under the hood by the engine
The 2002 Chevrolet trailblazer windshield wiper motor should be replaced, when the windshield wipers are skipping. The windshield wiper motor can be located in the engine compartment.
A bad relay switch will cause the windshield wipers to not turn off. Replace the relay switch and the windshield wipers should turn off.
Take a ruler and measure them and you will know.
The windshield wiper relay switch, on your 1999 Cadillac Deville, are located mounted to the firewall in the engine compartment. The relay switch will be next to the windshield wiper motor.
switch them on
There is no button to operate the headlight wipers. The headlights washers and wipers are activated along with the windshield wipers when you use the windshield washer by pulling the wiper switch towards you.
The windshield wiper switch is broken which is located on the windshield wiper motor. You need to replace the whole motor to fix this.
remove the wipers, turn on wiper switch, turn off switch, reinstall wipers @ bottom position torque nuts enough to secure the arm. turn on switch readjust as needed.
The windshield wiper relay switch can be found on the firewall in the engine compartment. The windshield wiper relay switch will be on the passenger side of the firewall.
A bad fuse may be the cause of windshield wipers not working on a 1998 Lumina. The switch that activates the wiper motor is another possible cause for the wipers not working.
Under the cowl at the base of the windshield, on top of the wiper motor, three T20 Torx screws to remove.
If the windshield wipers work when pushing the lever down but not when they are turned on all the time, the problem could be in the wiper motor relay switch. There are two different relay switches for the windshield wipers, so that if the one fails a person can still clear the windshield manually.