List of GM transmissions

General Motors is an innovator of automatic transmissions, introducing the Hydra-Matic in 1940.^[1] This list includes some GM transmissions.

Automatic transmissions

Early models

The GM Hydra-Matic was a success and installed in the majority of GM models by 1950. Through the 1950s, all makers were working on their own automatic transmission, with four more developed inside GM alone. All of GM's early automatic transmissions were replaced by variants of the Turbo-Hydramatic by the 1970s.

1940–1967 Hydra-Matic — Oldsmobile (now the trade name for all GM automatic transmissions)
1948–1963 Dynaflow — Buick
1950–1973 Powerglide — Chevrolet (also used by Pontiac and Holden)
1957–1961 Turboglide — Chevrolet (V8 models only, except Corvette)
1958–1959 Flightpitch — Buick
1961–1963 Dual Path Turbine Drive — Buick
1961–1964 Roto Hydramatic — Oldsmobile/Pontiac (also used by Holden)
1964–1969 Super Turbine 300 — Buick/Oldsmobile/Pontiac (Oldsmobile Jetaway)
1968–1969 Torquedrive — Chevrolet (manually shifted automatic, 6 cyl only)
1956-1964 Jetaway-315

Turbo-Hydramatic

The Turbo-Hydramatic was used by all GM divisions, and formed the basis for the company's modern Hydramatic line. The basic rear-wheel drive Turbo-Hydramatic spawned two front-wheel drive variants, the transverse Turbo-Hydramatic 125, and the longitudinal Turbo-Hydramatic 425. A third variant was the light-duty rear wheel drive Turbo-Hydramatic 180 used in many European models.

Heavy-duty rear wheel drive

1971–19?? 3L80HD (heavy duty version of TH400)

Medium-duty rear wheel drive

1964–1992 Super Turbine 400/TH400/3L80
1969–1986 TH350/TH350C/TH375B/TH250/TH250C
1972–1976 TH375 — Light duty version of TH400
1976–1987 TH200/TH200C
1981–1990 TH200-4R
1982–1993 TH700R4/4L60

Light-duty rear wheel drive

1969–1998 TH180/TH180C/3L30 — 3-speed European/Asian model. Also manufactured and used by Holden as the Trimatic transmission.

Transverse front wheel drive

1980–1999 TH125/TH125C/3T40 — 3-speed light-duty
1984–1994 TH440-T4/4T60 — 4-speed medium-duty

Longitudinal front wheel drive

1966–1978 TH425 — 3-speed
1979–1981 TH325 — 3-speed
1982–1985 TH325-4L — 4-speed

Electronic Hydra-Matics

The next-generation transmissions, introduced in the early 1990s, were the electronic Hydra-Matics based on the Turbo-Hydramatic design. Most early electronic transmissions use the "-E" designator to differentiate them from their non-electronic cousins, but this has been dropped on transmissions with no mechanical version like the new GM 6L80 transmission.

Today, GM uses a simple naming scheme for their transmissions, with the "Hydra-Matic" name used on most automatics across all divisions.

3/4/5/6	L/T	##	-Elll
Number of forward gears	L=Longitudinal T=Transverse	GVWR rating	"E" for Electronic "HD" for Heavy Duty

First-generation longitudinal (Rear Wheel drive)

1991–2001 4L30-E — 4-speed light-duty (used in BMW, Cadillac, Isuzu, and Opel cars)
1992– 4L60-E/4L65-E — 4-speed medium-duty (used in GM trucks and rear-wheel-drive cars)
1991– 4L80-E/4L85-E — 4-speed heavy-duty (used in GM trucks)

First-generation transverse (Front Wheel drive)

1995–2010 4T40-E/4T45-E — 4-speed light-duty (used in smaller front wheel drive GM vehicles)
1991–2010 4T60-E/4T65-E/4T65E-HD — 4-speed medium-duty (used in larger front wheel drive GM vehicles)
1993–2010 4T80-E — 4-speed heavy-duty (used in large front wheel drive GM vehicles, only with Cadillac NorthStar V8.

