Passanger side windshield wiper, chevy celebrity 1989

There are nuts on the wiper arm posts under plastic caps[ if still there ] they looen sometimes and the arm won't move turn off the wipers so the 'park' and check the nut for tightness - should be quite snug. it that dosen't fix it then you have a linkage problem from the motor.

your wiper transmission has dislodged itself from the wiper arm on the passanger side...
Take hold of the passanger side wiper arm and see if it moves independantly ( not in sequence with the drivers side wiper arm).

You may be required to remove the fresh air intake valance and install a new ( used?) wiper transmission assembly...
What happens is the plastic cups on the wiper transmission wear out and pop off...
easy fix ya !

I had the same problem with my 99 Silhouette...after they put in a new windshield wiper kept going over the side of the window and tearing the blades up....ended up that the wiper arm was out of adjustment ....they came back and readjusted and it was perfect

Yes you can adjust them yourself. First you need to check that the wiper arms are not bent. If not, remove the cap at the wiper arm base, under it u will find a nut, remove this nut. you should now be able to remove the wiper arm. (it is comon for caravan wiper arms to be corroded on. If the arm dosen't come off, you may need to heat up the wiper arm with a propane torch. be careful not to melt the plastic cowel under the arm. OR you can use a wiper puller or a battery puller. do not force it, you can break the arm, DO NOT PRY AGAINST THE COWEL OR WINDSHIELD.
Once both arms are off, turn your van on and turn the wipers on. watch the wiper posts, turn the wipers off and watch the wiper posts return and stop in the "parked" position. Turn the van off. Install the passanger wiper arm first, it is positioned closest to the bottom an inch or two above the black cowel. It should be parrallel to the cowel. next install the drivers side wiper arm. it is positioned about 4 inches above the passanger wiper. again running parrallel to the cowel and passanger wiper. tighten the lock nuts down (do not over tighten) wet down your windshield with glass cleaner or windshield washer fluid and test wipers. If they still hit you can lower the passanger one a little or raise the drivers one a little (careful you don't raise the drivers one too much or it will 'jump' off the windshield at the top of the wipe).
good luck, hope this helps.

The clip should lift up and then the pin should allow the blade to come off, you should have to use slight pressure on one end or the other

if there is not a nut on the arm raise the wiper off of the windshield and take a small flat screwdriver and pull the clip out on the side of the arm then rock the arm back and forth while pulling it should pull right off

Either the shaft teeth are worn or the screw is stripped. I recommend using JB Underwater Weld for $5

more than likely your passenger wiper just needs to be tightned.

Check the retainer nuts on the wiper arms. One might be loose. 

disconnect the negative battery post.
disconnect the harness from the wipper motor, using a 8mm socket, loosen the two crank arm socket screws and lock-washers until the socket releasesfrom the crank arm ball. do not remove the crank arm from the motor.
using a 10mm socket, remove the three motor retaining screws, slide the motor out of the slot in the bracket.
To install make sure the wipers are in the park position, slide the motor into the slot in the bracket. using the 10mm socket, install the three motor retaining screws and tighten to 49-80inch lbs.Using the 8mm socket tighten the two crank arm socket srews and lock washers. connect the harness to the wiper motor.connect the negative battery cable