GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 8037 Ring Compressor


    Object Number: 261793  Size: SH

    Notice: Install a piece of hose over the threads of the rod bolts. This is to prevent damage to the bearing journal, the cylinder walls, or the rod bolt threads when removing the connecting rod. Remove the hose after the connecting rod is in place.

  1. Apply engine oil to the following components:
  2. • The pistons
    • The rings
    • The cylinder walls
    • The connecting rod bearings
    • The crankshaft

    Object Number: 261795  Size: SH
  3. When installing piston assembly into the cylinder bore, point the arrow mark on the piston head to the crankshaft timing pulley side.
  4. Install the upper connecting rod bearing to the connecting rod cap.
  5. Install the piston assembly into the cylinder bore.
  6. Guide the connecting rod into place on the crankshaft.
  7. Install a J 8037 , ensuring it sits firmly against the cylinder block until all of the piston rings have entered the cylinder bore (1).

  8. Object Number: 261797  Size: SH
  9. Tap gently with a hammer handle on the piston head to install the piston into the cylinder bore.

  10. Object Number: 261799  Size: SH
  11. Install the lower connecting rod bearing to the connecting rod.
  12. Notice: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.

  13. Install the connecting rod cap (1) to the connecting rod and secure with two connecting rod cap nuts.
  14. Tighten
    Tighten the connecting rod cap nuts to 35 N·m (26 lb ft).