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Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 421 (Engine Mechanical - 4.8L, 5.3L, & 6.0L (On-Vehicle)) >> Repair Instructions >> Valve Rocker Arm Cover Replacement - Left >> Installation Procedure

Installation Procedure

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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. Fig 2: Valve Cover To Cylinder Head View
    GM260085Courtesy of GENERAL MOTORS CORP.
  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 in Cautions and Notices.
  4. Install the rocker arm cover bolts.

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

    5. Fig 3: Breather Crossover Tube View
    GM647793Courtesy of GENERAL MOTORS CORP.
  5. Install the PCV hose to the rocker arm cover.
    6. Fig 4: Right Ignition Coil, Bracket & Studs
    GM647790Courtesy of GENERAL MOTORS CORP.
  6. Apply threadlock GM U.S. P/N 12345382, Canada P/N 10953489, or equivalent to the threads of the bracket bolts.
  7. Install the ignition coils and bracket to the rocker arm cover.
  8. Install the ignition coil bracket studs to the rocker arm cover.

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

    9. Fig 5: Left Ignition Coil Electrical Connectors & Harness Clips
    GM679597Courtesy of GENERAL MOTORS CORP.
  9. Install the spark plug wires to the ignition coils.
  10. Position the engine harness, if necessary.
  11. Install the harness clips (1).
  12. Connect the main electrical connector (2) feeding the ignition coils.
  13. Install the CPA lock.
  14. Install the engine sight shield, if required. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (LQ4))  or Engine Sight Shield Replacement (6.0L (LQ9)) .
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