GM Service Manual Online
For 1990-2009 cars only

Torque Converter Clutch PWM Solenoid

Important: TCC PWM solenoid resistance should be 10-11 ohms when measured at 20°C (68°F), and 3-15 ohms when measured at 100°C (212°F).

The torque converter clutch PWM solenoid controls the fluid acting on the converter clutch valve, which then controls the TCC apply and release. This solenoid is attached to the control valve body assembly within the transmission. The TCC PWM solenoid provides smooth engagement of the torque converter clutch by operating on a negative duty cycle percent of ON time.

If a fault is detected in the TCC PWM circuit, code 083 will set.