GMC Yukon XL 2015 Owner's Manual page 339

10-36 Vehicle Care
Item Usage
1 Electric Running
Boards
2 Antilock Brake
System Pump
3 Interior BEC LT1
4 MBS Passenger
5 Suspension
Leveling
Compressor
6 4WD Transfer
Case Electronic
Control
10 Electric Parking
Brake
13 Interior BEC LT2
14 Rear BEC 1
17 MBS Driver
21 ALC Exhaust
Solenoid
23 Integrated Chassis
Control Module
Item Usage
24 Real Time
Dampening
25 Fuel Pump Power
Module
26 Spare/Battery
Regulated Voltage
Control
28 Upfitter 2
29 Upfitter 2 Relay
30 Wiper
31 TIM
34 Back-up Lamps
35 Antilock Brake
System Valve
36 Trailer Brakes
37 Upfitter 3 Relay
39 Trailer Stop/Turn
Right
40 Trailer Stop/
Turn Left
Item Usage
41 Trailer Park Lamps
42 Right Parking
Lamps
43 Left Parking Lamps
44 Upfitter 3
45 Automatic Level
Control Run/Crank
47 Upfitter 4
48 Upfitter 4 Relay
49 Reverse Lamps
51 Parking Lamp
Relay
59 Euro Trailer
60 Air Conditioning
Control
63 Upfitter 1
67 Trailer Battery
69 RC Upfitter 3 and 4
70 VBAT Upfitter
3 and 4