Re: 4L60E Torque Converter Clutch manual override
I would think if you jump power directly to the TCC solenoid it would lock up regardless of speed, so when you try to come to a stop it would buck and kill the engine like driving a manual and not pressing the clutch when coming to a stop. That is an assumption though since they are PWM controlled so putting 12v directly to it may or may not work. Why are you wanting to test it? Generally you can feel them unlock by slightly pressing on the brake while maintaining a set speed to see if its locking or not. They use PWM to control them so you dont feel them actually lock up.
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