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Servicing - A/T: Identification

The manufacturer has developed a system to functionally describe its transmissions and transaxles. The designations indicate number of speeds, type, series and major features. See Fig 1 . Also see appropriate table below.

FWD AUTOMATIC TRANSAXLE APPLICATIONS

Manufacturer & Model Body Transaxle(s)
Buick
Skylark "N" 3T40 & 4T60-E
Oldsmobile
Achieva "N" 3T40 & 4T60-E
Pontiac
Grand Am "N" 3T40 & 4T60-E
Fig 1: Identifying Hydra-Matic Products
G91B11289Courtesy of GENERAL MOTORS CORP.