GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

  1. Clean the area around the tube/oil fill cap before removing the tube/oil fill cap in order to prevent contaminants from falling into the valve rocker arm cover opening.

  2. Object Number: 61856  Size: SH
  3. Twist the tube/oil fill cap counter clockwise to unlock the tube/oil fill cap from the engine left side valve rocker arm cover.
  4. Lift up the front of the fuel injector sight shield. Slide the tab out of the engine bracket.
  5. Replace the tube/oil fill cap in the engine left side valve rocker arm cover.

Installation Procedure


    Object Number: 61856  Size: SH
  1. Remove the tube/oil fill cap from the engine left side valve rocker arm cover.
  2. Insert the tab of the fuel injector sight shield under the engine bracket.
  3. Place the hole of the fuel injector sight shield onto the oil fill neck of the engine left side valve rocker arm cover.
  4. Install the tube/oil fill cap through the fuel injector sight shield into the engine left side valve rocker arm cover.
  5. Twist the tube/oil fill cap clockwise in order to lock the tube/oil fill cap in place.