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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Engine Mechanical - 4.3L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Valve Rocker Arm Cover Cleaning and Inspection

Valve Rocker Arm Cover Cleaning and Inspection

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Valve Rocker Arm Cover
    GM1545276Courtesy of GENERAL MOTORS CORP.
    CAUTION: Refer to SAFETY GLASSES CAUTION in Cautions and Notices.
    IMPORTANT: The positive crankcase ventilation (PCV) orifice is part of the valve cover and cannot be removed. If damaged, replace the valve cover.
  1. Clean the valve rocker arm cover in cleaning solvent.
  2. Dry the valve rocker arm cover with compressed air.
  3. Inspect the valve rocker arm cover for the following:
    • Damage to the PCV orifice (1)
    • Damage to the bolt holes (2)

      A damaged valve rocker arm cover may interfere with the valve rocker arms.

    • Damage to the exterior of the valve rocker arm cover (3)
    • Gouges or damage to the sealing surface (4)
    • Damage to the oil fill tube grommet (5)
    • Restrictions to the ventilation system passages