GMC SIERRA 1994 Manual page 10

These symbols have to do with your lights:
Master Lighting
Switch
Parking Lights
Turn Signal
Direction
Fog Lights
A
Hazard Warning
Flasher
Daytime
Running Lights
These symbols are on some of your controls:
Windshield
Wiper
Windshield
Washer
Ventilating Fan Air Vents
Headlight
High Beam
0
O f f
Windshield
Defroster
Rear Window
Defogger
Vlll
...