets.
Tighten

Tighten the bolts to 12 N.m (106 lb in).

Fig 3: Installing Valve Rocker Arm Cover Onto Cylinder Head
Courtesy of GENERAL MOTORS CORP.
Install the vent hose to the throttle body and valve rocker arm cover.

Fig 4: Installing Vent Hose To Throttle Body And Valve Rocker Arm Cover
Courtesy of GENERAL MOTORS CORP.
Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the bracket bolts.
If necessary, install the ignition coils and bracket to the rocker arm cover.
If necessary, install the ignition coil bracket studs to the rocker cover.
Tighten

Tighten the studs to 12 N.m (106 lb in).

Fig 5: Installing Ignition Coils And Bracket To Rocker Arm Cover
Courtesy of GENERAL MOTORS CORP.
Install the spark plug wires to the ignition coils.
Position the engine harness, if necessary.
Install the harness clips.
Connect the main electrical connector (1) feeding the ignition coils.
Install the CPA lock.
Install the A/C compressor hose. Refer to COMPRESSOR HOSE ASSEMBLY REPLACEMENT (BODY VIN TYPE 3) or COMPRESSOR HOSE ASSEMBLY REPLACEMENT (BODY VIN TYPE 6) in Heating, Ventilation, and Air Conditioning.

Fig 6: Connecting Main Electrical Connector Feeding Ignition Coils
Courtesy of GENERAL MOTORS CORP.