2003 impala wipers not working. Replaced motor still nothing. Have power at plug to motor

Depending on what your trying to do with wipers, I'd want to see voltage on the gray and or purple wire. See the black wire at the bottom that is ground, a good ground is a must. Hey Jeff, I'm not trying to bug you. If I spend time trying to look up info, I'm going to post it. I don't care if the question has already been answered. Have a good day.

Not turning off with the switch is usually caused by a faulty park switch in the wiper motor.

Replace the wiper motor. It is under the wiper blades. remove the blade arms, remove the plastic bezel, remove the motor. The motor has the delay and speeds built in it.

you need to check power and ground to your wiper motor if you have power and ground at electrical connection to motor then motor is bad, if your not getting power and ground then you need to look into wiper switch,

blown fuse, faulty wiper motor or faulty wiper switch. Possible you got a bad new wiper motor if you replaced everything in the order you wrote it in.

try this fix
remove wiper arms from where they connect on car
turn wiper moter on then off. turn ignition off
if wiper motor is good it should put spline in off position and now all you need to do is replace wiper arms in the correct position they would be in when wipers are turned off

Here are a few other things to check beside the fuse and relay:

Check Wiper Motor - the wiper motor is the driving force of the windshield wiper. Feel the motor and listen to a humming sound. If there is no humming, the motor is the problem. Check if the motor is working properly and see to it that its electrical connections are made properly. If you find that the motor is dead and beyond repair, get it replaced immediately.

Check For Break in Connecting Wires - the connecting wires of the motor sometimes go loose and that may cause the windshield wipers to stop working. Also check the battery plug connection which the motor has. Connecting the loose wires properly or fixing/replacing the plug might solve your problem.

Check Wiper Switch - another wiper assembly part that can malfunction is the wiper switch itself. Check for switch malfunction and if you find that is indeed the problem, get it replaced from a mechanic.

Check for Bent Wiper Arms - bent wiper arms can cause the operation of the wipers to be hampered. If the wiper arms are bent beyond repair, get them replaced immediately.

there is a windsheld washer pump in the system
which can be changed out without removing the wiper motor

You need to unplug electrical plug from motor and turn switch on in car and also key to on, and test light leads on plug if test light lights with switch on than its wiper motor if not its the switch.

check your gears.on your wiper motor to wiper blade.