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I would make an assumption as it is the wiper motor going bad. Most any I have seen the motor runs in a constant 360 degree revolution and not back and forth. The back and forth motion comes from the linkages under the plastic cowl in front of the windshield.
This is simple (none of the answers above were correct for me), but there was NO DOCUMENTATION to fix this. I couldn't find it anywhere on the NET either. You shouldn't need to replace anything. Your "eccentric" arm, that is directly connected to the motor, was reinstalled 90 degrees off. You need to unbolt the arm from the motor and rotate it 90 degrees to the proper position and reassemble. How?? Take off the motor/linkage cover and watch the linkage operate while someone turns the wipers on and off. Take note of the eccentric arm (bolted to the motor) when the wipers are at the bottom (where they SHOULD park). Then turn off the wipers and take note of the eccentric arm again. (with the wipers parked in the middle). Now you know where the arm IS and how you need to change it when you bolt it back on. Take out the assembly, loosen the bolt, and adjust to the proper angle and reassemble. This fixed mine the first time. (2004 Toyota Avalon).
yes google this problem and you will find that under the wiper motor is a plate with a metal tab that should be bent @90 degees. over time it bends down and will not contact the oter metal plate on motor.. you need to remove cap holding wiper arms on then remove wiper arm, then remove plastic cowling, the remove plastic cover over motor, then u will see tab bend it back up and u will be fixed. mark wiper arm position on shaft so you assemble in the same position
at the base of the wiper arms you will see a tab that will have a 90 degree bend to it. Take a table dinner knife or equivalant and gently pry it away from the arm. It will slide outward against the base of the arm. That will unlock it so you can pry the arm off. Some come off easy and some are stuck on good so be careful on the first try
yes google this problem and you will find that under the wiper motor is a plate with a metal tab that should be bent @90 degees. over time it bends down and will not contact the oter metal plate on motor.. you need to remove cap holding wiper arms on then remove wiper arm, then remove plastic cowling, the remove plastic cover over motor, then u will see tab bend it back up and u will be fixed. mark wiper arm position on shaft so you assemble in the same position
wiper arm has to be detach from pivot if u want to take cowl off,under cowl is wiper motor drive linkage that connects to pivots,now is it only wiper arm u want to change or is it some thing else?to remove wiper arm lift plastic at bottom of arm undo bolt and pry off wiper arm,on both sides if u want to take cowl off!
I just solved this problem last night with my '05 Impala, and ultimately the solution was what newton5083 stated above. Yet, it may also be this (I found it online somewhere):
You have bent or broken the "park tab" on the windshield wiper motor bracket. The correct way to fix this is to remove the wiper arms, wiper linkage and wiper motor from the wiper motor bracket, and install a new bracket. I just bent the tab back into place a couple times for our daughters 2005 Impala but it kept getting bent down again when they didn't take the time to make sure the wipers were not frozen to the windshield, or tried running the wipers to remove heavy snow on the windshield. So yesterday I fabricated a small piece of metal and bolted that to the bracket in the same place the tab stop was. If someone wants to access this bracket and tab- 1. Use a ½ inch or 13mm socket & ratchet or wrench to remove nuts on wiper arms. 2. They may make a special tool to remove the arms, I used a screwdriver and hammer to tap bottom of the arm to wedge them apart from the spindle. 3. Two small button-looking clips hold the drivers side cowl cover in place under the windshield. These are two-piece clips, pry up the center, than the outer piece. 4. Unclip the washer hose from cowl cover, than pull out plastic cover. 5. There is a smaller plastic cover with on plastic button head holding that cover in place. Gently pry under that clip to remove that cover. 6. Now you can see the wiper trans and bracket. You should see a small tab on that bracket that looks pushed down and bent or possible a square small hole with some torn off metal where the tab broke off. 7. Remove small plastic cover over the wiper transmission and you can see a small spring-loaded arm underneath the wiper transmission assembly. 8. You need to find something to pry that tab back up so when the wipers are running that spring loaded little arm just snaps past the tab running clockwise. It's when you shut off the wipers that the wiper transmission assembly reverses rotation counter clockwise and the small spring loaded arm underneath hits that tab stop, than the wipers will go all the way down and shut off as they should. Once that tab stop gets bent out of the way the little spring loaded arm has nothing to stop the wiper transmission assembly so it keeps traveling counter clockwise until some other stop shuts the wipers off straight up on the windshield.
There is a revised bracket part # which is supposed to be more durable, GM part #12368639. Here is a copy of the TSB which points out this problem: Bulletin No.: 05-08-43-003A Date: March 10, 2005 TECHNICAL Subject: Windshield Wipers Park in Up Position (Replace Windshield Wiper Motor Bracket) Models: 2005 Chevrolet Impala, Monte Carlo Supercede: This bulletin is being revised to make a correction to the Parts Information. Please discard Corporate Bulletin Number 05-08-43-003 (Section 08-Body and Accessories).
Condition Some customers may comment that the windshield wipers park in the out wipe (vertical) position. Cause This condition may be caused by a bent park tab on the windshield wiper motor bracket.
Correction To correct this condition, replace the wiper motor bracket. It will be necessary to transfer the following parts listed below to the new bracket. ^ Wiper transmission ^ Wiper motor crank arm ^ Wiper motor 1. Remove the windshield wiper motor drive system module. 2. Remove the windshield wiper transmission from the windshield wiper motor bracket. 3. Remove the wiper motor crank arm from the windshield wiper motor. 4. Remove the windshield wiper motor from the bracket. 5. Install the windshield wiper motor to the new bracket. 6. Install the wiper motor crank arm to the windshield wiper motor. 7. Install the windshield wiper transmission to the windshield wiper motor bracket. 8. Install the windshield wiper motor drive system module.
A TSB is not a recall, if vehicle is still under warranty the dealer should be repaired for free. If not, you'll have to pay for the repairs.
You have two problems. The first is the wipers turn off and stay in the upright position and do not close. The motor is fine. There is a steal 'close' tab that has been bent out of position. You just need to push the steal tab back into position. You can use a chisel or screwdriver to pound it back into the 90 degree position.
The windsheild washer motor probably needs to be replaced
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