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Here you'll find interesting reading on not only the 4L60E, but also transmissions in general and more.

July 29, 2014

torque converter

The Mysterious Torque Converter

They're not much to look at, kinda heavy and impossible to get inside of without a lathe to cut them open. Behold the most incredible component in an automobile drivetrain: the torque converter. More than simply a fluid coupling, it's a physical science masterpiece! Read More...

July 22, 2014

cleaning a part

Parts Cleaning: Be Careful!

You can damage transmission parts by using the wrong cleaning solution. Cleaning a bare aluminum case with a water based cleaner is fine, but water on parts such as steel plates, shafts and bearings will cause problems from oxidation and even worse; water on solenoids, friction plates and bands is a disaster. Read Here...

July 15, 2014

homemade shifter

Make a 4L60E test shifter

Here's a simple electronic device you can make with only a few switches, a project enclosure and a salvaged wiring harness connector. It allows direct control of shift solenoids A , B and TCC solenoid by bypassing the vehicle computer. Control all 4 forward gears independently to determine if an electronic problem is in the transmission or not. Read Here