Transmission Component and System Description

WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. However, it is still accessible from the selected car via links, so may be relevant.

The mechanical components of the 6T30/40/45/50 are as follows:

A torque converter with an electronically controlled capacity clutch (ECCC)
Gear-type fluid pump assembly
1 - 2 - 3 - 4 and low and reverse clutch housing assembly
4 - 5 - 6 and 3 - 5 reverse clutch housing assembly
2 - 6 clutch assembly
Low and reverse clutch (one way clutch) assembly
Control valve body assembly
Drive sprocket, driven sprocket and link assembly
Front differential carrier assembly
Input Carrier Assembly
Reaction Carrier Assembly
Output Carrier Assembly

The electrical components of the 6T30/40/45 are as follows:

Output speed sensor assembly
Input speed sensor assembly
Manual shift shaft with internal mode switch
Control solenoid valve assembly, which contains the following components:
- Transmission control module (TCM)
- 5 variable bleed line pressure control (PC) solenoids
- Transmission fluid pressure (TFP) switch assembly
- Torque converter clutch (TCC) pressure control solenoid
- shift solenoid
- Transmission fluid temperature sensor

For more information, refer to Electronic Component Description .