GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 TrailBlazer - 2WD 🢒 Engine 🢒 Engine Mechanical - 4.8L, 5.3L, and 6.0L 🢒 Valve Rocker Arm Cover Installation - Right Side

    Object Number: 260110 Size: SH

    Important: 

       • All gasket surfaces should be free of oil or other foreign material during assembly.
       • Do not use the valve rocker arm cover gasket again.
       • Do not remove the ignition coils and bracket from the valve rocker arm cover, unless required.
       • The valve rocker arm cover bolt grommets may be used again.
       • If the oil fill tube has been removed from the valve rocker arm cover, install a NEW oil fill tube during assembly.

  1. Lubricate the O-ring seal of the NEW oil fill tube with clean engine oil.
  2. Insert the NEW oil fill tube into the rocker arm cover and rotate the tube clockwise until locked in the proper position.
  3. Install the oil fill cap into the tube and rotate clockwise until locked in the proper position.

    4. Object Number: 1272820 Size: SH
  4. Install a NEW cover gasket (504) into the valve rocker arm cover.

    5. Object Number: 260084 Size: SH
  5. Install the valve rocker arm cover onto the cylinder head.

    6. Notice: Refer to Fastener Notice in the Preface section.

  6. Install the cover bolts with grommets.

    7. Tighten
    Tighten the valve rocker arm cover bolts to 12 N·m (106 lb in).


    Object Number: 825840 Size: SH
  7. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) to the threads of the bracket bolts.
  8. Install the ignition coil and bracket assembly and bolts.

    9. Tighten
    Tighten the ignition coil and bracket assembly studs to 12 N·m (106 lb in).