GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2009 🢒 TopKick C-Series (Conventional) C4/C5 🢒 Engine 🢒 Engine Mechanical - 8.1L 🢒 Valve Rocker Arm Cover Cleaning and Inspection

    Object Number: 1310015 Size: SH

    Caution: In order to ensure correct reinstallation, mark the ignition wiring harness connectors for cylinders one and three, and cylinders six and eight prior to disconnection. Failure to reconnect the ignition wiring harness connectors to the proper ignition coils may result in serious engine damage.

    Caution: This component is initially installed using a self-tapping bolt. Care should be taken when removing and/or installing the self-tapping bolt. Failure to use care when removing and/or installing the self-tapping bolt can lead to damage and unnecessary replacement of the self-tapping bolt and/or the component the self-tapping bolt is threaded into.

  1. Remove the white wiring harness clip locks.
  2. Disconnect the ignition coil wiring harness from the ignition coils.
  3. Remove the ignition coil wiring harness retainer bolts.
  4. Open the 2 wiring harness retainers and remove the ignition coil wiring harness.

    5. Object Number: 1310018 Size: SH
  5. Remove the ignition coil bolts.
  6. Remove the ignition coils.

    7. Object Number: 1309986 Size: SH

    Note: Do not clean or submerge the ignition coils in solvent.

    Remove the ignition coils before cleaning the cover in solvent. To prevent damage to the gasket, minimize solvent contact with the gaskets.

  7. Clean the valve rocker arm cover in solvent.

    8. Warning: Refer to Safety Glasses Warning in the Preface section.

  8. Dry the covers with compressed air.
  9. Inspect the covers for the following conditions:
    10. • Gouges or damage to the sealing surfaces
    • Cracking or damage to the valve cover gasket
    • Debris or damage to the bolt hole threads

    Object Number: 1310018 Size: SH

    Caution: This bolt is a self-tapping bolt. If installing this bolt into a new component, installation of the bolt may be difficult. Ensure that the bolt is not over-torqued during the initial installation (thread cutting). Failure to limit torque can lead to bolt failure.

  10. Install the ignition coils.

    11. Caution: Refer to Fastener Caution in the Preface section.

  11. Install the ignition coil bolts. Tighten the ignition coil bolts to 12 N·m (106 lb in).

    12. Object Number: 1310015 Size: SH
  12. Install and secure the ignition coil wiring harness into the 2 wiring harness retainers.
  13. Install the ignition coil wiring harness retainer bolts. Tighten the ignition coil wiring harness retainer bolts to 12 N·m (106 lb in).
  14. Connect the ignition coil wiring harness to the ignition coils. Ensure the connectors for cylinders 1 and 3, and cylinders 6 and 8 are connected to the corresponding ignition coils.
  15. Install the white wiring harness clip locks.