LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2003 >> Safari Van Cargo, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1029 (Engine Mechanical - 4.8L, 5.3L & 6.0L (Repair Instructions - 3 Of 3)) >> Repair Instructions (Off-Vehicle Repair Instructions Part 3) >> Valve Rocker Arm Cover Cleaning and Inspection

Valve Rocker Arm Cover Cleaning and Inspection

WARNING: This page is about a different car, the 2004 GMC Sierra, 2004 GMC Cab & Chassis Sierra, 2004 Chevrolet Silverado, and 2004 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
    IMPORTANT:
    • Do not use the valve rocker arm cover gasket again. Install a NEW gasket during assembly.
    • Remove the ignition coils before cleaning the cover in solvent. Do not submerge the ignition coils in solvent.
    • Do not remove the oil fill tube or crankcase vent valve grommet from the covers unless service is required.
    • If the oil fill tube or crankcase vent valve grommet have been removed from the rocker arm covers, install a NEW tube or grommet during assembly.
  1. Remove the ignition coil and bracket assembly, bolts, and wire harness from the left cover, if required.
    2. Fig 1: View Of Ignition Coil, Bracket Assembly, Wire Harness & Bolts (Left)
    GM1342458Courtesy of GENERAL MOTORS CORP.
  2. Remove the ignition coil and bracket assembly, bolts, and wire harness from the right cover, if required.
    3. Fig 2: View Of Ignition Coil, Bracket Assembly & Bolts (Right)
    GM260090Courtesy of GENERAL MOTORS CORP.
  3. Inspect the tube for a loose fit or damage.
  4. Remove the oil fill cap and tube from the right cover, if required.
    5. Fig 3: View Of Oil Fill Cap & Tube
    GM260110Courtesy of GENERAL MOTORS CORP.
  5. Remove the gaskets (504) from the covers.
    6. Fig 4: View Of Valve Rocker Arm Cover Gasket
    GM1272820Courtesy of GENERAL MOTORS CORP.
  6. Remove the cover mounting bolts, with grommets.

    Cover mounting bolts and grommets that are not damaged may be used again during assembly.

  7. Clean the covers in solvent.
    8. CAUTION: Refer to Safety Glasses Caution in Cautions and Notices.
  8. Dry the covers with compressed air.
    9. Fig 5: View Of Valve Rocker Arm Cover
    GM1277108Courtesy of GENERAL MOTORS CORP.
  9. Inspect the ventilation system passages for restrictions.
  10. Inspect the gasket grooves for damage.
  11. Inspect the coil bracket threaded bolt holes for damage or debris.
scientia non olet · About LEMON Manuals