my driver side window will not go down replaced the motor what else could it be

Hello, it is prudent to check for power and ground at the motor before replacing it. Sounds like maybe you have an issue with the command to the window, likely at the master window switch. But please: DON'T GUESS! Test it. For the cost of replacing the motor unnecessarily already, you may have been able to diagnose and repair what's really wrong with the car. Good luck.