Engine Controls - Tests W/codes - Electronic Transmission: Specifications Chevrolet Pickup C3500

CODE 69, TORQUE CONVERTER CLUTCH STUCK ON

The PCM commands the TCC PWM solenoid on by modulating the signal fluid on the converter clutch shift valve. The TCC apply fluid applies the torque converter clutch.

Note. Test numbers refer to numbers on diagnostic chart.

1. Checks the mechanical state of the TCC. When the TCC is commanded off, the slip speed should increase.

See also:
• COMPUTER RELEARN PROCEDURES