Pontiac 2003 Montana Owner's Manual page 195

Front Reading Lamps
There are two reading lamps in the overhead console.
To turn either reading lamp on or off, press the lens
of the lamp. These lamps will come on each time you
open a door, unless you turn on the interior lamps
override feature. See "interior Lamps Override" earlier in
this section.
Rear Reading Lamps
There may be two reading lamps in the third row
headliner.
To turn on or off either reading lamp, press the lens of
the lamp.
There is also a reading lamp in the second row,
integrated with the dome lamp. To turn on or off either
reading lamp, press the button next to the lamp lens.
These lamps will not turn on if the interior lamps override
switch is on. See "Interior Lamps Override'' earlier in
this section.
Cargo Lamp
The cargo lamp is located in the rear of your vehicle,
above the liftgate opening, and does not have a switch.
The cargo lamp will come on each time you open a
door, unless you turn on the interior lamps override. See
"Interior Lamps Override" earlier in this section.
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