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HOMESERVICE MANUALSGMC1999FORWARD CONTROL 5.7 R, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 719 (ENGINE MECHANICAL - 3.8L (UNIT REPAIR))REPAIR INSTRUCTIONSVALVE ROCKER ARM COVER CLEANING AND INSPECTION
1999 GMC Forward Control 5.7 R, Automatic

Valve Rocker Arm Cover Cleaning and Inspection

1999 GMC Forward Control 5.7 R, AutomaticSECTION Valve Rocker Arm Cover Cleaning and Inspection
WARNING: This page is about a different car, the 2002 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
  • Clean the valve rocker arm cover mating surface.
  • Clean the valve rocker arm cover. Remove all the sludge and the oil deposits.
  • Inspect the valve rocker arm cover for damage. Replace the valve rocker arm cover if any damage is found.
    Fig 1: Valve Rocker Arm Cover
    G01703631Courtesy of GENERAL MOTORS CORP.
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.