2018 GMC Yukon XL Electrical Connectors

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Keep Your 2018 GMC Yukon XL in Top Shape with Quality Electrical Connectors

Whether you’re repairing or upgrading your Electrical Connector, using high-quality parts is key to keeping your 2018 GMC Yukon XL looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Trailer Wiring Harness Connectors, Cornering Light Socket Connectors, and Manual Trans Shift Position Switch Connector. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 2018 GMC Yukon XL Electrical Connector at Advance Auto Parts is around $47.66, with a range that starts at $16.99 and goes up to $138.99. With 15 options in stock from 5 trusted brands, finding the right fit is easy. Popular picks like Carquest Multi-Use Connector, PTA1003, GM Genuine Parts Gray Multi-Purpose Pigtail, PT3923, and ACDelco Multi-Purpose Wire Connector with Leads, PT2298 start at just $26.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Electrical Connector, don’t forget to check out other key components like Driving Safety Monitoring System Parts and Electrical Motors. At Advance Auto Parts, we’re here to help you keep your 2018 GMC Yukon XL in peak condition, inside and out.

Essential 2018 GMC Yukon XL Electrical Connectors

GM Genuine Parts – GM Genuine Parts Black Multi-Purpose Pigtail, PT2437 (Part No.PT2437)

GM Genuine Parts Black Multi-Purpose Pigtail, PT2437

from

$36.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
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CURT – CURT Replacement OE 4-Way Flat Socket (Plugs into USCAR), 55515 (Part No.55515)

CURT Replacement OE 4-Way Flat Socket (Plugs into USCAR), 55515

from

$35.49
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 4-way flat connector socket and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.
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Dorman – Dorman Trailer Tow Harness Connector – Professional appearance, 645-170 (Part No.645-170)

Dorman Trailer Tow Harness Connector - Professional appearance, 645-170

from

$32.99
Make better electrical repairs and accessory installations with this versatile and durable pigtail connector. It allows quick circuit disconnections for service, and is engineered for reliable performance.
See More

CURT – CURT Trailer Brake Controller Harness, 51451 (Part No.51451)

CURT Trailer Brake Controller Harness, 51451

from

$16.99
A CURT Quick Plug brake controller wiring adapter is one of the fastest and easiest ways to plug your brake controller into your vehicle. It requires no cutting or splicing! Just insert the vehicle-specific plug end into the OEM vehicle’s factory brake controller socket. The other end plugs into your CURT trailer brake controller. Quick Plug harnesses are available for a variety of vehicles and are unique for each vehicle application to provide the easiest possible installation. This particular brake controller harness fits certain years of the Cadillac Escalade, Escalade ESV, Chevy Silverado and GMC Sierra 1500, 1500 LD, 1500 Limited, 2500HD, 3500HD Suburban, Suburban 1500, Suburban 3500HD, Tahoe, Yukon and Yukon XL (see application info to verify fitment). CURT Quick Plug harnesses are compatible with most CURT brake controls and can be used as a replacement or for a new control unit installation. They’re also great for towing all types of trailers with electric brakes. For versatile mounting of your trailer brake controller this Quick Plug wire harness measures two feet long. It also features a slit loom sleeve to keep the wires protected against crushing and abrasions. CURT Quick Plug wire plug-in adapters are made with 12-gauge wires for a reliable connection and braking, and come with zip ties to keep the harness contained and out of sight.
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GM Genuine Parts – GM Genuine Parts Multi-Purpose Pigtail, PT2971 (Part No.PT2971)

GM Genuine Parts Multi-Purpose Pigtail, PT2971

from

$67.99
GM Genuine Parts Multi-Purpose Pigtail, PT2971.
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Dorman – Dorman Engine Oil Pressure Sensor, 926-397 (Part No.926-397)

Dorman Engine Oil Pressure Sensor, 926-397

from

$47.49
This engine oil pressure sensor is designed to match the function of an original sensor on specified vehicles. It is engineered to help accurately monitor oil pressure when an original sensor has failed from heat or internal component damage.
See More

Carquest Premium – Carquest Engine Oil Pressure Sensor, SBC1225 (Part No.SBC1225)

Carquest Engine Oil Pressure Sensor, SBC1225

from

$81.99
Carquest Premium oil pressure sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium oil pressure sensors and switches are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium oil pressure sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. They are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered, and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
See More

Carquest Premium – Carquest Engine Oil Pressure Sensor, SBC1007 (Part No.SBC1007)

Carquest Engine Oil Pressure Sensor, SBC1007

from

$55.99
Carquest Premium oil pressure sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium oil pressure sensors and switches are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium oil pressure sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. They are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered, and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
See More

GM Genuine Parts – GM Genuine Parts Gray Multi-Purpose Pigtail, PT3923 (Part No.PT3923)

GM Genuine Parts Gray Multi-Purpose Pigtail, PT3923

from

$46.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More

CURT – CURT Replacement OE 5-Way Flat Socket (Plugs into USCAR), 56515 (Part No.56515)

