Circuit Description
WARNING: This page does not describe the selected car, but rather 14 other vehicles, including the 1998 GMC Savana Special, 1998 GMC Savana Camper Special, 1998 GMC Savana, 1998 Chevrolet RV Cutaway, and 1998 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
VCM commands Torque Converter Clutch (TCC) Pulse Width Modulated (PWM) solenoid on and off through ground circuit. When VCM grounds (energizes) TCC PWM solenoid, solenoid stops converter signal oil exhaust. This causes converter signal oil pressure to increase and shift TCC valve. When TCC PWM solenoid is de-energized, solenoid will exhaust fluid and release TCC. DTC P0741 will set if VCM detects a high torque converter slip when TCC is commanded on.