The Cadillac Escalade for the 2021-2022 model years represents a pinnacle of luxury SUVs, renowned for its bold design, advanced technology, and powerful performance. Its electrical system, including the fuse box and relay components, is essential for maintaining the vehicle’s operation and ensuring a seamless driving experience.
In the Cadillac Escalade 2021-2022, the fuse box houses fuses that protect various electrical circuits throughout the vehicle. These circuits power critical components such as the engine control module, lighting systems, infotainment features, climate control, and more. Fuses are designed to interrupt the circuit in case of an electrical overload or short circuit, preventing damage to the corresponding systems.
Relays in the Cadillac Escalade act as electrically operated switches that manage high-current circuits. They play a crucial role in activating functions such as the starter motor, fuel pump, air conditioning compressor, and power windows or seats. Efficient relay operation ensures reliable power distribution and optimal performance of the vehicle’s electrical systems.
Regular inspection and maintenance of the fuse box and relays are necessary to ensure the Cadillac Escalade operates smoothly. This includes checking fuses for signs of wear or damage, ensuring relay connections are secure, and promptly addressing any electrical issues that may arise. Proper care of these components helps maintain the vehicle’s electrical integrity, enhancing safety and comfort in the Cadillac Escalade 2021-2022.
MUST READ: DYI – How to Check Car Fuses?
(2021-2022) Cadillac Escalade fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Cadillac Escalade 2021-2022 fuse assignment
Year of production: 2021, 2022
Passenger Compartment
The right instrument panel fuse block access door is on the passenger side edge of the instrument panel. Pull off the cover to access the fuse block.
Engine Compartment
The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle.
Luggage Compartment
The rear compartment fuse block is behind the access panel on the left side of the compartment. Pull the panel out by grabbing the finger access slot at the rear edge.
Fuse Box Diagrams
Instrument Panel Fuse Box Diagram
There are relays on the back of the fuse block. To access, press the tabs and remove the fuse block.Assignment of the fuses in the Instrument Panel Fuse Box
| № | Usage |
|---|---|
| F1 | Right Door |
| F2 | Left Door |
| F3 | Universal Garage Door Opener (UGDO)/ OnStar Hands-free Calling (OHC)/ Camera |
| F4 | Body Control Module 2 |
| F5 | Displays |
| F6 | Front Blower |
| F8 | Left Door Panel |
| F10 | Tilt/Column Lock |
| F11 | Data Link Connector/ Column Lock/ Integrated Center Stack/ USB |
| F12 | Central Gateway Module (CGM)/ Onstar |
| F14 | Right Door Panel |
| FI 7 | Steering Wheel Control |
| F18 | 2021: AVM1 |
| F19 | — |
| F20 | — |
| F21 | — |
| F22 | Heated Wheel |
| F23 | — |
| F24 | — |
| F25 | Special Equipment Option (SEO)/UPFITTER |
| F26 | USB/ Special Equipment Option(SEO) Retained Accessory Power (RAP) |
| F27 | Auxiliary Power Outlet (APO)/ Retained Accessory Power |
| F28 | — |
| F30 | Sensing and Diagnostic Module/ Automatic Occupant Sensing/ Driver Monitor System/ Night Vision Module |
| F31 | Body Control Module 3 |
| F32 | Center Stack Module (CSM)/ USB |
| F33 | Body Control Module 4 |
| F34 | Out of Park |
| F40 | — |
| F41 | — |
| F42 | Electric Park Brake Switch |
| F43 | Rear Seat Infotainment/Multi-Functional Control |
| F44 | 2021: AVM1 |
| F45 | Radio Module |
| F46 | 2021: Body Control Module 1A |
| F47 | — |
| F48 | Telematics Control Module |
| F49 | Body Control Module 1 |
| F50 | 2021: DMS |
| F51 | — |
| F52 | — |
| F53 | — |
| F54 | Sunroof |
| F55 | Auxiliary Power Outlet 3 |
| F56 | Direct Current/Direct Current Converter Battery 1 |
| F57 | Direct Current/Direct Current Converter Battery 2 |
| F58 | Spare |
| F59 | — |
| Circuit Breakers | |
| CB01 | Auxiliary Power Outlet 1 |
| CB02 | Auxiliary Power Outlet 2 |
| Relays | |
| K1 | — |
| K2 | Retain Accessory Power/ Accessory 1 |
| K4 | Retain Accessory Power/ Accessory 2 |
| K5 | — |
Engine Compartment Fuse Box Diagram
Assignment of the fuses in the Engine Compartment Fuse Box
| № | Usage |
|---|---|
| 1 | — |
| 2 | — |
| 3 | — |
| 4 | — |
| 6 | Exterior Lighting Module 7 |
| 7 | Exterior Lighting Module 4 |
| 8 | — |
| 9 | Exterior Lighting Module 5 |
| 10 | Exterior Lighting Module 6 |
| 11 | Long Range Radar/ Front Short Range Radar |
