Find Cadillac Escalade fuse box diagrams for 2002–2006 models with relay locations, fuse assignments, panel layouts, and electrical system information. This article covers the second-generation Cadillac Escalade (Model Code: GMT 800) , available from 2002 , and includes fuse box diagrams for Cadillac Escalade / Escalade ESV / Escalade EXT 2002, 2003, 2004, 2005 and 2006 , along with details about the location of the fuse panels inside the vehicle and a clear explanation of the assignment of each fuse and relay (fuse layout).
The underhood fuse block is located in the engine compartment near the battery on the driver’s side of the vehicle.
Assignment of the fuses and relays in the engine compartment fuse box (2002)
Fuse Data
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Short-Code Description STUD #1 Accessory Power / Trailer Wiring Feed / Load Leveling ABS Anti-Lock Brakes IGN A Ignition Switch AIR A.I.R. System RAP #1 Retained Accessory Power, Power Mirrors, Power Door Locks, Power Seats IGN B Ignition Switch RAP #2 Retained Accessory Power / Rear Power Windows, Sunroof, Radio STUD #2 Accessory Power / Trailer Wiring Brake Feed TRL R TRN Right Turn Signal Trailer Wiring TRL L TRN Left Turn Signal Trailer Wiring IGN 1 Ignition, Fuel Controls INJ-B Ignition, Fuel Controls (Relay ) STARTER Starter (Relay ) PARK LP Parking Lamp FRT HVAC Climate Control System STOP LP Exterior Lamps, Stoplamps ECM 1 VCM / PCM CHMSL Center High Mounted Stoplamp VEH STOP Stoplamps, Cruise Control TRL B/U Backup Lamps Trailer Wiring INJ-A Fuel Controls, Ignition RR HVAC Rear HVAC VEH B/U Vehicle Backup Lamps ENG 1 Engine Controls, Canister Purge, Fuel System ETC Electronic Throttle Control IGN E A/C Compressor Relay, Rear Window Defogger, Daytime Running Lamps, A.I.R. System B/U LP Backup Lamps, Automatic Transmission Shift Lock Control System ATC Automatic Transfer Case RR DEFOG Rear Window Defogger, Heated Mirrors (Relay ) RTD Autoride (Real Time Damping) RR PRK Right Rear Parking Lamps ECM B VCM / PCM F/PMP Fuel Pump (Relay ) O2 A Oxygen Sensors O2 B Oxygen Sensors LR PRK Left Rear Parking Lamps RR DEFOG Rear Window Defogger, Heated Mirrors HDLP Headlamps (Relay ) TRL PRK Parking Lamps Trailer Wiring PRIME Not Used RT HDLP Right Headlamps DRL Daytime Running Lamps (Relay ) HTD MIR Heated Mirrors LT HDLP Left Headlamps A/C Air Conditioning AUX PWR Cigarette Lighter, Auxiliary Power Outlets SEO 2 Special Equipment Option Power, Power Seats SEO 1 Special Equipment Option Power DRL Daytime Running Lamps A/C A/C (Relay ) FOG LP Fog Lamps FOG LP Fog Lamps (Relay ) RADIO Audio System, Instrument Cluster, Climate Control System CIGAR Cigarette Lighter, Auxiliary Power Outlets RT TURN Right Turn Signals BTSI Automatic Transmission Shift Lock Control System LT TURN Left Turn Signals FR PRK Front Parking Lamps, Sidemarker Lamps W/W PMP Windshield Washer Pump HORN Horn (Relay ) IGN C Ignition Switch, Fuel Pump, PRND321 Display, Crank RDO AMP Radio Amplifier HAZ LP Exterior Lamps, Hazard Lamps EXP LPS Not Used HORN Horn CTSY LP Interior Lamps RR WPR Rear Wipers TBC Body Control Module, Remote Keyless Entry, Headlamps
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Assignment of the fuses and relays in the engine compartment (2003-2006)
Fuse Data
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Short-Code Description GLOW PLUG Not Used CUST FEED Accessory Power HYBRID 2005: Hybrid2006: Not UsedSTUD #1 2003-2005: Auxiliary Power2006: Accessory Power / Trailer WiringMBEC (MBEC 1) Mid Bussed Electrical Center Power Feed, Front Seats, Right Doors BLOWER Front Climate Control Fan LBEC (LBEC 2) Left Bussed Electrical Center, Door Modules, Door Locks, Auxiliary Power Outlet—Rear Cargo Area and Instrument Panel STUD 2 Accessory Power / Trailer Wiring Brake Feed ABS Anti-Lock Brakes VSES/ECAS 2003-2005: Vehicle Stability2006: Automatic Level Control (ALC) CompressorIGN A Ignition Power IGN B Ignition Power LBEC 