Automatic Transmission/Transaxle: Application and ID

The HYDRA-MATIC 4L60-E transmission has the identification information stamped into the case pan rail. Refer to Transmission ID Information. This information helps the service technician order the correct replacement parts from a GM parts catalog. Additional transmission identification information is provided on the Service Parts Identification label. This label shows the Regular Production Options (RPO) as well as the standard and mandatory options. This label is affixed to the inside of each vehicle at the assembly plant.