One problem related to window regulator failed has been reported for the 1999 Oldsmobile Alero. The most recently reported issues are listed below.
Left front, left rear, and right rear window regulators failed with in the past 3 years. All three failed the same way: while rolling up the window it falls down and stays down. The parts that failed are the small plastic clips that attach the regulator to the window. The whole regulator assembly on each window needed replacement at $80. 00 + all over a piece of plastic that probably costs gm $ . 30 each.