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Servicing - A/T: Identification

A new system has been developed by Hydra-Matic to "functionally" describe its transmissions and transaxles. The new transmission designations, used throughout this manual, will indicate (in sequence) the number of speeds, type, series and major features (if applicable).

Refer to HYDRA-MATIC PRODUCT DESIGNATIONS  to reference each new designation.

HYDRA-MATIC PRODUCT DESIGNATION SYSTEM CODES

3 - No. Speeds: T - Type: 40 - Series: E - Features:
3 T - Transverse Based on E - Elect.
4 L - Longitudinal Relative A - AWD
5 M - Manual Torque Rating HD - Heavy Duty
HYDRA-MATIC PRODUCT DESIGNATIONS

Previous Designation New Designation
THM A-1 Hydra-Matic 3T40-A
THM F-7 THM F-7
THM R-1 Hydra-Matic 4L30-E
THM 125/125C Hydra-Matic 3T40
THM 180/180C Hydra-Matic 3L30
THM 200-4R (1) THM 200-4R
THM 400 Hydra-Matic 3L80
THM 440-T4 Hydra-Matic 4T60
THM 475 Hydra-Matic 3L80-HD
THM 700-R4 Hydra-Matic 4L60
(1) No change in designation.
FWD APPLICATION

Model Body Transmission(s)
Buick
Century "A" 3T40 & 4T60
Electra "C" 4T60
LeSabre "H" 3T40
Park Avenue "C" 4T60
Reatta "E" 4T60
Regal "W" 3T40 & 4T60
Riviera "E" 4T60
Skylark "N" 3T40
Cadillac
DeVille "C" 4T60
Eldorado "E" 4T60
Fleetwood "C" 4T60
Seville "K" 4T60
Chevrolet
Beretta "L" 3T40
Cavalier "J" 3T40
Celebrity "A" 3T40 & 4T60
Corsica "L" 3T40
Lumina "W" 3T40
Oldsmobile
Cutlass Calais "N" 3T40
Cutlass Ciera "A" 3T40 & 4T60
Cutlass Cruiser "A" 4T60
Cutlass Supreme "W" 4T60
Delta 88 "H" 4T60
Ninety-Eight "C" 4T60
Toronado "E" 4T60
Trofeo "E" 4T60
Pontiac
Bonneville "H" 4T60
Grand Am "N" 3T40
Grand Prix "W" 4T60
Sunbird "J" 3T40
Touring Sedan "C" 4T60
6000 "A" 3T40 & 4T60
RWD TRANSMISSION APPLICATION

Model Body Transmission(s)
Brougham "D" 200-4R & 4L60
Camaro "F" 4L60
Caprice "B" 200-4R & 4L60
Corvette "Y" 4L60
Custom Cruiser "B" 200-4R & 4L60
Estate Wagon "B" 200-4R & 4L60
Firebird "F" 200-4R & 4L60