CURT Replacement OE 5-Way Flat Socket (Plugs into USCAR), 56515

from

$29.99
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 5-way flat connector socket and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.
See More

CURT – CURT Replacement OE 5-Way Flat Socket (T s into USCAR), 56584 (Part No.56584)

CURT Replacement OE 5-Way Flat Socket (T s into USCAR), 56584

from

$58.99
CURT Replacement OE 5-Way Flat Socket (T s into USCAR), 56584.
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Carquest Premium – Carquest Multi-Use Connector, PTA1003 (Part No.PTA1003)

Carquest Multi-Use Connector, PTA1003

from

$26.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More

Carquest Premium – Carquest Multi-Use Connector, PTC2094 (Part No.PTC2094)

Carquest Multi-Use Connector, PTC2094

from

$138.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More

ACDelco – ACDelco Multi-Purpose Wire Connector with Leads, PT2298 (Part No.PT2298)

ACDelco Multi-Purpose Wire Connector with Leads, PT2298

from

$39.99
ACDelco Professional Cornering Light Socket is a high quality aftermarket replacement component for one or more of the following vehicle systems: ignition, starting and charging, body-electrical and lighting, and/or engine fuel management. This premium aftermarket socket is manufactured to meet or exceed your expectations for fit, form, and function.
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Carquest Premium – Carquest Multi-Use Connector, PTA1011 (Part No.PTA1011)

Carquest Multi-Use Connector, PTA1011

from

$26.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More

Most Popular Trailer Wiring Harness Connectors for 2018 GMC Yukon XLs

Enhance your 2018 GMC Yukon XL with one of the 4 Trailer Wiring Harness Connectors we have in stock, starting at just $16.99.

CURT – CURT Replacement OE 4-Way Flat Socket (Plugs into USCAR), 55515 (Part No.55515)

CURT Replacement OE 4-Way Flat Socket (Plugs into USCAR), 55515

from

$35.49
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 4-way flat connector socket and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.
See More

CURT – CURT Trailer Brake Controller Harness, 51451 (Part No.51451)

CURT Trailer Brake Controller Harness, 51451

from

$16.99
A CURT Quick Plug brake controller wiring adapter is one of the fastest and easiest ways to plug your brake controller into your vehicle. It requires no cutting or splicing! Just insert the vehicle-specific plug end into the OEM vehicle’s factory brake controller socket. The other end plugs into your CURT trailer brake controller. Quick Plug harnesses are available for a variety of vehicles and are unique for each vehicle application to provide the easiest possible installation. This particular brake controller harness fits certain years of the Cadillac Escalade, Escalade ESV, Chevy Silverado and GMC Sierra 1500, 1500 LD, 1500 Limited, 2500HD, 3500HD Suburban, Suburban 1500, Suburban 3500HD, Tahoe, Yukon and Yukon XL (see application info to verify fitment). CURT Quick Plug harnesses are compatible with most CURT brake controls and can be used as a replacement or for a new control unit installation. They’re also great for towing all types of trailers with electric brakes. For versatile mounting of your trailer brake controller this Quick Plug wire harness measures two feet long. It also features a slit loom sleeve to keep the wires protected against crushing and abrasions. CURT Quick Plug wire plug-in adapters are made with 12-gauge wires for a reliable connection and braking, and come with zip ties to keep the harness contained and out of sight.
See More

CURT – CURT Replacement OE 7-Way RV Blade Socket (Twists into USCAR), 56415 (Part No.56415)

CURT Replacement OE 7-Way RV Blade Socket (Twists into USCAR), 56415

from

$25.99
Like trailer hitches and ball mounts, electrical connectors range all over the board in shape, size and capability, but no matter what your trailer’s electrical functions are, you need a solid connection to keep the power flowing and ensure safety on the road. CURT electrical connectors are designed and manufactured to give you a reliable connection every time you plug in your trailer. This 7-way OEM USCAR replacement connector is designed to plug into a twist-in OEM vehicle socket and supply power for tail lights, turn signals, electric trailer brakes, a 12-volt battery, reverse lights and brake lights, as well as a ground connection. It features rust-free black plastic construction and comes with a spring-loaded cover to keep out dust and water. This 7-way RV blade connector is a female-end socket, specifically designed for the vehicle side of the connection (see application info to verify fitment with your vehicle).
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Dorman – Dorman Trailer Tow Harness Connector – Professional appearance, 645-170 (Part No.645-170)

Dorman Trailer Tow Harness Connector - Professional appearance, 645-170

from

$32.99
Make better electrical repairs and accessory installations with this versatile and durable pigtail connector. It allows quick circuit disconnections for service, and is engineered for reliable performance.
See More

Best-Selling 2018 GMC Yukon XL Cornering Light Socket Connector

Upgrade your Yukon XL with our best-selling Cornering Light Socket Connector.

