GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Buick 🢒 2009 🢒 LaCrosse 🢒 Engine 🢒 Engine Mechanical - 3.8L 🢒 Piston and Connecting Rod Disassemble

    Object Number: 4977 Size: SH

    Warning: Handle the piston carefully. Worn piston rings are sharp and may cause bodily injury.

  1. Remove the piston rings. Use a suitable tool to expand the rings. Piston rings must not be reused.

    2. Object Number: 35866 Size: SH

    Caution: When removing or installing the piston pin retainer and piston pin do not damage the piston or the retaining groove in the piston. Damage to the piston or retaining groove can lead to severe engine damage.

  2. Remove the piston pin retaining clips.
  3. Remove the piston pin.