I hate to be the bearer of bad news, but the only thing you are supposed to hear when your wipers are on is the squeegee effect on your windshield. Troubleshoot the issue or get them looked at pronto.
Obviously, check and ensure there is nothing under the passenger and driver's side cowls that is binding the arms. The cars are way too new for the arms to be rusted, but make sure everything is as it should be; free and clear.
If you choose to troubleshoot the motor, do the following... (As always, if you don't know what you're doing? Then don't.)
1) Remove the driver's and passenger's side wiper arms (Cap and Nut, 21 lb.ft)(Use your non-wrenching hand to hold the wiper in place when you torque the nut so as to not stress the motor.)
2) Remove the left side (Driver's Side) cowl cover.
3) Disconnect the Four Pin (4P) connector from the wiper motor.
The four pin connector should have five banks, but only four in use.
0 2 1
4 3
4) Connect battery power (+) to the 1 pin and ground (-) to the 2 pin. The motor should run at low speed.
5) Connect battery power (+) to the 3 pin and ground (-) to the 2 pin. The motor should run at high speed.
If the motor fails to run or does not run smoothly, replace it.
If this is the case and you are going to do the work, PM me so I know you're expecting a response and I'll send you further instructions.
Jay