How to fix fuses: Cadillac Escalade 2021 Fuse Diagram and Relay
The 2021 Cadillac Escalade’s fuse box is an important part that makes sure the car’s electrical systems work safely and easily. If you’re having electrical problems like a broken part or a system that won’t work, changing a fuse may be an easy fix. For quick repair, you need to know how the fuse box is set up and which fuses go where. The fuse box map shows where each fuse is located and how much current it can handle, which makes the process of replacing the fuses easier. Accessing and changing fuses in a Cadillac Escalade is easy if you know what you’re doing and use the provided fuse box diagram. This is true whether you need to fix the infotainment system or the lights.
2023 Cadillac Escalade Review, Specs, Price, And Mileage (Brochure)
Electrical System
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload. Fuses also protect power devices in the vehicle.
Replace a bad fuse with a new one of the identical size and rating. If there is a problem on the road and a fuse needs to be replaced, there are some spare fuses and a fuse puller in the left instrument panel fuse block. The same amperage fuse can also be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.
Headlamp Wiring
An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off?
Windshield Wipers
If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart.
Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers.
If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.
Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.
Danger
Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers. The use of an oversized fuse or circuit breaker can result in a vehicle fire. You and others could be seriously injured or killed.
Warning
Installation or use of fuses that do not meet GM’s original fuse specifications is dangerous. The fuses could fail, and result in a fire. You or others could be injured or killed, and the vehicle could be damaged.
To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating.
Fuses of the same amperage can be temporarily borrowed from another fuse location if a fuse goes out. Replace the fuse as soon as possible.
Engine Compartment Fuse Block
If the vehicle has a diesel engine, see the Duramax diesel supplement. The engine compartment fuse block is in the engine compartment, on the driver’s side of the vehicle.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
Lift the cover to access the fuse block.
Caution
Spilling liquid on any electrical component of the vehicle may damage it. Always keep the covers on any electrical component.
A fuse puller is available in the left instrument panel fuse block.
| Fuses | Usage |
| 1 | – |
| 2 | – |
| 3 | – |
| 4 | – |
| 6 | ELM 7 |
| 7 | ELM 4 |
| 8 | – |
| 9 | ELM 5 |
| 10 | ELM 6 |
| 11 | Long-range radar/ Front short-range radar |
| 12 | – |
| 13 | Washer front |
| 14 | Washer rear |
| 15 | Rec 2 |
| 16 | Power sounder |
| 17 | Spare |
| 19 | DC/AC inverter |
| 20 | IECR 2 |
| 21 | – |
| 22 | IECL 2 |
| 24 | EBCM |
| 25 | REC 1 |
| 26 | Camera wash |
| 27 | Horn |
| 28 | Right headlamp |
| 29 | Left headlamp |
| 30 | ELM 3 |
| 31 | ELM 1 |
| 32 | – |
| 33 | Not R/C |
| 34 | – |
| 37 | OBD body |
| 38 | MISC body |
| 39 | Upfitter |
| 40 | MISC IP |
| 41 | Trailer parking lamps |
| 42 | Right tail lamp |
| 44 | Trailer tow |
| 45 | Secondary axle motor |
| 46 | ECM ignition |
| 47 | OBD engine |
| 48 | – |
| 49 | TCM |
| 50 | A/C clutch |
| 51 | TCCM |
| 52 | Front wiper |
| 53 | – |
| 54 | Left tail lamp |
| 55 | Trailer backup lamp |
| 56 | SADS |
| 57 | Spare |
| 58 | Starter motor |
| 60 | AFM 1 |
| 61 | ALC main |
| 62 | ICCM/CVS/DEF |
| 63 | Trailer brake |
| 65 | AUX UEC |
| 66 | Cool fan motor LT |
| 67 | AFM 2 |
| 68 | ALC motor |
| 69 | Starter pinion |
| 71 | Cool fan motor lower |
| 72 | Cool fan motor right/lower |
| 73 | Left trailer stop turn lamp |
| 74 | TIM 2 |
| 75 | DEFC |
| 76 | ELEC RNG BDS |
| 78 | ECM |
| 79 | – |
| 80 | Cabin cool pump 17W |
| 81 | Right trailer stop turn lamp |
| 82 | TIM 1 |
| 83 | FTZM |
| 84 | Trailer battery |
| 85 | Engine |
| 86 | ECM |
| 87 | Injector B even |
| 88 | 02 B sensor |
| 89 | 02 A sensor |
| 90 | Injector A odd |
| 91 | ECM throttle control |
| 92 | Cool fan clutch AERO shutter |
| Relays | Usage |
| 5 | – |
| 18 | DC/AC inverter |
| 23 | – |
| 35 | Park lamp |
| 36 | Run/Crank |
| 43 | Secondary axle motor |
| 59 | A/C clutch |
| 64 | Starter motor |
| 70 | Starter pinion |
| 77 | Powertrain |
Instrument Panel Fuse Block
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. 