1 Left Bussed Electrical Center, Left Doors, Truck Body Controller, Flasher Module TRL PARK Parking Lamps Trailer Wiring RR PARK Right Rear Parking and Sidemarker Lamps LR PARK Left Rear Parking and Sidemarker Lamps PARK LP Parking Lamps (Relay) STARTER (STRTR) Starter (Relay) INTPARK 2003-2005: Interior Lamps2006: Roof Marker LampsSTOP LP Stoplamps TBC BATT Truck Body Controller Battery Feed SUNROOF (S/ROOF) Sunroof SEO B2 Off-Road Lamps 4WS 2003-2005: Vent Solenoid Canister / Quadrasteer Module Power2006: Not usedRR HVAC Rear Climate Control AUX PWR Auxiliary Power Outlet — Console IGN 1 Ignition (Relay) IGN 1 PCM Ignition PCM 1 Powertrain Control Module ETC/ECM Electronic Throttle Control, Electronic Brake Controller INJ 1 Ignition Coil, Fuel Injectors – Bank 1 INJ 2 Ignition Coil, Fuel Injectors – Bank 2 IGN E 2003-2004: Instrument Panel Cluster, Air Conditioning Relay, Turn Signal / Hazard Switch, Starter Relay2005-2006: Instrument Panel Cluster, Air Conditioning Relay, Turn Signal / Hazard Switch, Starter Relay, Electronic Brake Controller TC2 Mode SwitchRTD 2003-2004: Ride Control2005: Electronic Brake Controller Battery Feed2006: Electronic Suspension Control, Automatic Level Control (ALC) ExhaustTRL B/U Backup Lamps Trailer Wiring PCM B Powertrain Control Module, Fuel Pump F/PMP Fuel Pump (Relay) O2A / O2B Oxygen Sensors B/U LP Back-up Lamps, Automatic Transmission Shift Lock Control System RR DEFOG Rear Window Defogger HDLP-HI Headlamp High Beam (Relay) PRIME Not Used SIR (AIRBAG) Supplemental Inflatable Restraint System FRT PARK Front Parking Lamps, Sidemarker Lamps DRL Daytime Running Lamps (Relay) SEO IGN Rear Defog (Relay) TBC IGN1 Truck Body Controller Ignition HI HDLP-LT High Beam Headlamp-Left LH HID 2003-2004: Left Hand High Intensity Discharge Lamps2005-2006: Not UsedDRL Daytime Running Lamps RVC Regulated Voltage Control IPC/DIC Instrument Panel Cluster / Driver Information Center HVAC/ECAS Climate Control Controller / Electronically Controlled Air Suspension CIG LTR Cigarette Lighter HI HDLP-RT High Beam Headlamp-Right HDLP-LOW Headlamp Low Beam (Relay) A/C COMP Air Conditioning Compressor A/C COMP Air Conditioning Compressor (Relay) RR WPR Rear Wiper / Washer RADIO Audio System SEO B1 Mid Bussed Electrical Center, HomeLink, Rear Heated Seats LO HDLP-LT Headlamp Low Beam-Left BTSI Brake Transmission Shift Interlock System CRANK Starting System LO HDLP-RT Headlamp Low Beam-Right FOG LP 2003-2004: Fog Lamp (Relay) 2005-2006: Not UsedFOG LP 2003-2004: Fog Lamps2005-2006: Not UsedHORN Horn (Relay) W/S WASH Windshield and Rear Window Washer Pump (Relay) W/S WASH Windshield and Rear Window Washer Pump INFO 2003-2004: OnStar / Rear Seat Entertainment2005-2006: OnStarRADIO AMP Radio Amplifier RH HID 2003-2004: Right Hand High Intensity Discharge Lamp2005-2006: Not usedHORN Horn EAP 2003-2004: Electric Adjustable Pedals2005-2006: Not UsedTREC All-Wheel Drive Module SBA 2003-2004: Supplemental Brake Assist2005-2006: Not Used
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*if equipped
The auxiliary electric cooling fan fuse block is located in the engine compartment on the driver’s side of the vehicle, beside the underhood fuse block.
Assignment of the fuses in the engine compartment auxiliary fuse box (if equipped)
Fuse Data
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Short-Code Description COOL/FAN Cooling Fan COOL/FAN Cooling Fan Relay Fuse COOL/FAN Cooling Fan Fuse
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Assignment of the relays in the engine compartment auxiliary fuse box (if equipped)
Fuse Data
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Short-Code Description COOL/FAN 1 Cooling Fan Relay 1 COOL/FAN 3 Cooling Fan Relay 3 COOL/FAN 2 Cooling Fan Relay 2
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The fuse block access door is located on the driver’s side edge of the instrument panel. Remove the cover to reach the fuse block.
