Tools Required

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.

J 24270 Ridge Reamer
J 5239 Connecting Rod Bolt Guide

Mark the piston with the number of the cylinder from which the piston is being removed.
Mark the connecting rod and the connecting rod cap in order to ensure correct assembly.
CAUTION: If there is a pronounced ridge at the top of the piston travel, the ridge must be removed with a ridge reamer before the piston and connecting rod assembly are removed. Applying force may break the piston rings or damage the piston.
Use the J 24270 in order to remove the cylinder bore ring ridge.
Complete the following steps:
1. 3.1. Turn the crankshaft until the piston is at the bottom of the stroke.
2. 3.2. Cover the piston with a cloth.
3. 3.3. Remove the cylinder ring ridge.
4. 3.4. Turn the crankshaft until the piston is at the top of the stroke.
5. 3.5. Remove the cloth.
6. 3.6. Remove the metal shavings from the cylinder and piston.
Fig 1: Removing Cylinder Bore Ring Ridge
Courtesy of GENERAL MOTORS CORP.
Remove the connecting rod nuts and cap.
Remove the connecting rod cap and bearing half.
CAUTION: Install thread protector in order to avoid damage to the crankshaft journal.
Install J 5239 onto the connecting rod bolts.
Remove the connecting rod and piston assembly.
Push out the assembly using a suitable tool.

Fig 2: Removing Piston, Connecting Rod & Bearing

Courtesy of GENERAL MOTORS CORP.