What controls a 4L60E transmission?
The 4L60, along with many transmissions of its generation, was controlled by a hydraulic system. This means that a series of valve pressures made the transmission shift gears. GM made the jump to electronic shifting control with the 4L60E (Electronic shifting control).
Where is a transmission control module located?
The transmission control module is usually located at the rear of the transmission case, precisely under the cover. It is located below the engine control module. On some models, it can also be found under the hood near the battery or under the interior center console.
How does a transmission control module work?
A transmission control module is an electronic mechanism that collects data and processes signals within your transmission in order to regulate the transmission’s gear shifting. Without this mechanism, your transmission wouldn’t be able to shift gears effectively and consistently.
What is an automatic transmission controller?
A transmission control unit (TCU), also known as a transmission control module (TCM), or a gearbox control unit (GCU), is a type of automotive ECU that is used to control electronic automatic transmissions.
What is the gear ratio of a 4L60E?
The main hiccup on the 4L60E is its gear ratios – 3.06 in first and 1.62 in second, which meant you were getting a massive amount of torque in first gear, before dropping down to about half that power in second.
What controls shifting in automatic transmissions?
All automatic transmissions use a control module to regulate speed, gear changes, and clutch engagement. The TCM makes decisions based on the information it receives from the engine, making it the key to shifting gears and changing the speed. A powertrain control module also controls engine and transmission functions.
When should a PCM be Reflashed?
You may want to consider reflashing after installing an aftermarket performance cam, bigger cylinder heads, a different intake manifold or fuel induction system to compensate for changes in airflow. A professional tune is highly recommended when used in conjunction with other aftermarket parts.