How to replace the windshield motor

Remove the wiper arms.
Remove the air inlet grille panel.
Remove the three bolts and two nuts retaining the windshield frame reinforcement.
Remove the windshield frame reinforcement.



Pull or push on the wiper transmission linkage to rotate the wiper motor crank arm (2) from the park position (1) to the area opposite the park position (3).



Remove the harness grommet from the hole in the plenum.
Disconnect the wiper motor harness connector.
Push the harness and grommet through the hole in the plenum.
Remove the three screws retaining the wiper system drive module.



Remove the wiper system drive module from the vehicle.



Remove the drive link from the wiper motor crank arm with the J39232.



Remove the screws retaining the wiper motor.
Remove the wiper motor from the wiper drive system module.

INSTALLATION PROCEDURE

TOOLS REQUIRED
J 39529 Wiper Transmission Installer

NOTE: Refer to Fastener Notice in Service Precautions.



Install the wiper motor onto the wiper drive system module with the screws.

Tighten
Tighten the screws to 8 N.m (71 lb in) .



Install the drive link onto the wiper motor crank arm with the J 39529.



Lower the wiper module into the upper plenum with the nose of the wiper motor pointing downward.
Rotate the wiper module so that the wiper motor nose points toward the rear of the vehicle.



Install the wiper drive system module with the three screws.

Tighten
Tighten the three screws to 8 N.m (71 lb in) .

Push the harness and grommet through the hole in the plenum.
Connect the wiper motor harness connector.
Install the harness grommet into the hole in the plenum.



Install the windshield frame reinforcement with the three bolts and two nuts.

Tighten
Tighten the three bolts and two screws to 9 N.m (80 lb in) .

Install the air inlet grille panel.
Install the wiper arms.

Check out the diagrams (Below). Please let us know if you need anything else to get the problem fixed.

Cheers

After reading and following above steps its is really easy to change or replace.

Thanks for these guidelines

Yes, I was wondering what are the right tools you need to for replacing the 2000 Buick Lesabre's motor windshield.