GM Service Manual Online
For 1990-2009 cars only

Tools Required

    • J 5239 Connecting Rod Bolt Guide Set
    • J 24270 Cylinder Bore Ridge Reamer

    Object Number: 11497  Size: SH

    Caution: Wear safety glasses in order to avoid eye damage.

  1. Remove the ring ridge.
  2. 1.1. Turn the crankshaft until the piston is at the bottom of the stroke.
    1.2. Place a cloth on the top of the piston.
    1.3. Use the J 24270 in order to remove cylinder ring ridge.
    1.4. Turn the crankshaft so the piston is at the top of the stroke.
    1.5. Remove the cloth.
    1.6. Remove the cutting debris.

    Object Number: 480549  Size: SH

    Important: Place matchmarks or numbers on the connecting rods and the connecting rod caps.

  3. Remove the connecting rod nuts.
  4. Remove the connecting rod cap.

  5. Object Number: 31373  Size: SH
  6. Use the J 5239 in order to protect the crankshaft journals and remove the connecting rod and the piston out of the top of the engine block.

  7. Object Number: 188017  Size: SH

    Important: Always assemble the connecting rod caps to the matching connecting rods.

  8. Remove the connecting rod bearings.
  9. • Keep the connecting bearings with the original connecting rod and connecting rod cap.
    • Wipe the oil from the connecting bearings.
    • Wipe the oil from the crankpins.