GMC 2010 Sierra Owner's Manual page 595

Fuses
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
31 Daytime Running Lamps (DRL)
32 Driver Side High-Beam Headlamp
33 Daytime Running Lights 2
34 Sunroof
Key Ignition System, Theft Deterrent
35
System
36 Windshield Wiper
37 SEO B2 Upfitter Usage (Battery)
38 Electric Adjustable Pedals
Usage Fuses
39 Climate Controls (Battery)
40 Airbag System (Ignition)
41 Amplifier
42 Audio System
Miscellaneous (Ignition), Cruise
43
Control
44 Not Used
45 Airbag System (Battery)
46 Instrument Panel Cluster
47 Power Take-Off
48 Auxiliary Climate Control (Ignition)
Center High-Mounted Stoplamp
49
(CHMSL)
50 Rear Defogger
51 Heated Mirrors
52 SEO B1 Upfitter Usage (Battery)
Cigarette Lighter, Auxiliary Power
53
Outlet
54 SEO Upfitter Usage
55 Climate Controls (Ignition)
Engine Control Module, Secondary
56
Fuel Pump (Ignition)
Usage
6-135