GMC Yukon 2015 Owner's Manual page 339

10-38 Vehicle Care
Item Usage
72 Upfitter 1 Relay
74 Engine Control
Module Ignition
75 Miscellaneous
Ignition Spare
76 Transmission
Ignition
77 RC Upfitter 1 and 2
78 VBAT Upfitter
1 and 2
83 Euro Trailer RC
84 Run/Crank Relay
87 Engine
88 Injector A
89 Injector B
Item
90
91
92
93
94
95
100
101
102
Odd
Even
Usage
Oxygen Sensor B
Throttle Control
Engine Control
Module Relay
Horn
Fog Lamps
High-Beam
Headlamps
Oxygen Sensor A
Engine Control
Module
Engine Control
Module/
Transmission
Control Module
Item Usage
103 Auxiliary Interior
Heater
104 Starter
107 Aero Shutter
109 Police Upfitter
112 Starter Relay
114 Front Windshield
Washer
115 Rear Window
Washer
116 Cooling Fan Left
121 Right HID
Headlamp
122 Left HID Headlamp
123 Cooling Fan Right