There are relays on the back of the fuse block. To access, press the tabs and remove the fuse block.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
2023 Cadillac Escalade Review, Specs, Price, And Mileage (Brochure)
| Fuses | Usage |
| F1 | Right door |
| F2 | Left door |
| F3 | UGDO/OHC/camera |
| F4 | BCM 2 |
| F5 | Displays |
| F6 | Front blower |
| F8 | Left door panel |
| F10 | Tilt/column lock |
| F11 | USB/DLC |
| F12 | CGM/onstar |
| F14 | Right door panel |
| F17 | Steering wheel control |
| F18 | AVM 1 |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | Heated wheel |
| F23 | – |
| F24 | – |
| F25 | SEO/UPFITTER |
| F26 | USB/SEO RAP |
| F27 | APO/RAP |
| F28 | Spare |
| F30 | SDM AOS |
| F31 | BCM 3 |
| F32 | CSM/USB |
| F33 | BCM 4 |
| F34 | Out of park |
| F40 | – |
| F41 | – |
| F42 | Electric park brake switch |
| F43 | RSE |
| F44 | AVM 2 |
| F45 | Radio module |
| F46 | BCM 1A |
| F47 | – |
| F48 | TCM |
| F49 | BCM 1 |
| F50 | DMS |
| F51 | – |
| F52 | – |
| F53 | – |
| F54 | Sunroof |
| F55 | APO 3 |
| F56 | DC/DC CNV BATT 1 |
| F57 | DC/DC CNV BATT 2 |
| F58 | Spare |
| F59 | – |
| K1 | – |
| K2 | RAP/ACCY 1 |
| K4 | RAP/ACCY 2 |
| K5 | – |
| CBO1 | APO1 |
| CBO2 | APO2 |
Rear Compartment Fuse Block
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.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
| Fuses | Usage |
| F01 | RFA |
| F02 | WCM |
| F03 | Heated seat module row 1 (Battery 1) |
| F04 | MSM driver |
| F05 | – |
| F06 | – |
| F07 | Amp aux 2 |
| F08 | – |
| F09 | SEO UPFTR 2 |
| F10 | Motor seatbelt passenger |
| F11 | Power folding seat row 2 |
| F12 | GBS |
| F13 | – |
| F14 | – |
| F15 | Heated seat module row 1 (Battery 2) |
| F16 | RH CINCH latch |
| F17 | Memory seat module passenger |
| F18 | Rear wiper |
| F19 | Motor seatbelt driver |
| F20 | Rear defogger |
| F21 | – |
| F22 | Rear HVAC display control |
| F23 | EOCM |
| F24 | Amp aux 3 |
| F25 | OBS DET |
| F26 | RDCM |
| F27 | Amp aux 1 |
| F28 | VPM |
| F29 | – |
| F30 | – |
| F31 | Amp |
| F32 | – |
| F33 | ICCM |
| F34 | Heated seat module row 2 |
| F35 | HFCR |
| F36 | ELM |
| F37 | – |
| F38 | Power slide console |
| F39 | – |
| F40 | – |
| F41 | – |
| F42 | – |
| F43 | UPA |
| F44 | – |
| F45 | AFL AHL |
| F46 | Rear HVAC blower motor |
| F47 | LH CINCH latch |
| F48 | Power seat recline module |
| F49 | Lift glass |
| F50 | Driver power seat |
| F51 | Power liftgate module |
| F52 | Passenger power seat |
| Relays | Usage |
| K53 | – |
| K54 | – |
| K55 | L/GLASS |
FAQs
The fuse box in a Cadillac Escalade 2021 is typically located in the interior of the vehicle, often on the driver’s side dashboard or under the hood near the battery.
To access the fuse box, you may need to open the driver’s side door and look for a removable panel on the side of the dashboard or open the hood and locate a fuse box near the battery.
Generally, you’ll only need a pair of needle-nose pliers or a fuse puller tool to remove and replace a fuse. It’s also a good idea to have a flashlight on hand for better visibility.
A blown fuse will have a visibly broken metal filament inside the fuse casing. You can also use a multimeter to test the continuity of the fuse.
The amp rating of the fuse you need will depend on the specific circuit you’re replacing the fuse for. Check your owner’s manual or the fuse box diagram for the correct amp rating.
Blown fuses can be caused by a variety of issues, including electrical shorts, overloading the circuit, or faulty electrical components.
No, you should never replace a fuse with one of a higher amp rating as this can lead to electrical damage or even fire hazards. Always replace fuses with ones of the same or lower amp rating.
If a component or system in your vehicle stops working, such as the radio or power windows, and all other potential causes have been ruled out, then checking the fuse for that circuit is a good next step.
No, replacing a fuse is a relatively simple task that can be done by most vehicle owners. Just make sure to follow proper safety procedures and use the correct replacement fuse.
The fuse box diagram is usually printed on the inside of the fuse box cover or in the owner’s manual. You can also sometimes find it online through the manufacturer’s website or automotive forums.
You can certainly replace fuses yourself, as it’s a simple task. However, if you’re uncomfortable doing so or if you suspect a more serious electrical issue, it’s always best to consult a qualified mechanic.
There’s no specific interval for checking fuses, but it’s a good idea to inspect them if you notice any electrical issues with your vehicle or during regular maintenance checks.
Yes, always make sure the ignition is turned off before replacing fuses to avoid electrical shock or damage. Additionally, handle fuses carefully to avoid breaking them or damaging the contacts.
If you’re unable to locate the source of the issue after checking the fuses, it’s best to consult a professional mechanic who can diagnose and repair the problem.
In some cases, a blown fuse can be a symptom of a larger underlying issue, but generally, replacing the fuse should resolve the problem unless there is a more serious electrical issue at play. Always investigate further if you experience recurring blown fuses.
Useful Link:
View full PDF: Cadillac Escalade 2021 User Manual | Auto User Guide
2023 Cadillac Escalade Review, Specs, Price, And Mileage (Brochure)