GMC 2010 Sierra Denali Owner's Manual page 493

Fuses
1 Right Trailer Stop/Turn Lamp
Electronic Suspension Control,
2
Automatic Level Control Exhaust
3 Left Trailer Stop/Turn Lamp
4 Engine Controls
Engine Control Module, Throttle
5
Control
6 Trailer Brake Controller
7 Front Washer
8 Oxygen Sensor
9 Antilock Brakes System 2
10 Trailer Back-up Lamps
11 Driver Side Low-Beam Headlamp
12 Engine Control Module (Battery)
Fuel Injectors, Ignition Coils
13
(Right Side)
Transmission Control Module
14
(Battery)
Usage Fuses
15 Vehicle Back-up Lamps
16 Passenger Side Low-Beam Headlamp
17 Air Conditioning Compressor
18 Oxygen Sensors
19 Transmission Controls (Ignition)
20 Fuel Pump
21 Fuel System Control Module
22 Not Used
23 Not Used
Fuel Injectors, Ignition Coils
24
(Left Side)
25 Trailer Park Lamps
26 Driver Side Park Lamps
27 Passenger Side Park Lamps
28 Fog Lamps
29 Horn
Passenger Side High-Beam
30
Headlamp
Usage
6-119