How do you change a blower motor on a 1999 Cadillac Seville sts?

To change the blower motor on a 1999 Cadillac Seville STS, first disconnect the battery to ensure safety. Remove the passenger side lower dash panel for access, then unplug the electrical connector from the blower motor. Unscrew the motor from its mounting and carefully pull it out, replacing it with the new blower motor. Reconnect everything in reverse order, ensuring all connections are secure before reattaching the dash panel and reconnecting the battery.