The 2001 Dodge Ram 2500's overdrive solenoid isn't a single, easily identifiable component like a separate unit. Instead, it's integrated
within the transmission's valve body. You won't find it as a distinct external solenoid.
To access it, you would need to remove the transmission pan and then the valve body itself. This is a fairly involved process requiring significant mechanical skill and specialized tools. It's not a job for a beginner.
