Automatic Transaxle Overhaul & Testing - 4T65-E: Identification: Transaxle
Transaxle has a metal identification plate or Service Replacement Transmission Assembly (SRTA) plate attached to rear face of transaxle. See Fig 1. Transaxle RPO codes are MN3, MN7, M15 or M76. The MN3 and MN7 are heavy duty models and have 10.2" (258 mm) torque converters. The M15 model has a 9.6" (245 mm) torque converter. The M76 model is used in All Wheel Drive (AWD) applications. For model build information on each RPO code, see Fig 2-Fig 9 .