Assignment of the fuses and relays in the left side instrument panel (2002)
Fuse Data
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Short-Code Description L BODY Retained Accessory Power Relay LOCK Power Door Locks DRV UNLOCK Power Door Lock (Relay) LOCK Power Door Lock (Relay) HVAC 1 Climate Control System CRUISE Cruise Control, Instrument Cluster IGN 3 Ignition, Power Seats 4WD Not Used CRANK Starting System INT PRK Interior Lamps L DOOR Power Door Lock (Relay) BRAKE Anti-Lock Brake System RR WIPER Rear Window Wiper ILLUM Interior Lamps SEAT Power Seat Circuit Breaker TURN Exterior Lamps, Turn Signals, Hazard Lamps UNLOCK Power Door Locks HTR A/C Climate Control System WS WPR Windshield Wipers IGN 1 Ignition, Instrument Panel AIR BAG Air Bag MIR/LOCK Power Mirrors, Power Door Locks DR LOCK Power Door Locks PWR WDO Power Window Circuit Breaker UNLOCK Power Door Lock (Relay) IGN 0 PRND321 Display, Odometer, VCM/PCM SEO IGN Special Equipment Option, Ignition SEO ACCY Special Equipment Option Accessory, Cellular Telephone RAP #1 Retained Accessory Power (Relay) RDO 1 Audio System RAP #2 Rear Power Windows, Sunroof, Radio
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Assignment of the fuses , relays and circuit breakers in the left side instrument panel (2003-2006)
Fuse Data
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Short-Code Description RR Wiper Rear Window Wiper Switch SEO ACCY Special Equipment Option Accessory WS WPR Windshield Wipers TBC ACCY Truck Body Controller Accessory IGN 3 Ignition, Heated Seats 4WD Four-Wheel Drive System HTR A/C Climate Control System LOCK Power Door Lock Relay (Lock Function) HVAC 1 Inside Rearview Mirror, Climate Control System L DOOR (LT DR) Driver’s Door Harness Connection CRUISE Cruise Control UNLOCK Power Door Lock Relay (Unlock Function) RR FOG LP 2003-2005: Rear Fog Lamp (Export Only)2006: Not UsedBRAKE 2003-2005: Anti-Lock Brake System2006: Brake SwitchDRIVER UNLOCK Power Door Lock Relay (Driver’s Door Unlock Function) IGN 0 2003-2005: PCM, TCM2006: Brake Transmission Shift Interlock, Powertrain Control Module, TransmissionTBC IGN 0 Truck Body Controller VEH CHMSL Vehicle and Trailer High Mounted Stoplamp LT TRLR ST/TRN Left Turn Signal / Stop Trailer LT TRN Left Turn Signals and Sidemarkers VEH STOP Vehicle Stoplamps, Brake Module, Electronic Throttle Control Module RT TRLR ST/TRN Right Turn Signal / Stop Trailer RT TRN Right Turn Signals and Sidemarkers BODY Harness Connector DDM Driver Door Module AUX PWR 2 2003-2005: Rear Cargo Area Power Outlets2006: Instrument Panel Outlets, Rear Cargo Area Power OutletsLOCKS (LCKS) 2003-2005: Power Door Lock System2006: Rear Doors and Liftgate Power Lock Relay FeedECC (ECC TPM) 2003-2005: Rear Electronic Climate Control, Liftgate2006: Liftgate, Tire Pressure Monitoring SystemTBC 2C Truck Body Controller FLASH (HAZRD) Flasher Module CB LT DOORS 2003-2005: Left Power Window Circuit Breaker 2006: Left Rear Power Window Circuit Breaker and Driver Door ModuleTBC 2B Truck Body Controller TBC 2A Truck Body Controller
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The center instrument panel utility block is positioned beneath the instrument panel, on the left side of the steering column.
Assignment of the fuses in the center instrument panel fuse box (2002)
Fuse Data
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Short-Code Description SEO Special Equipment Option HTD ST Heated Seats SPARE 4 Not Used VANITY Headliner Wiring TRAILER Trailer Brake Wiring PWR ST Power Seats YE9 Not Used UPF Upfitter PARK LAMP Parking Lamps * (FRT PRK EXPT) Not Used SPARE 2 Not Used PUDDLE LP Puddle Lamps SL RIDE Not Used SPARE 3 Not Used INADV PWR Interior Lamps Feed CTSY LP Courtesy Lamps CEL PHONE Cellular Telephone Wiring
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Assignment of the fuses in the center instrument panel fuse box (2003-2006)
Fuse Data
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Short-Code Description SEO 2003-2005: Special Equipment Option2006: Special Equipment Option/Off-road Lamps Harness ConnectorTRAILER Trailer Brake Wiring UPFIT Upfitter (Not Used) SL RIDE Ride Control Harness Connection HDLR 2 Headliner Wiring Connector 2 BODY Body Wiring Connector DEFOG Rear Defogger Relay HDLNR 1 Headliner Wiring Connector 1 SPARE RELAY Not Used CB SEAT Driver and Passenger Seat Module Circuit Breaker CB RT DOOR 2003-2005: Right Power Window Circuit Breaker2006: Rear Right Power Window, Passenger Door ModuleSPARE Not Used INFO 2003-2005: Infotainment Harness Connection2006: Not Used
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