1998 Chevrolet Lumina Owner's Manual - Page 114

If you open a door, the lamps will stay on while it's open and then turn off automatically about seconds 18 after you closeit. If you don't open a door, the lamps will turn off after about seconds, unless you press 18 UNLOCK or the trunk symbol on the remote keyless entry transmitter.If you press UNLOCK or the trunk symbol and don't open a door, the lamps will off turn after about55 seconds. If you press LOCK on the remote keyless entry transmitter the lamps will off turn about 17 seconds after all the doors are closed. Sustained interior illumination includes a feature called theater dimming. With theater dimming, the lamps don't just turn off at the endof the delay time. Instead, they slowly dim during the delay time until theyout. The go delay timeis canceled if you turn the ignition key to RUN or START, so the lamps willgo out right away. When the ignition is on, sustained interior illumination is inactive, which means the courtesy lamps won't come on. Rearview Mirror Reading Lamps These lamps go on when you open the doors. When the doors are closed, turn the lamps on and uff with the switches. 2-38