Special Tools

WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

EN-46745: Piston Pin Retainer Remover and Installer

For equivalent regional tools, refer to Special Tools .

Fig 1: Identifying Piston Rings

Courtesy of GENERAL MOTORS CORP.

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

Disassemble the piston rings (1, 2, 3, 4, 5). Use a suitable tool to expand the rings. The piston rings must not be reused.

Fig 2: View of Piston Pin Retainers

Courtesy of GENERAL MOTORS CORP.

NOTE: Two retainers hold the piston pins in place. No special tools are required to remove the piston pins. Ensure that the piston pin is not damaged. Do not reuse the retainers.

Remove the piston pin retainers using the EN-46745: remover (1).

Fig 3: Identifying Piston Pin And Connecting Rod

Courtesy of GENERAL MOTORS CORP.

Remove the piston pin (1) and the connecting rod (3) from the piston (2).