Just like replacing the windshield. Really not a job for a do it yourselfer unless you have the experience and the tools. Then I guess your not a D-I-Y'er.
from Ebay.com
To replace the window regulator on a 1990 Buick Reatta, start by removing the door panel to access the regulator. Disconnect the wiring harness and remove any screws or bolts securing the regulator to the door. Carefully take out the old regulator, then install the new one by reversing the removal process, ensuring all connections are secure. Finally, reattach the door panel and test the window operation.
Drop the fuel tank.
Look here: http://autorepair.about.com/library/firing_orders/bl-fo-9636.htm
Do you have to remove the window to take out the whole power window unit? Or better yet, how do you get it out???
To remove the old window motor in a 1990 Buick LeSabre, first disconnect the battery to ensure safety. Then, remove the door panel by unscrewing any fasteners and gently prying it off to access the window motor. Disconnect the motor's electrical connector and unbolt it from the regulator, then carefully pull it out. To install the new motor, reverse the process: position the new motor, secure it with bolts, reconnect the electrical connector, and reattach the door panel.
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To replace the driver side window in a 1990 Buick Skylark, start by removing the door panel; this typically involves unscrewing screws and gently prying off the panel. Once the panel is removed, detach the window regulator and any clips holding the window in place. Carefully lift the broken window out and insert the new window into the track, securing it with the clips. Reassemble the door panel and ensure everything is functioning properly before closing it up.
Loosen the tensioner bolt on your 1990 Buick LeSabre alternator. Slide the alternator to the left and remove the alternator belt. Remove the wiring harness from the alternator. Remove the alternator retaining bolts. Reverse the process to install the new alternator.
Marco Antonio Rivera Useche died in 1990.
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