1999 Buick Centery passenger side windshield wiper

at the base of the wiper arm theres a small cap to cover the point where the arm is mounted to the mechanism,remove the cap and tighten the nut ,you may have to loosen and tighten this nut a few times to adjust the arc of movement of the arm,ie,it may move too far across and foul the other wiper or too far down and foul the window lip,a bit of trial and error should see it working as good as new,
its nothing to do with fuses or electrics of any sort its just a loose nut on the wiper arm mount is all

Either the wiper arms are loose or stripped on the pivots or the wiper linkage is broken. Try tightening the arm to pivot bolt. If that doesn't work, remove the plastic cowling and examine the linkage. You can buy new linkage for it.

If only one wiper arm is out of sync it means that arm has come loose. To repair it take that arm off and activate the wiper to get it into park position. then re- mount the bad arm in the park position, making sure the nut is tight. Check the splines on the bad arm because they strip easily and sometimes have to be replaced if it does not tighten down

bent/broken wiper arms under the base of the windshield..remove the vent cover and service/replace broken parts.

Yes, there is a small cap at the base of the arm, you lift that cap up and find a nut. Loosen the nut and jiggle the arm until it slides up and off the splined shaft. Do not pry and it may help to spray some WD40 around the shaft threads and let it seep down into the splines. Then you put the arm back on just one spline counterclockwise. That way its maximum out sweep will be moved back while its inward will be a bit closer to the bottom of the windshield. It generally helps to put a piece of tape on the windshield along the wiper blade edge to mark the old position of the arm so you do not put it back on in the same position. If that does not help you, you may need to look into a new wiper transmission as yours has too much slop in it. But it costs nothing to try the first method.

You may want to remove the cover over the wiper nut and tighten it down. Make sure you don't exceed the torque settings. The nuts have a tendency to back off causing the wipers (or one wiper) to slip.

The wiper blades are probably generics, or your technician put the wrong blades on. (most likely generics). I would reccommend going to a Pontiac dealership and getting factory blades. OEM parts are highly reliable.

I usually fix this by bending the arm as low as possible to the base part just make sure the arm doesnt hit the glass handle when it sweeps

motor only drives one arm to wipe. the passenger side arm might be disconnected. you have to reomve parts and visulally inspect. you might need a bolt or a washer, but should be an easy realignment fix.

Check to see if the wiper motor moves the passenger side. If so, You may need to tighten the nut that connects the arm to the motor. Mine was stripped out because or snow & ice. So, I went to home depot and found a lock washer to fit.
Presto.... Nick from DE