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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 62 (Engine Mechanical) >> Repair Instructions >> On-Vehicle Repair Instructions >> Valve Rocker Arm Cover Replacement - Left Side >> Installation Procedure

Installation Procedure

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
  • All gasket surfaces should be free of oil an/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 PCV valve grommet has been removed from the rocker cover, install a NEW grommet during assembly.
    Fig 1: Rocker Arm Cover Gasket
    GM490696Courtesy of GENERAL MOTORS CORP.
  1. Install a NEW rocker cover gasket (1) into the valve rocker cover lip.
  2. Install the valve rocker arm cover onto the cylinder head.
  3. Install new rocker arm cover grommets, if necessary.
    NOTE: Refer to Fastener Notice .
  4. Install the rocker arm cover bolts.

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

    5. Fig 2: View Of Ignition Coil, Bracket Assembly, Wire Harness & Bolts (Left)
    GM1342458Courtesy of GENERAL MOTORS CORP.
  5. Apply threadlock to the threads of the bracket bolts. Refer to Sealers, Adhesives, and Lubricants  for the correct part number.
  6. Install the ignition coils and bracket to the rocker arm cover.
  7. Install the ignition coil bracket studs to the rocker arm cover.

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

    8. Fig 3: View Of Main Coil Harness & Fuel Injector Electrical Connectors (Left Side)
    GM679597Courtesy of GENERAL MOTORS CORP.
  8. Install the spark plug wires to the ignition coils.
  9. Re-position the engine harness.
  10. Install the harness clips (1).
  11. Connect the main electrical connector (2) feeding the ignition coils.
  12. Install the CPA lock.
  13. Install the engine sight shield. Refer to Upper Intake Manifold Sight Shield Replacement (6.0L (LQ4)) .
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