GMCSierra 15002003 · Second generation · facelift
  1. GMC Sierra 1500
  2. Owner info
  3. Fuses
  4. 2003

2003 GMC Sierra 1500 Fuses

107
Searchable fuse mappings
3
Stored diagrams
FuseFunctionBox
FusesUsageInstrument Panel Fuse Block
RR WiperNot UsedInstrument Panel Fuse Block
SEO ACCYSpecial Equipment Option AccessoryInstrument Panel Fuse Block
WS WPRWindshield WipersInstrument Panel Fuse Block
TBC ACCYTruck Body Controller AccessoryInstrument Panel Fuse Block
IGN 3Ignition, Heated SeatsInstrument Panel Fuse Block
4WDFour-Wheel Drive System, Auxiliary BatteryInstrument Panel Fuse Block
HTR A/CClimate Control SystemInstrument Panel Fuse Block
LOCK (Relay)Power Door Lock Relay (Lock Function)Instrument Panel Fuse Block
HVAC 1Climate Control SystemInstrument Panel Fuse Block
L DOORDriver’s Door Harness ConnectionInstrument Panel Fuse Block
CRUISECruise Control, Power Take Off (PTO)Instrument Panel Fuse Block
UNLOCK (Relay)Power Door Lock Relay (Unlock Function)Instrument Panel Fuse Block
RR FOG LPNot UsedInstrument Panel Fuse Block
BRAKEAnti-Lock Brake SystemInstrument Panel Fuse Block
DRIVER UNLOCKPower Door Lock Relay (Driver’s Door Unlock Function)Instrument Panel Fuse Block
IGN 0TCMInstrument Panel Fuse Block
TBC IGN 0Truck Body ControllerInstrument Panel Fuse Block
VEH CHMSLVehicle and Trailer High Mounted StoplampInstrument Panel Fuse Block
LT TRLR ST/TRNLeft Turn Signal/Stop TrailerInstrument Panel Fuse Block
LT TRNLeft Turn Signals and SidemarkersInstrument Panel Fuse Block
VEH STOPVehicle Stoplamps, Brake Module, Electronic Throttle Control ModuleInstrument Panel Fuse Block
RT TRLR ST/TRNRight Turn Signal/Stop TrailerInstrument Panel Fuse Block
RT TRNRight Turn Signals and SidemarkersInstrument Panel Fuse Block
BODYHarness ConnectorInstrument Panel Fuse Block
DDMDriver Door ModuleInstrument Panel Fuse Block
AUX PWR 2Not UsedInstrument Panel Fuse Block
LOCKSPower Door Lock SystemInstrument Panel Fuse Block
ECCNot UsedInstrument Panel Fuse Block
TBC 2CTruck Body ControllerInstrument Panel Fuse Block
FLASHFlasher ModuleInstrument Panel Fuse Block
CB LT DOORSLeft Power Windows Circuit BreakerInstrument Panel Fuse Block
TBC 2BTruck Body ControllerInstrument Panel Fuse Block
TBC 2ATruck Body ControllerInstrument Panel Fuse Block
FusesUsageInstrument Panel Fuse Block
GLOW PLUGDiesel Glow Plugs and Intake Air HeaterInstrument Panel Fuse Block
CUST FEEDGasoline Accessory PowerInstrument Panel Fuse Block
STUD #1Auxiliary Power (Single Battery and Diesels Only)/ Dual Battery (TP2) Do not install fuse.Instrument Panel Fuse Block
MBECMid Bussed Electrical Center Power Feed, Front Seats, Right DoorsInstrument Panel Fuse Block
BLOWERFront Climate Control FanInstrument Panel Fuse Block

Fuse boxes / diagrams

GMC Sierra mk1 - fuse box - instrument panel
GMC Sierra mk1 – fuse box – instrument panel
GMC Sierra mk1 - fuse box - center instrument panel
GMC Sierra mk1 – fuse box – center instrument panel
GMC Sierra mk1 - fuse box - engine compartment
GMC Sierra mk1 – fuse box – engine compartment

GMC Sierra mk1 (2003 – 2004) – fuse box diagram

Stored fuse guideParsed from fuseboxipedia posts; not a live vehicle readout.

Fuse mappings are parsed from stored fuseboxipedia posts. Years come from the post’s year JSON and any explicit “Year of production” list. Ampere values are taken from the ampere column when the stored table has one; they are omitted when amperage cannot be parsed reliably. Mappings are not invented.