Valve Rocker Arm Cover Cleaning and Inspection

Important: 

• Do not use the valve rocker arm cover gasket again. Install a NEW gasket during assembly.
• Remove the ignition coils from the bracket before cleaning the bracket in solvent. Do not submerge the ignition coils in solvent.
• Do not remove the oil fill tube from the cover unless service is required.
• If the oil fill tube has been removed from the rocker arm cover, install a NEW tube during assembly.

1. Remove the ignition coil and bracket assembly and bolts from the rocker cover, if required.
   Fig 1: Removing Ignition Coil And Bracket Assembly

   Courtesy of GENERAL MOTORS CORP.
2. Remove the ignition coils and bolts from the bracket, if required.
   Fig 2: Removing Ignition Coils And Bolts

   Courtesy 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.
   Fig 3: Removing Oil Fill Cap And Tube From Right Cover

   Courtesy of GENERAL MOTORS CORP.
5. Remove the gaskets (1) from the covers.
   Fig 4: Removing Gaskets From Covers

   Courtesy 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 and coil brackets in solvent.
   CAUTION: Refer to SAFETY GLASSES CAUTION .
8. Dry the components with compressed air.
9. Inspect the ventilation system passages for restrictions.
10. Inspect the gasket grooves for damage.
11. Inspect the coil bracket threaded bolt holes for damaged threads or debris.
    Fig 5: Inspecting Components

    Courtesy of GENERAL MOTORS CORP.
12. Inspect the coil mounting brackets for cracking, stripped bolt hole threads, or other damage.
13. Inspect the ignition coils for exterior damage and bent or broken connector pins.
    Fig 6: Inspecting Ignition Coils

    Courtesy of GENERAL MOTORS CORP.