GMC T-Series 1999 Owner's Manual page 257

Power is fed through these fuses to devices such as the
headlamp switch, ignition switch feed circuits and the
auxiliary brake pump (hydraulic brake vehicles).
-
Be sure to replace maxi fuses with maxi
same rating. Do not use maxi
than those indicated on the maxi
Name Circuits/Circuit Breakers
Protected
ST/TURN/HAZ Stoplamp, Turn Signals/Hazard
Warning Flashers, Fuel, Ignition
Relay (Gasoline Engines)
IGN SW3 Air Conditioner, Axle, Chassis
INT/EXT Parking Lamps, Dome Lamp,
LIGHTS Instrument Panel Lights
HEAD LAMP Headlamps, Daytime
Running Lamps
AUX WRG Auxiliary, Parking Brake
-
fuses of the
-
fuses of higher amperage
-
fuse block.
Name Circuits/Circuit Breakers
Protected
IGN SW1 Ignition Switch, Washer/Wiper,
Crank, Radio
HYD PUMP Hydraulic Brake, Brake
Pump Motor
ABS ABS Module
ELECT TRANS Ignition Relay (Diesel Engines)
PARK BRAKE Parking Brake Motor
BLOWER Blower, Horn, Cigarette
HORN Lighter, Auxiliary
TRAILER ABS Trailer ABS System,
Trailer Stoplamps
PWR Power Windows, Power
WDO/LOCKS Door Locks
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