How do you fix the throttle in a automatic tranmission get stuck?

If the throttle in an automatic transmission is stuck, first ensure the issue is not caused by a floor mat or foreign object obstructing the accelerator pedal. Next, check the throttle linkage and cable for any signs of wear or damage; lubrication may help if they're sticking. If the problem persists, inspect the throttle body and sensor for faults. If you're unsure or unable to fix it, consult a professional mechanic for a thorough diagnosis and repair.