Diagnosis - Automatic Transmission: Identification
The 5R55W/S 5-speed automatic transmission can be identified by the vehicle certification label, located on driver's door post. This label contains the transmission letter code under space marked TR (next to space marked AXLE). Letter code for 5R55S transmission is "V". Letter code for 5R55W transmission is "R". Transmission can also be identified by service identification tag attached to transmission case. See Fig 1 and Fig 2 .