How do you change the light bulb behind the heater controls in a 07 Buick Rendezvous?

To change the light bulb behind the heater controls in a 2007 Buick Rendezvous, first, disconnect the negative battery cable to ensure safety. Remove the trim panel around the heater controls by gently prying it off. Once the panel is removed, you can access the bulb sockets; twist and pull out the old bulb and replace it with a new one. Finally, reassemble the trim panel and reconnect the battery.