K 1500 Suburban 4WD V8-4.8L VIN V (2003)
Map Light: Description and Operation
READING LAMP
The inadvertent power courtesy lamps supply voltage circuit of the BCM provides battery positive voltage to the reading lamps. The reading lamps and
switch are integral to the courtesy/reading lamp assembly. When the switch is closed, voltage is supplied and the lamp illuminates. Ground is provided to
the reading lamps at G203.
