4L60E

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The 4 L60-E (and the similar 4 L65-E ) is a range of 4-speed automatic transmissions made by General Motors Corporation . The gearbox was designed for motors installed lengthways. It is a further development of the Turbo-Hydramatic 700R4 , which was originally produced in 1982.

The 4L60-E and 4L65-E of Toledo transmission in Toledo (Ohio) and Romulus transmission in Romulus (Michigan) and Ramos Arizpe ( Mexico built).

The 4L60-E family transmissions use 2 shift solenoid valves, initially referred to as Solenoid A & Solenoid B. This was later changed to Solenoid 1-2 & 2-3 to comply with OBD II (On Board Diagnostics Revision 2) regulations. By activating or deactivating the solenoids in a pattern predetermined by the PCM, 4 different gear ratios can be selected. The solenoid pattern, sometimes referred to as the solenoid firing order, is as follows:

Solenoid pattern
1-2 solenoid 2-3 solenoid
1st gear on on
2nd gear out on
3rd gear out out
4th gear on out

There are two gearbox variants that are designed for different loads. The main difference between the two gearbox variants is the number of pinions in their planetary gears . The 4L60-E has four while the 4L65-E has five. Other components of the 4L60-E were reinforced when the 4L65-E was introduced. These were incorporated into the 4L60-E in 2002.

Gear ratios:
1 2 3 4th R.
3,059 1,625 1,000 0.696 2.29

4L60-E

According to General Motors' new naming convention, the THM700 was renamed "4L60". The electronic version is called 4L60-E (RPO M30). The renaming was done gradually. Beginning in 1993 for trucks, vans and SUVs, then in 1994 for rear-wheel drive cars.

In 1996 the “bolt-on” bell housing for S-10 trucks and S-10 Blazers was abolished and in 1998 for all other applications.

From 1998 a new 300 mm torque converter with a higher capacity was installed. The 4L60-E is designed up to a torque of 488 Nm.

Applications:

4L65-E

An updated series of the 4L60-E, the 4 L65-E (RPO M32), was installed on the 6.0l Vortec engine from model year 2001. It has five pinions in the front and rear planetary gears and another 3/4 clutch. Together with the improved, inductively hardened transmission input shaft, the load capacity has been extended to a torque of 515 Nm.

Applications: