This is different for many makes and models. To be more specific you need the year, make, and model of the vehcile. In general most but not all wipers are adjusted by a nut at the base or bottom of the wiper arm where it enters the cowl of the vehicle. Sometimes this nut is coverd by a piece of plastic or metal that will pop off or is hinged to access the nut. If this is the case loosen that nut, move the wiper arm where you want it, and tighten the nut.
You have to pop the wiper arm off(there should be a blot some cars differ) and adjust it where you would like it.
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Under the hood, on the firewall, drivers side.
If the windshield wipers are not working on a 1990 Chevy Lumina, the problem could be with the wiper motor, the wiper motor relay, or a fuse. The least expensive fix to this problem will be replacing the fuse if it is blown.
it should be behind the cowel on the drivers side above the master brake cylinder.
it is in the back right corner, in front of the drivers side....tucked under the dash
should b connected to wipers on firewall somwhere usually drivers side
The windshield washer motor is located on the passenger side firewall
If windshield wipers are stuck in position and won't move, I would say that the windshield wiper motor needs replacing. This happened to me last year.
If it is electric windows it is the motor which needs replacing or it could be the regulator
Your wiper arms that run from the wiper motor to the windshield wipers may be binding and need to be replaced
Remove the windshield wiper arm from the windshield wiper motor. Remove the wiring harness. Remove the retaining nut. Reverse the process to install the new windshield wiper motor.