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What is a wiper park mechanism - 2000 Pontiac Grand Prix

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The park mechanism. is a situation when you put the wipers on the first setting and they wipe the screen once, and then they stop for a little time, and then they wipe again (without you having to turn them on and off, on and off).......this is called the "park". On some models of vehicles, you can sometimes increase or decrease this park time by turning the knob on the end of the wiper stalk.

In fact, the newer vehicles can sense how fast you are going and increase/decrease this Park feature as you are driving in rain !!!...pretty cool !!!

Posted on May 27, 2011


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1 Answer

The wipers will not return to the off position when they are turned off.

There is a parking mechanism inside of the motor to return the wipers to their 'parked' position. I don't believe you can get the parts for it seperately from the motor assembly. You can take off the motor and see if you can get the mechanism apart and fix it yourself if not, you will need a new motor unless you can live with timing the wipers when you shut them off.

Jun 28, 2011 | 2001 Pontiac Grand Prix

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I replaced the wiper motor crank arm and adjusted it as described in the instructions provided. The wipers parked for the first 5 times I tried them. Now the wipers don't park when the wiper motor is...

When Montana wipers don't park,lube the wiper plates on the top of the motor.Tap with a hammer while applying lube and they should park.Lube once a year to maintain parking action.

Apr 20, 2017 | 2000 Pontiac Montana

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Where is the windshield washer relay located

They (the wiper motor and mechanism) are underneath the cowl vent screen.

To replace the motor and mechanism:
1: Turn the ignition to the on position with the wipers at low speed. When the arms are point straight up, turn it off.

2: Use a small screwdriver and pry the plastic caps from the wiper arm mounting ends.

3: Disconnect negative battery terminal

4: Remove the small retaining nup from each wiper arm, then the arms.

5: Remove the cowl screen by turning the eight plastic retainers 1/4 turn counterclockwise. Next remove the six screen retaining clips. If it's a 2000 or later, remove four bolts that secure the arm monting bar so that you can access the wiper motor.

6: Disconnect the electical connections and remove the four screws that secure the motor and mechanism to the cowl, and take out the motor-mechanism assembly.

7: The drive mechanism isn't serviceable, but the motor can be replaced. Remove the operating arm nut from the motor shaft, and remove the three screws that hold the motor to the drive mechanism.

8: Reinstall the wiper mechanism into the cowl and connect the electrical connectors. (Before reinstalling the wiper arms and blades, turn the ignition to the on position and turn the wiper switch to either LO or HI, then turn the wiper switch Off. This lets the motor cycle to the park position thus avoiding damage to the arms and drive mechanism).

9: Install the wiper pivot arms, ensuring the blade tips align with the park reference mark at the base of the windshield.

10: Ensure that your wiper blade is fully seated on the wiper arm before operation the wipers.

11: Finish up the reverse way you began.

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I have a 2002 Montana and the wiper blades end up in a vertical position when they are turned off. They otherwise work fine. They pause properly in the horizontal position when running in intermittent...

If the wipers end up in the vertical position and they are the HIDE type usually its the park mechanism mounted on top of the wiper motor that the linkage attaches to, there is a small spring loaded lever on the bottom of this device that wears out and fails to activate the PARK position proccess when the wipers are turned off. When the wipers turn off the motor reverses and the lever is meant to catch on a tab and compress the mechanism pulling the wipers to the park position. Only thing I know what to do is replace this mechanism, ($150. new 25. used)

May 04, 2009 | 2002 Pontiac Montana

6 Answers

2001 Pontiac montanaThe front wipers park in the up position

This is a common problem with Chevy Venture, Olds Silhouette, and  Pontiac Montana. The mechanical wiper drive and parking cam assembly, if it's not broken, needs adjustment. The spring loaded stop arm should engage the vertical tab on the assembly mounting plate when the wiper motor reverses. See pic.  9a7b0af.jpg
I will upload the instructions to fix this problem, if there is interest.

Apr 03, 2009 | 2001 Pontiac Montana

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