GMC 2001 Savana - Manual (Page 119)

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Center High-Mounted Stoplamp
Your vehicle’s center high - mounted stoplamp is located
above the rear doors at the center of the vehicle.
If items are loaded on the roof of the vehicle, as in a
luggage carrier, care should be taken not to block or
damage the center high
- mounted stoplamp unit.
Interior Lamps
Dome Lamps
The dome lamps will come on when you open a door.
You can also turn the dome lamps on by moving the
thumbwheel, located next to the headlamp knob, all the
way up to the second detent. In this position, the dome
lamps will remain on whether a door is open or closed.