Sierra 1500 2WD V8-5.3L VIN Z Flex Fuel (2006)
Step 14 - Step 15
Mirrors - Automatic Day - Night Inoperative
MIRRORS - AUTOMATIC DAY-NIGHT INOPERATIVE
DIAGNOSTIC AIDS
The automatic day-night feature of the inside rearview mirror may not operate properly or become inoperative due to an intermittent short to battery
voltage in the backup lighting system.
TEST
