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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 .

Fig 1: Identifying Hydra-Matic Products
G91B11289Courtesy of GENERAL MOTORS CORP.
FWD TRANSAXLE APPLICATION

Manufacturer & Model Body Transmission(s)
Buick
Century "A" 3T40 & 4T60
LeSabre "H" 4T60-E
Park Avenue "C" 4T60-E
Regal "W" 4T60 & 4T60-E
Riviera "E" 4T60
Skylark "N" 3T40
Cadillac
DeVille/Sixty-Special "C" 4T60
Eldorado "E" 4T60-E
Seville "K" 4T60-E
Chevrolet
Beretta "L" 3T40
Cavalier "J" 3T40
Corsica "L" 3T40
Lumina "W" 3T40, 4T60 & 4T60-E
Oldsmobile
Achieva "N" 3T40
Cutlass Ciera "A" 3T40 & 4T60
Cutlass Cruiser "A" 4T60
Cutlass Supreme "W" 3T40, 4T60 & 4T60-E
Eighty-Eight "H" 4T60-E
Ninety-Eight "C" 4T60-E
Pontiac
Bonneville "H" 4T60-E
Grand Am "N" 3T40
Grand Prix "W" 3T40, 4T60 & 4T60-E
Sunbird "J" 3T40
RWD TRANSMISSION APPLICATION

Manufacturer/Model Body Transmission(s)
Buick
Roadmaster "B" 4L60
Cadillac
Fleetwood "D" 4L60
Chevrolet
Camaro "F" 4L60
Caprice "B" 4L60
Corvette "Y" 4L60
Pontiac
Firebird "F" 4L60