Chevrolet Repair: Impala wipers do not park, crank arm, screw tap

Question
Hi Mark, I have a 2000 Impala. One day the wipers just wouldn't go into the park position when turned off. they would just stay in the middle of the windshield. I just changed the wiper motor control box. I got it from a scrapyard and the same problem exists.I wonder if i got a bad box or can you think of anything else that could be causing this.

Thanks

Pete

Answer
Hello Pete, This problem is the wiper crank arm. This is the part that connects the motor to the linkage and is gold in color.Here is how to replace it.............

Wiper Motor Crank Arm Replacement



Removal Procedure




Remove the air inlet grille panel. Disconnect the electrical connector from the wiper motor.
Disconnect the wiper transmission from the wiper motor crank arm.



Remove the wiper drive system screws.
Remove the wiper drive system module from the vehicle.



Remove the rubber boot from the wiper motor crank arm.
Loosen the wiper motor crank arm screw.
Tap on the wiper motor crank arm screw with a soft-faced mallet while holding up on the wiper motor crank arm until the wiper motor crank arm is loose on wiper motor.
Remove the wiper motor crank arm screw and the wiper motor crank arm from the wiper motor.
Installation Procedure
Connect the electrical connector to the wiper motor.
Turn ON the ignition.

Turn the wiper switch to DELAY.

Turn OFF the ignition when the wiper motor is paused in the innerwipe position.
Disconnect the electrical connector from the wiper motor.



Install the wiper motor crank arm on the wiper motor.
Measure the gap between wiper motor crank arm and the bracket tab. If the gap is not 4-8 mm (0.157-0.314 in), remove the wiper motor crank arm and repeat installation.


Install the wiper motor crank arm screw .

Tighten
Tighten the wiper motor crank arm screw to 16 N·m (142 lb in).

Install the rubber boot onto the wiper motor crank arm.



Position the wiper drive system module on the vehicle.
Install the wiper drive system screws.

Tighten
Tighten the wiper drive system module screws to 10 N·m (88 lb in).

Hope this helps you.

Have a Great New Years       Mark