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Re: how to realign wipers after replacing wiper motor
SHUT WIPERS OFF AND ALLOW THEM TO PARK
Shut wipers off & allow them to stop in what should be park position. Now lift caps at pivots, loosen nuts, lift arm slightly and move it to bottom of windsheild, where you feel it was before when off. Now tighten nuts (snug) and do same to other arm. Now turn them on,let them wipe a couple of times then shut off again and see where they stop, if good snug up nuts, snap cap back over & done, if not, repeat as above on movement where you want it.
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The electrical mechanism has a rotating arm with a wiper contact, whose objective is to prevent the wipers stopping in the middle of their travel, thus this small wiper contact continues to supply current to the wiper's motor until they reach the end position. From time to time, the wiper (or the electrical track support) rotates out of proper alignment, and just keeps the winshield wipers running. you need to disassemble the motor of the wipers, inside there is a small arm with a contact point, it need to be realigned. It is not difficult, but some dexterity is needed to be able to properly reassemble the motor.
This is a very common problem on the Impalas. I had to fix my 2002 Impala. The wipers will point straight up. There is a tab that may be bent near the wiper motor shaft. Open the hood. You need to remove the driver's side wiper arm. You need to pop-off the round black cover and there's a nut underneath. Then remove the plastic cover between the windshield and the engine compartment. See the pictures below, Look for a bent TAB. it's tough, but bend it back with pliers and/or big screwdriver. If the tab is OK, look for a missing or broken spring. For that, you'll need to get the replacement part from the dealer. May be: park mechanism, part #12494832
i may be mistaken on if this applies to your model year but if the rear wiper does not work then check the fuse for rear wiper and replace if blown. make sure rear wiper switch is off and wiper is parked.if air bag light goes out after a few seconds then the rear wiper motor is bad causing fuse to blow. air bag module gets power for its fuse through wiper fuse.if wiper is not parked then fuse may blow when you turn yhe key on.you have two choices. replace wiper motor or remove tailgate door panel and unplug the motor
There are no adjustments on the wipers. The arms come off to realign. Pop the wiper arm cap off with a very small flathead screwdriver theres a liitle opening slot to do this. Remove the nut. Pull wiper off straight, use pulley if needed. If the tenson is gone in the wiper arm replace. The springs go bad in the rear arm from dirt.
The wipers are parking in the middle because the timing mechanism is off. Once they start doing this it seems to continue to happen so the 1st suggestion is to replace the wiper motor. If U don't want to spend the $ right now it's a pretty easy fix to reset the timing. Park the wipers & remove the wiper arms. Then remove the plastic cowling that covers the wiper motor & the motor assembly. Turn the wiper assembly over without turning the motor. Remove the nut on the arm of the motor. Repostion the arm pointing away from the closet wiper directly inline with the short arm. reassemble.
Could be many things. Check the fuse and relay under the hood, if you can hear the wiper motor running but the wipers arent working then they are off the track. and finally in non of those are it then replace the wiper motor.