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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 237 (Engine Mechanical - 3.9L) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Left >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: All gasket mating surfaces need to be free of oil and foreign material. Use GM P/N 12346139 (Canadian P/N 10953463) or equivalent, to clean the surfaces.
    Fig 1: Identifying Cylinder Head To Lower Intake Manifold Joint
    GM190588Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW valve rocker arm cover gasket into the groove in the valve rocker arm cover. Ensure that the gasket is properly seated in the groove of the valve rocker arm cover.
  2. Apply sealant GM P/N 12378521 (Canadian P/N 88901148) or equivalent, at the cylinder head to the surfaces where the cylinder head and intake manifold meet (1).
    3. Fig 2: Identifying Left Valve Rocker Arm Cover
    GM1556824Courtesy of GENERAL MOTORS CORP.
  3. Install the valve rocker arm cover.
    4. NOTE: Refer to Fastener Notice .
    IMPORTANT: Use an alternating criss-cross pattern when tightening the valve rocker cover bolts. Failure to do so may result in oil leakage from the valve cover due to improper seating of the gasket.
  4. Install the valve rocker arm cover bolts.

    Tighten:  Tighten the bolts to 10 N.m (89 lb in).

    5. Fig 3: Identifying Positive Crankcase Ventilation (PCV) Foul Air Tube
    GM1582012Courtesy of GENERAL MOTORS CORP.
  5. Connect the PCV foul air tube to the PCV valve. Refer to PLASTIC COLLAR QUICK CONNECT FITTING SERVICE .
    6. Fig 4: View Of Left Spark Plug/Coil Harness
    GM1582091Courtesy of GENERAL MOTORS CORP.
  6. Install the heater inlet and outer front pipe. Refer to Heater Hose/Pipe Replacement - Inlet/Outlet .
  7. Install the spark plug wire harness clip to the heater inlet and outlet front pipe bracket.
  8. Connect the left spark plug wires to the spark plugs.
  9. Install the intake manifold cover. Refer to Intake Manifold Cover Replacement .
  10. Fill the cooling system, as necessary. Refer to Draining and Filling Cooling System (Static Fill) or Draining and Filling Cooling System (Vac-N-Fill) .
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