| 12 | — |
| 13 | Washer Front |
| 14 | Washer Rear |
| 15 | Rear Electrical Center 2 |
| 16 | Power Sounder |
| 17 | 2022: Electronic Brake Control Module Battery 1 |
| 19 | DC/AC Inverter |
| 20 | Instrument Electrical Center Right 2 |
| 21 | — |
| 22 | Instrument Electrical Center Left 1 |
| 24 | 2021: EBCM 2022: Fuel Heater |
| 25 | Rear Electrical Center 1 |
| 26 | Camera Wash |
| 27 | Horn |
| 28 | Headlamp – Right |
| 29 | Headlamp – Left |
| 30 | Exterior Lighting Module 3 |
| 31 | Exterior Lighting Module 1 |
| 32 | — |
| 33 | Not R/C |
| 34 | — |
| 37 | MISC (Body Ignition 1) |
| 38 | MISC (Body Ignition 2) |
| 39 | Upfitter |
| 40 | MISC (Instrument Panel (IP)) |
| 41 | Trailer Parking Lamps |
| 42 | Right Taillamp |
| 44 | Trailer Tow |
| 45 | Secondary Axle Motor |
| 46 | Engine Control Module (ECM) Ignition |
| 47 | OBD Engine |
| 48 | — |
| 49 | Transmission Auxiliary Oil Pump |
| 50 | A/C Clutch |
| 51 | Transfer Case Control Module |
| 52 | Front Wiper |
| 53 | — |
| 54 | Left Taillamps |
| 55 | Trailer Back-up Lamp |
| 56 | Semi Active Damping System |
| 57 | Spare |
| 58 | Starter Motor |
| 60 | 2021: Active Fuel Management 1 2022: Powertrain Sensor 2 |
| 61 | Automatic Lamp Control (ALC) Main |
| 62 | Integrated Chassis Control Module/ Canister Vent Solenoid/ Diesel Exhaust Fluid |
| 63 | Trailer Brake |
| 65 | 2021: AUX UEC |
| 66 | Left Cool Fan Motor |
| 67 | Active Fuel Management 2 |
| 68 | Automatic Lamp Control (ALC) Motor |
| 69 | Starter Pinion |
| 71 | Cool Fan Motor Lower |
| 72 | Right Cool Fan Motor/Lower |
| 73 | Left Trailer Stop Turn Lamp |
| 74 | Trailer Interface Module 2 |
| 75 | Diesel Exhaust Fluid Controller |
| 76 | Electric Power Running Boards |
| 78 | Engine Control Module |
| 79 | 2022: Cabin Cool Pump 17W |
| 80 | 2022: Cabin cool pump 17W 2022: Powertrain Sensor 1 |
| 81 | Right Trailer Stop Turn Lamp |
| 82 | Trailer Interface Module 1 |
| 83 | Fuel Tank Zone Module |
| 84 | Trailer Battery |
| 85 | 2021: Engine 2022: Auxiliary Water Pump |
| 86 | Engine Control Module |
| 87 | Injector B Even |
| 88 | O2 B Sensor |
| 89 | O2 A Sensor |
| 90 | Injector A Odd |
| 91 | Engine Control Module (ECM) Throttle Control |
| 92 | Cool Fan Clutch AERO Shutter |
| Relays | |
| 5 | — |
| 18 | DC/AC Inverter |
| 23 | 2022: Fuel Heater |
| 35 | Trailer Park Lamp |
| 36 | Run/Crank |
| 43 | Secondary Axle Motor |
| 59 | A/C Clutch |
| 64 | Starter Motor |
| 70 | Starter Pinion |
| 77 | Powertrain |
Luggage Compartment Fuse Box Diagram
Assignment of the fuses in the Rear Compartment Fuse Box
| № | Usage |
|---|---|
| F01 | Remote Function Actuator |
| F02 | Wireless Charging Module |
| F03 | Heated Seat Module Row 1 (Battery 1) |
| F04 | Memory Seat Module (MSM) Driver |
| F05 | — |
| F06 | — |
| F07 | Amplifier Auxiliary 2 |
| F08 | — |
| F09 | Special Equipment Upfitter 2 |
| F10 | Motor Seatbelt Passenger |
| F1 | Power Folding Seat Row 2 |
| F12 | Glass Breakage Sensor |
| F13 | — |
| F14 | — |
| F15 | Heated Seat Module Row 1 (Battery 2) |
| F16 | Right Hand Cinch Latch |
| F17 | Memory Seat Module Passenger |
| F18 | Rear Wiper |
| F19 | Motor Seatbelt Driver |
| F20 | Rear Defogger |
| F21 | — |
| F22 | Rear HVAC Display Control |
| F23 | External Object Calculation Module |
| F24 | Amplifier Auxiliary 3 |
| F25 | Obstacle Detection |
| F26 | Rear Drive Control Module |
| F27 | Amplifier Auxiliary 1 |
| F28 | Video Processing Module |
| F29 | — |
| F30 | — |
| F31 | Amplifier |
| F32 | — |
| F33 | Integrated Chassis Control Module |
| F34 | Heated Seat Module Row 2 |
| F35 | Hands Free Closure Release |
| F36 | Exterior Lighting Module |
| F37 | — |
| F38 | Power Slide Console |
| F39 | — |
| F40 | — |
| F41 | — |
| F42 | — |
| F43 | Universal Park Assist |
| F44 | — |
| F45 | Adaptive Forward Lighting/ Automatic Headlamp Leveling |
| F46 | Rear HVAC Blower Motor |
| F47 | Left Hand Cinch Latch |
| F48 | Power Seat Recline Module |
| F49 | Lift Glass |
| F50 | Driver Power Seat |
| F51 | Power Liftgate Module |
| F52 | Passenger Power Seat |
| Relays | |
| K53 | — |
| K54 | — |
| K55 | Lift Glass |
Conclusion
For owners and enthusiasts of classic Cadillac Escalade 2021-2022, understanding the fuse box and relay systems is essential for vehicle maintenance. Regular inspection and maintenance of these components helped ensure the vehicle’s longevity and reliability, preserving its status as a symbol of Cadillac’s craftsmanship and innovation in the automotive industry during that era.