Chevrolet 2003 Silverado Owner's Manual page 496

Fuses
SEO B2
4WS
RR HVAC
AUX PWR
IGN 1
PCM 1
ETC/ECM
IGN E
RTD
TRL B/U
PCM B
F/PMP
B/U LP
5-116
Usage
Off-Road Lamps
Vent Solenoid
Canister/Quadrasteer Module
Power
Not Used
Auxiliary Power Outlet —
Console
Ignition Relay
Powertrain Control Module
Electronic Throttle Control,
Electronic Brake Controller
Instrument Panel Cluster, Air
Conditioning Relay, Turn
Signal/Hazard Switch, Starter
Relay
Ride Control
Backup Lamps Trailer Wiring
Powertrain Control Module,
Fuel Pump
Fuel Pump (Relay)
Back-up Lamps, Automatic
Transmission Shift Lock
Control System
Fuses
RR DEFOG
HDLP-HI
PRIME
02B
SIR
FRT PARK
DRL
SEO IGN
TBC IGN1
HI HDLP-LT
LH HID
DRL
IPC/DIC
HVAC/ECAS
CIG LTR
HI HDLP-RT
HDLP-LOW
Usage
Rear Window Defogger
Headlamp High Beam Relay
Not Used
Oxygen Sensors
Supplemental Inflatable
Restraint System
Front Parking Lamps,
Sidemarker Lamps
Daytime Running Lamps
(Relay)
Rear Defog Relay
Truck Body Controller Ignition
High Beam Headlamp-Left
Not Used
Daytime Running Lamps
Instrument Panel
Cluster/Driver Information
Center
Climate Control Controller
Cigarette Lighter
High Beam Headlamp-Right
Headlamp Low Beam Relay