Second-generation longitudinal (Rear Wheel drive)

2000–2007 5L40-E/5L50 — 5-speed medium-duty (used in Cadillac's Sigma vehicles)
2007– 6L45/6L50 — 6-speed medium-duty (used in GM Sigma platform cars)
2006– 6L80/6L90 — 6-speed heavy-duty (used in GM trucks and performance cars)
2014– 8L90 — 8-speed heavy-duty (used in GM trucks and performance cars)
2016– 8L45 — 8-speed light-duty (used in GM luxury cars)

Second-generation transverse (Front Wheel drive)

2008– 6T30/6T40/6T45 — 6-speed light-duty
2006– 6T70/6T75 — 6-speed medium-duty

Other automatics

Aisin AF33 — 5-speed transverse automatic made by Aisin AW Co., Ltd.
Allison 1000 Series — 6-speed longitudinal automatic made by Allison Transmission
Saturn MP6/MP7 — 4-speed automatic developed by Saturn for use in the S-series from 1991-2002
VTi transmission — continuously variable transmission

Future

9-speed automatic transmission
Ford 10-speed automatic transmission*

- *This transmission is of Ford Motor Company's own in-house design, with Ford filing the design patents. Ford will let GM use the 10-speed transmission as part of their joint venture agreement. In-return, General Motors will let Ford use its GM designed 9-speed transmission (transverse gearbox) for front-wheel drive cars.^[2] ^[3]

Manual transmissions

Longitudinal transmissions

Aisin AR5/MA5 — 5-speed longitudinal manual made by Aisin
Aisin AY6 — 6-speed longitudinal manual made by Aisin
Getrag 260 — 5-speed longitudinal manual made by Getrag
Muncie M20 — 4-speed longitudinal wide ratio manual transmission made by Muncie
Muncie M21/M22 — 4-speed longitudinal close ratio manual transmission made by Muncie
Muncie M62/M64 — 3-speed longitudinal transmission made by Muncie
Muncie SM420 - 4 speed manual used up to 1967, very similar to sm 465 except small changes to gear ratios and location of reverse.
Muncie SM465 — 4 speed longitudinal manual used in 68- 91 Chevy 1/2 3/4 and 1 ton trucks
New Venture Gear NV1500 — 5-speed longitudinal manual made by New Venture Gear
New Venture Gear 3500/4500 — 5-speed longitudinal manual made by New Venture Gear
Tremec T-5 — 5-speed longitudinal manual made by Tremec; formerly made by Borg-Warner
Tremec T-56 — 6-speed longitudinal manual overdrive made by Tremec; formerly made by Borg-Warner
Tremec TR-6060 — 6-speed longitudinal manual overdrive made by Tremec
ZF S6-650 — 6-speed longitudinal manual made by ZF Friedrichshafen
Tremec TR-6070 — 7-speed longitudinal manual overdrive made by Tremec

Transverse Transmissions

F23 — 5-speed transverse manual manufactured by Getrag
F35 — 5-speed transverse manual manufactured by Saab in Gothenburg, Sweden
F40 — 6-speed transverse manual manufactured by FGP Germany
Getrag 282 — 5-speed transverse manual designed by Getrag and manufactured by Muncie Getrag
Getrag 284 — 5-speed transverse manual designed by Getrag and manufactured by Muncie Getrag
MP2/MP3 — 5-speed manual developed by Saturn for use in the S-Series from 1991-2002

References

↑ "Hydra-Matic History: The First Automatic Transmission". Ate Up With Motor. 2010-05-29. Retrieved 2014-01-15.
↑ "Exclusive: An Inside Look At Ford’s New 10 Speed Transmission". http://www.thetruthaboutcars.com/. Retrieved 2015-03-16. External link in |publisher= (help)
↑ Brooke, Lindsay. "Ford and GM finally consummate 9- and 10-speed joint development". articles.sae. SAE International. Retrieved 20 March 2016.

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