Fuses and relays Cadillac Escalade (GMT800; 2003-2006)

This material discusses in detail the fuse diagrams of the Cadillac Escalade (GMT800; second generation): 2003, 2004, 2005, 2006 model year.

Fuses marked as “AUX PWR 2, M/GATE” and “AUX PWR 2” in the passenger compartment and fuses marked as “AUX PWR” and “CIG LTR” in the engine bay are responsible for the cigarette lighter and 12V power outlets.

In the passenger compartment

There are two fuse boxes here. First block is located on the left side edge of the dashboard.  

Fuse box #1

To access pull off the plastic cover.

Access example.

General view.

Name Description
4WD Air Suspension Switch/Module
  • Rear Cargo Area 12V Power Outlets 
  • Instrument Panel 12V Power Outlets
  • Cigar Lighter Fuse
BODY Harness Connector
BRAKE Brake Switch
  • Power Window Circuit Breaker (Left Rear side)
  • Driver Door Module (Left Rear side)
CRUISE Cruise Control System
DDM Driver Door Module
DRIVER UNLCK Power Door Lock Relay (Driver's Door Unlock Function)
ECO TPM Tire Pressure Monitoring System / Liftgate
HAZRD Flasher Module, Turn Signals
HTR A/C Climate Control Unit
HVAC 1 Inside Rearview Mirror, Climate Control Module
IGN 0 Brake Transmission Shift Interlock, PCM, Transmission
IGN 3 Rear Heated Seats Module
LCK Power Door Lock Relay (Lock Function)
LCKS Liftgate Power Lock Relay Feed and Rear Doors
LT DR Harness Connection (Driver's Door)
LT TRLR ST/TRN Turn Signal/Stop Trailer (Left Side)
LT TRN Turn Signals and Sidemarkers (Left Side)
RR Wiper Rear Window Wiper Switch
RT TRLR ST/TRN Turn Signal/Stop Trailer (Right Side)
RT TRN Turn Signals and Sidemarkers (Right Side)
SEO ACCY Special Equipment Option Accessory
TBC 2A Truck Body Controller
TBC ACCY Truck Body Accessory Controller  
TBC IGN 0 Truck Body Controller
UNLCK Power Door Lock Relay (Unlock Function)
VEH CHMSL Vehicle and Trailer High Mounted Stoplamp
VEH STOP Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module
WS WPR Windshield Wipers

Fuse box #2 (Center)

Second block located to the left of the steering column, underneath the instrument panel.

Name Description
BODY Body Wiring Connector
CB RT DOOR Power Window (Rear Right side), Passenger Door Module
CB SEAT Passenger and Driver Seat Module Circuit Breaker
DEFOG Rear Defogger Relay
HDLNR 1 Headliner Wiring Connector
INFO Empty
SEO Special Equipment Option/Off-road Lamps Harness Connector
SL RIDE Ride Control
TRAILER Trailer Brake Wiring
UPFIT Upfitter

In the engine compartment

There are two fuse boxes here.

Primary Fuse Box

Primary box located on the left side near the battery, behind the plastic cover.

General view.

Name Description
4WS Empty
A/C COMP Air Conditioning Compressor Fuse and Relay
ABS Anti-lock Brakes System
AIRBAG Supplemental Inflatable Restraint System
AUX PWR Auxiliary 12V Power Outlet - Console, Cigar lighter
B/U LP  Automatic Transmission Shift Lock Control System and Back-up Lamps
BLWR Front Climate Control Fan
BTSI Brake Transmission Shift Interlock System
CIG LTR Cadillac Escalade Cigarette Lighter Fuse
CRNK Starting System
CUST FEED Gasoline Accessory Power
DRL Daytime Running Lamps (Relay)
EAP Empty
ETC/ECM Electronic Throttle Control, Electronic Brake Controller
F/PMP Escalade Fuel Pump Relay
FOG LP Empty
FRT PARK Sidemarker Lamps and Front Parking Lamps
HDLP-HI High Beam Headlamp Relay
HDLP-LOW Low Beam Headlamp Relay
HI HDLP-LT High Beam Headlamp (Driver's Side)
HI HDLP-RT High Beam Headlamp (Passenger's Side)
HORN Horn Fuse or Relay
HVAC/ECAS Climate Control Controller
IGN A Ignition Switch
IGN E Instrument Panel Cluster, Air Conditioning Relay, Turn Signal/Hazard Switch, Starter Relay, Electronic Brake Controller TC2 Mode Switch
INFO OnStar System
INT PARK Roof Marker Lamps
IPC/DIC Instrument Panel Cluster/Driver Information Center
LBEC 1 Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module (turn signals)
LBEC 2 Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary 12V Power Outlet - Rear Cargo Area and Instrument Panel
LH HID Empty
LO HDLP-LT Low Beam Headlamp (Driver's Side)
LO HDLP-RT Low Beam Headlamp  (Passenger's Side)
LR PARK Parking and Sidemarker Lamps (Left Rear Side)
MBEC 1 Mid Bussed Electrical Center Power Feed, Front Seats, Right Doors
PARK LP Parking Lamps Relay
PCM 1 Powertrain Control Module
RADIO Audio System, radio
RADIO AMP Radio Amplifier
RH HID Empty
RR DEFOG Rear Window Defogger
RR PARK Parking and Sidemarker Lamps (Right Rear Side)
RR WPR Rear Wiper/Washer
RTD Electronic Suspension Control, Automatic Level Control (ALC) Exhaust
RVC Regulated Voltage Control
SBA Empty
SEO B1 Mid-Bussed Electrical Center, Universal Home Remote System, Rear Heated Seats
SEO B2 Off-Road Lamps
SEO IGN Rear Defog Relay
STOP LP Stop lamps
STRTR Starter Relay
STUD #1 Accessory Power/Trailer Wiring
STUD #2* Accessory Power/Trailer Wiring Brake Feed
TBC BATT Truck Body Controller (Battery Feed)
TBC IGN1 Truck Body Controller (Ignition)
TCMB Transmission Control Module
TREC All-Wheel Drive System
TRL B/U  Trailer Wiring Backup Lamps
TRLPARK Trailer Wiring Parking Lamps
VSES/ECAS Automatic Level Control (ALC) Compressor
W/S WASH Windshield and Rear Window Washer Pump
  • *1 - Fuel Injection Rail #2 and Gasoline Engine
  • *2 - Fuel Injection Rail #1 and Gasoline Engine

Additional block

Located on the driver’s side next to the primary fuse box.

COOL/FAN 1 Relay 1
COOL/FAN 3 Relay 3
COOL/FAN 2 Relay 2
COOL/FAN Cooling Fan
Related fuse diagrams
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