How do you replace window regulator on 1990 Buick reatta?

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.