General Motors · 1990–2011
GM 4T60-E transmission
The 4T60-E (and similar 4T65-E) is a series of automatic transmissions from General Motors. Designed for transverse engine configurations, the series includes 4 forward gears. The 4Txx family is an evolution of the original Turbo-Hydramatic 125 transverse automatic introduced in the late 1970s and the Turbo-Hydramatic 440 transmission developed in the mid-1980s. The "-E" transmission is electronically controlled and features an automatic overdrive transaxle with an electronically controlled torque converter clutch. The 4T65 is built at Warren Transmission in Warren, Michigan. Gear ratios: Drive and Driven sprocket combinations and ratios 33 Drive / 37 Driven creates a 0.892:1 ratio 35 Drive / 35 Drive creates a 1.000:1 ratio 37 Drive / 33 Driven creates a 1.121:1 ratio Example - 3.29 diff ratio divided by 1.121 = 2.93 3.29 diff ratio divided by .892 = 3.69
Text from Wikipedia (CC BY-SA 4.0).
Predecessor: Turbo-Hydramatic 125 · Successor: GM-Ford 6-speed automatic transmission
All General Motors GM 4T60-E transmission data: UK builds, safety, recalls, model years →
4T60-E
For 1991 GM introduced the 4T60-E which was a 4T60 with electronic controls, first seen on the new Buick Park Avenue. One benefit was that the cruise control was integrated into the gearbox' electronic control module, improving the ability to maintain a set speed while avoiding needless shifting, thus lowering fuel consumption and noise levels. By the mid-1990s, the 4T60-E was the transmission of choice in nearly every front-wheel drive GM vehicle with the exception of compacts. A heavy-duty 4T60-E HD was produced in 1996 for the supercharged GM 3800 engine The 4T60-E was phased out in favor of the 4T65 beginning in 1997. The 4T60-E featured a 245 mm (9.6 in) torque converter with varying stall speed and gear ratios. For example, a 1995 Beretta features a 1650 rpm stall converter as opposed to a 1999 Century converter with a stall of 2095 rpm. In the 4T60 family of transmissions, the combination of drive-chain sprocket ratios and the differential gear ratio together offer up to 12 different possible final drive ratios to allow the transmission family to cover various engine and vehicle applications. Replacing a complete transaxle should only be done if a unit is verified to be the same as the unit it replaces, as in addition to the up to 12 variants of the final drive ratio, different applications and years can and will have incompatible electrical connectors. The use of an incorrect transaxle will result in undesired operation, up to and including total non-functioning of the transaxle. Gear ratios: Applications: 4T60-E 1994-1999 Buick Century 1992-1997 Buick LeSabre 3800 V6, L27 1991-1996 Buick Park Avenue V6 3.8 L 1991 Buick Reatta 3800 V6 1993-1997 Buick Regal 1991-1993 Buick Riviera 3800 V6 1995-1996 Buick Riviera L67 & L36 1994-1998 Buick Skylark 1991-1993 Cadi
4T65-E
The 4T65-E was introduced to replace the 4T60-E in 1997. The 4T65-E included a larger 258 mm torque converter for some models and many other changes to improve reliability. It is able to handle vehicles up to 6500 lb (2948 kg) GVWR with up to 280 ft·lbf (380 N·m) of torque. A number of final drive ratios are available, with many distinct models. Starting in mid year 2000 models, all 4T65-E models received an upgraded valve body. Starting in 2003 the internal electronics were changed, hardened 4th gear shaft, ratcheting sprags for input and third gear were added. The last application was the 2011 Chevrolet Impala as GM has transitioned to the 6T70 family transmissions for 2012. Models: M15 — 245 mm (9.6 in) torque converter MN3 — 258 mm (10.2 in) torque converter MN7 — 258 mm (10.2 in) torque converter and heavy-duty gearbox (see 4T65E-HD) MD7 — 245 mm (9.6 in) torque converter (Chinese version) M76 — 245 mm (9.6 in) torque converter (with all-wheel drive capability) Gear ratios: Applications: M15 2.86:1 Buick LaCrosse 3.8 (05–09) Chevrolet Impala LA1 Chevrolet Monte Carlo LA1 3.05:1 2000-2005 Buick Century V6 3.1 L 1997–2003 Chevrolet Lumina/Monte Carlo V6 3.4 L/3.8 L 1997–2003 Chevrolet Venture V6 3.4 L 2000–2003 Chevrolet Impala V6 3.4 L/3.8 L 1997–2001 Chevrolet Lumina/Monte Carlo V6 3.1 L 1998-1999 Oldsmobile Intrigue V6 3.8 L 1998-2003 Pontiac Grand Prix V6 3.1 L/3.8 L 1997-2004 Pontiac Grand Prix "GT" 3800 V6 (L36 Motor) 3.29:1 M15 Buick Rendezvous Buick Terraza Chevrolet Uplander Pontiac Montana SV6 Pontiac Aztek Saturn Relay 3.29:1 M76 Buick Rendezvous Chevrolet Impala 9C1 Oldsmobile Aurora V6 Oldsmobile Intrigue Autobahn Package/PCS Oldsmobile Silhouette Pontiac Aztek 3.69:1 2006-2007 Chevrolet Malibu (SS Models) V6 3.9 L M15 Buick LeSabre Pontiac Bonnevill
Sections adapted from Wikipedia (CC BY-SA 4.0); text is shortened. Read the full article for the complete history and citations.
Specifications
- name
- 4T60-E/4T65-E
- Production
- 1990–2011
- Manufacturer
- General Motors
- Class
- 4-speed transverse automatic transmission
- Predecessor
- Turbo-Hydramatic 125
- Successor
- 6T70
Specification summary from Wikipedia (CC BY-SA 4.0). Check the linked sources for citations.
Sources
- Wikidata — https://www.wikidata.org/wiki/Q5513821CC0 1.0 · retrieved 2026-10-01
- Wikipedia — https://en.wikipedia.org/wiki/GM_4T60-E_transmissionCC BY-SA 4.0 · Text © Wikipedia contributors; revision 1349814946 · retrieved 2026-10-01
- Car Model Index — https://models.autoculturesociety.com/Compiled record. Sources that do not permit reuse are not copied; this index is credited instead.