An automatic transmission is a type of transmission used by motor vehicles that can automatically change gears while the vehicle is moving allowing the driver to focus on the other elements of driving instead of changing the gears manually. There are many different types of automatic transmissions. One of the most popular ones, especially in North America is the 4L60e transmission which was created by General Motors. It was specially designed for vehicles with longitudinal engine configurations and this series of automatic transmissions include 4 forward gears. This transmission was based on Turbo-Hydramatic 700R4 series first released in 1982. 4L60e transmission was first used in 1992. Today they are built at Toledo Transmission in Toledo, Ohio while in the past they were built at Ramos Arizpe, Mexico and Romulus Transmission in Romulus, Michigan. It is good to mention that there is another verison of this transmission called 4L65e, but this model has five forward gears and they are intended for heavy-duty tasks.
As we have mentioned before the THM700 was the inspiration for 4L60e. In fact the THM700 was renamed 4L60 and once the electronic version was available it finally became 4L60e. This version of automatic transmission was available for vans, truck and SUVs in 1993 and for rear wheel drive passenger cars in 1994. This didn’t stop the evolution in this automatic transmission. In 1996 General Motors included a bolt-on bell housing for trucks and in 1998 they have included a torque convertor which provides higher-capacity internal, better input shaft and style pump.
Today, the 4L60e series of automatic transmissions use 2 shift solenoids (once known as Shift Solenoid A & Shift Solenoid B and later changed to 1-2 Shift Solenoid and 2-3 Shift Solenoid in order to meet OBD II (On Board Diagnostics revision 2) standards and regulations. Thanks to the activation and deactivation of these two solenoids with the help of the PCM and the pattern it provides, four different gear ratios can be achieved.
There are many cars in which 4L60e transmission is used. There are also some models that are not produced any more, but used this transmission. The following is a list of all these vehicle models.
- C6 Corvette 2005
- Cadillac Escalade
- Cadillac Escalade EXT
- Chevrolet Silverado SS
- GMC Sierra Denali
- GMC Yukon Denali
- Hummer H2
- Holden Crewman (only for the 2004 version)
- Holden One Tonner (only for the 2004 version)
- Pontiac GTO 2005-2006 (M32, 3.46:1 final drive)
- Isuzu Axiom 2001
The non electronic version of 4L60 was used in many more vehicles.
Buick Roadmaster 1994–1996
Cadillac Brougham 1991-1992
Cadillac Fleetwood 1994–1996
Chevrolet Avalanche 2002-2008
Chevrolet S-10 Blazer
Chevrolet Camaro 1994–2002
Chevrolet Caprice 1994-96
Chevrolet Corvette 1994–2004
Chevrolet Impala SS 1994–1996
Chevrolet Silverado 1500-2500 (2500 with 6 bolt axle pattern)
GMC Jimmy 1993-?
GMC Sierra 1500-2500 (2500 with 6 bolt axle pattern)
GMC Yukon XL Denali
GMC vandura 1993-up
Holden Commodore (VR, VS, VT, VX, VY, VZ, VE) 1993–present
Holden Caprice (VR, VS, WH, WK and WL) 1994–2006
Pontiac Firebird 1994–2002
Pontiac GTO 2004-2006
Saab 9-7X 2005-2009