GM Service Manual Online
For 1990-2009 cars only

The mechanical components of this unit are as follows:

    • A torque converter with a torque converter clutch (TCC)
    • A drive link assembly
    • 4th and Lo/Reverse band assemblies
    • Forward, coast, 2nd and 3rd multiple disc clutches
    • Two planetary gear sets
    • Two sprag clutches, Forward and 2nd
    • One roller clutch, Lo
    • Three fluid pumps
    • Two control valve assemblies
    • A final drive assembly with a bolted on case extension

The electrical components of this unit are as follows:

    • Two shift solenoid valves, 1-2 and 2-3
    • A torque converter clutch pulse width modulated (TCC PWM) solenoid valve
    • A transmission pressure control (PC) solenoid valve
    • An automatic transmission fluid temperature (TFT) sensor
    • Two speed sensors: input and vehicle speed sensor
    • An automatic transmission internal mode switch (IMS)
    • An automatic transmission fluid pressure (TFP) manual valve position switch
    • An automatic transmission wiring harness
    • An automatic transmission wiring extension harness

Refer to Electronic Component Description .