GMC Safari 2003 Owner's Manual page 313

Relays Usage
A/C Relay
(Rear Heat and Rear/Heat and Air Conditioning
A/C)
Upfitter-ACCY
Upfitter Accessory
Relay
Starter Enable
Starter
Relay
A/C Enable
Air Conditioning
Relay
Headlamps
Headlamps
Relay
Fuel Pump
Fuel Pump
Relay
Fuse/Circuit Usage
Breaker
Upfitter Battery Power Stud, Trailer
UPFITTER-BATT
Wiring Harness
UPFITTER-ACCY Upfitter Accessory Relay
Spare Not used
Spare Not used
Spare Not used
Fuse/Circuit Usage
Breaker
Fuel Pump Relay and Motor, VCM,
ECM-1B
Oil Pressure Switch/Sender
HORN Horn Relay and Horn
Air Conditioning Enable Relay and
A/C COMP
Compressor
RR HTR/AC Rear Heater and Air Conditioning
ATC Active Transfer Case-L Van
FRT HVAC Front Heater and Air Conditioning
Oxygen Sensors, Camshaft Position
Sensor, Mass Air Flow Sensor,
ENG-I
Evaporative Emission Canister Vent
Solenoid
IGN-E Air Conditioning Enable Relay Coil
Fuel Injectors 1–6, Crankshaft
ECM-I Position Sensot, VCM, Coil Driver
Module (EST), Ignition Coil
Blank Not Used
RH HDLMP Right Headlamp
LH Headlamp Left Headlamp
Blank Not Used
Blank Not Used
5-97