Chevrolet 2003 Silverado 1500 Pickup Owner's Manual page 493

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Vent Solenoid
Canister/QUADRASTEERTM
Module Power
~ ~ ~~~~
RR HVAC Not Used
AUX PWR
Auxiliary Power Outlet -
Console
IGN 1 Ignition Relay
PCM 1 Powertrain Control Module
~ ~~~
ETC/ECM
Electronic Throttle Control,
Electronic Brake Controller
Instrument Panel Cluster, Air
SignaVHazard Switch, Starter
Relay
IGN E Conditioning Relay, Turn
RTD Ride Control
TRL B/U
I
Backup Lamps Trailer Wiring
I
PCM B
Powertrain Control Module,
Fuel Pump
F/PMP
I
Fuel Pump (Relay)
Fuses
B/U LP
RR DEFOG
HDLP-HI
PRIME
02B
SIR
FRT PARK
DRL
Usage
Back-up Lamps, Automatic
Transmission Shift Lock
Control System
Rear Window Defogger
Headlamp High Beam Relay
Not Used
Oxygen Sensors
Supplemental Inflatable
Restraint System
Front Parking Lamps,
Sidemarker Lamps
Daytime Running Lamps
5-1 18