2023 GMC Sierra LD 1500 Fuses and Fuse Box Guidance
The 2023 GMC Sierra LD 1500’s fuses and fuse box are an important part of the car’s electrical system, showing GMC’s dedication to safety and dependability. The carefully thought-out fuse box protects a complicated web of electrical connections all over the truck, making sure the integrity of the car’s electrical system. Each fuse is designed to act as a fail-safe, cutting the circuit off in the event of an electrical problem or overload. This keeps damage or fires from happening. Accurately labeled fuses make them easy to find, which makes diagnostics easier for both drivers and techs. The fuse box is an important part of the Sierra LD 1500’s electrical system. It shows that GMC cares about safety, durability, and the smooth operation of the truck’s high-tech and electrical parts. This makes the truck even more of a reliable choice for drivers in a wide range of situations.
Electrical System
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload.
When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed.
This greatly reduces the chance of circuit overload and fire caused by electrical problems.
Fuses and circuit breakers protect the wires that provide the power to the devices in your vehicle.
If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.
To check a fuse, look at the band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a fuse of identical size and rating.
Replacing a Blown Fuse
- Turn off the vehicle.
- Locate the fuse puller on the instrument panel end cap. See the Instrument Panel Fuse Block (Left) or
Instrument Panel Fuse Block (Right)
- Locate the fuse puller on the instrument panel end cap. See the Instrument Panel Fuse Block (Left) or
- Use the fuse puller to remove the fuse from the top or side, as shown above.
- If the fuse must be replaced immediately, spare fuses are also provided on the instrument panel end cap or borrow a replacement fuse with the same amperage from the fuse block. Choose a vehicle feature that is not needed to safely operate the vehicle. Repeat Steps 2-3.
- Insert the replacement fuse into the empty slot of the blown fuse.
At the next opportunity, see your dealer to replace the blown fuse.
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. 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.
See Accessories and Modifications and General Information.
To check or replace a blown fuse, see Electrical System Overload.
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 passenger side of the vehicle.
Press the clips on the sides and lift the cover to access the fuse block.
Caution
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
A fuse puller is available in the left instrument panel end cap.
The vehicle may not be equipped with all of the fuses, relays, and features shown
Fuses Usage
- 1 –
- 2 –
Fuses Usage
- Headlamp Left
- Headlamp Right
Fuses Usage
- Exterior Lighting
Module 7 - Exterior Lighting
Module 4
8 – - Exterior Lighting
Module 5 - Exterior Lighting
Module 6 - Body Control Module 2
- Rear Defog
- Washer Front
- –
- –
- –
- IECL 1
- DC/AC Inverter
- IECR 2
- –
- IECL 2
- Fuel Heater
Fuses Usage
- EBCM – Electronic Brake
Control Module - –
- Horn
- Park Lamp Mirror/Grill
- –
- Exterior Lighting
Module 3 - Exterior Lighting
Module 1 - –
- NOT R/C
- Radars
- MISC IP Headline Ignition
- Seat Fan Ignition
- –
- MISC Body Ignition
- Trailer Parking Lamp
- –
Fuses Usage - Trailer Integration
Module/DEFC/ICCM Ignition - Secondary Axle Motor
- Engine Control Module/
Transmission Control
Module/Integrated
Chassis Control Ignition - –
- –
- Transmission Auxiliary
Oil Pump - A/C Clutch
- Transfer Case Control
Module - Front Wiper
- Center High-Mounted
Stoplamp - –
- Trailer Back-up Lamp
- SADS – Semi Active
Damping System
Fuses Usage
- TTPM/SBZA – Side Blind
Zone Alert - Starter Motor
- PWR/TRN Sensors 2
- –
- DEFC Battery 1/Canister
Vent Solenoid - Trailer Brake Control
Module - –
- Cooling Fan Motor Left
- –
- DEFC Battery 2
- Starter Pinion
- Cooling Fan
- Cooling Fan Right/Lower
- Trailer Stop/Turn
Lamp Left - Trailer Interface
Module 2 - Integrated Chassis
Control Module
Fuses Usage
- Electric Running Board
- Engine Control Module
- Cabin Coll Pump
- Powertrain Sensor 1
- Trailer Stop/Turn Lamp Right
- Trailer Interface
Module 1 - FTZM – Fuel Tank Zone
Module - Trailer Battery
- –
- Engine Control Module
- Injector B Even
- O2 B Sensor
- O2 A sensor
- Injector A Odd
- –
- Aeroshutter
Relays Usage - Rear Defog
- DC/AC Inverter
- Fuel Heater
- Park Lamp/Front
Grille Lamp - Run/Crank
- Secondary Axle Motor
- A/C Clutch
- Starter Motor
- Starter Motor
- Powertrain
FAQ
The fuse box is a protective mechanism that prevents damage to electrical components by cutting power in the event of a surge or brief circuit.
Typically, there are two fuse receptacles in the Sierra LD 1500. One is located under the hood, and the other is typically located on the driver’s side of the compartment.
The Sierra LD 1500 employs blade fuses, which are available in a range of amperages to protect various electrical components.
Typically, a blown fuse is identifiable by a visible split in the metal filament inside. In addition, the metal connector may be discolored or opaque.
To restore functionality, replace the broken fuse with a new fuse of the same amperage. Always consult the owner’s manual for the correct amperage of fuses.
No, it is not recommended. Using a fuse with a higher amperage could overwhelm the circuit and cause damage to the electrical components it is meant to protect.
It is advisable to check the fuses whenever you observe an electrical problem. Regular maintenance inspections can also aid in preventing problems.
Yes, typically critical systems have dedicated fuses to ensure continuous operation. Refer to the manual for their precise location.
It is not advised. Circuit breakers could compromise the safety of the electrical system if used in place of fuses, which are designed to protect the circuit.
A majority of fuse replacements are straightforward and can be performed by the vehicle proprietor. However, if you are uncertain or uneasy, you should consult a professional mechanic.
Yes, a faulty fuse can disrupt the power supply to multiple vehicle components, resulting in a variety of electrical problems.
Before replacing a fuse, always power off the vehicle and disconnect the battery. Consult the owner’s manual if you are uncertain about the fuse’s amperage.
Typically, the vehicle is equipped with spare fuses and a fuse extractor to facilitate replacement.
Extreme weather conditions, particularly humidity, can contribute to corrosion of the fuse contacts and electrical problems. Regular inspections are essential in such circumstances.
Consult a qualified mechanic or the GMC service center to diagnose and repair the underlying electrical problem if replacing the fuse does not resolve the problem.
Useful Link
View Full PDF: GMC Sierra LD 1500 2023 User Guide| Auto User Guide
All Wheel Drive (AWD): 2023 GMC Sierra LD 1500 All Wheel Drive (AWD) Guide