GMC 2009 Sierra - Manual (Page 426)

Fuses Usage
34 Sunroof
35
Key Ignition System,
Theft Deterrent System
36 Windshield Wiper
37 SEO B2 Upfitter Usage (Battery)
38 Electric Adjustable Pedals
39 Climate Controls (Battery)
40 Airbag System (Ignition)
41 Amplifier
42 Audio System
43
Miscellaneous (Ignition),
Cruise Control
44 Not Used
45 Airbag System (Battery)
46 Instrument Panel Cluster
Fuses Usage
47 Power Take-Off
48
Auxiliary Climate Control (Ignition),
Compass-Temperature Mirror
49
Center High-Mounted Stoplamp
(CHMSL)
50 Rear Defogger
51 Heated Mirrors
52 SEO B1 Upfitter Usage (Battery)
53
Cigarette Lighter,
Auxiliary Power Outlet
54
Automatic Level Control Compressor
Relay, SEO Upfitter Usage
55 Climate Controls (Ignition)
56
Engine Control Module,
Secondary Fuel Pump (Ignition)
5-114