Carquest Premium – Carquest Multi-Use Connector, PTA1003 (Part No.PTA1003)

Carquest Multi-Use Connector, PTA1003

from

$26.99
Modern vehicles may have 100 or more electrical harness connectors in every operating system of the vehicle. Terminal tension may weaken with time or corrosion may occur within the connector housing making replacement necessary. When replacing any harness-connector assembly approved wire termination methods must be followed to ensure a successful and long-term solution to the original problem is made. A failed terminal connection, terminal corrosion or damaged wire will result in an electrical system fault.
See More

Top-Quality Manual Trans Shift Position Switch Connector for 2018 GMC Yukon XLs

Choose a high-quality OEM or aftermarket Manual Trans Shift Position Switch Connector for GMC Yukon XLs and enjoy top-notch performance from $46.99.

GM Genuine Parts – GM Genuine Parts Gray Multi-Purpose Pigtail, PT3923 (Part No.PT3923)

GM Genuine Parts Gray Multi-Purpose Pigtail, PT3923

from

$46.99
ACDelco GM Original Equipment Pigtail Connectors are connectors ready to be spliced into vehicle harnesses, and are GM-recommended replacements for your vehicle’s original components. These original equipment pigtail connectors have been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.
See More

Top Picks for 2018 GMC Yukon XL Oil Pressure Switch and Senders

Invest in one of our 2 durable Oil Pressure Switch and Senders for your 2018 GMC, knowing you’re getting trusted brands and expert craftsmanship.

Carquest Premium – Carquest Engine Oil Pressure Sensor, SBC1225 (Part No.SBC1225)

Carquest Engine Oil Pressure Sensor, SBC1225

from

$81.99
Carquest Premium oil pressure sensors and switches are designed to perform in harsh engine environments and meet or exceed original equipment (O.E.) specifications. Carquest Premium oil pressure sensors and switches are built by manufacturers that meet IATF 16949 certified framework, an internationally recognized proof of quality in the automotive industry. Carquest Premium oil pressure sensors and switches undergo extensive validation testing to ensure long-lasting performance and reliability. They are part of our Carquest Vehicle Solutions, which is a full line of engine management and electronics products that help control ignition, fuel delivery and emission systems. Carquest Vehicle Solutions are OE-quality parts designed, engineered, and tested by world-class manufacturers to ensure a reliable and long-lasting repair.
See More

Dorman – Dorman Engine Oil Pressure Sensor, 926-397 (Part No.926-397)

Dorman Engine Oil Pressure Sensor, 926-397

from

$47.49
This engine oil pressure sensor is designed to match the function of an original sensor on specified vehicles. It is engineered to help accurately monitor oil pressure when an original sensor has failed from heat or internal component damage.
See More

Trailer Wiring Connectors for 2018 GMC Yukon XLs

Make a smart move for your 2018 GMC Yukon XL with products all priced from $29.99 to $58.99.

CURT – CURT Replacement OE 5-Way Flat Socket (T s into USCAR), 56584 (Part No.56584)

CURT Replacement OE 5-Way Flat Socket (T s into USCAR), 56584

from

$58.99
CURT Replacement OE 5-Way Flat Socket (T s into USCAR), 56584.
See More

CURT – CURT Replacement OE 5-Way Flat Socket (Plugs into USCAR), 56515 (Part No.56515)

CURT Replacement OE 5-Way Flat Socket (Plugs into USCAR), 56515

from

$29.99
A CURT custom wiring connector (sometimes called a T-connector) is a simple, plug-and-play electrical device that eliminates the need for cutting, splicing and soldering when installing vehicle-to-trailer wiring. Most vehicles do not come ready to tow. Unless your vehicle has a towing package, it is probably not equipped with a trailer wiring connector. This is where CURT’s custom wiring connectors come into play. A custom wiring connector uses a single original equipment plug to plug into a special socket provided by your vehicle. Though this option is not available on every vehicle, some automotive manufacturers design their vehicles to be easily equipped for towing by supplying a socket, integrated into the vehicle’s electrical system, to readily accept a custom wiring connector. With a CURT custom wiring connector, there is no need to tap into the taillight assembly because a special socket is already provided. This custom wiring connector provides a 5-way flat connector socket and is designed to be a custom wiring option for a variety of vehicles (see application info to verify fitment with your vehicle). CURT custom wiring connectors are designed to be long-lasting and simple to install. They come with dust covers to keep your connector clean when not in use.
See More

FAQs for 2018 GMC Yukon XL Electrical Connectors

What are the best-selling Electrical Connectors for 2018 GMC Yukon XLs?

Out of 15 Electrical Connectors that fit 2018 GMC Yukon XLs, the following parts are the top sellers:

What’s the price range for 2018 GMC Yukon XL Electrical Connectors?

The prices of Electrical Connectors for the 2018 GMC Yukon XL range from $16.99 up to $138.99 for the most premium parts.

What is the average price of an Electrical Connector for a 2018 GMC Yukon XL?

The average price for Electrical Connectors for the 2018 GMC Yukon XL is $47.66. Keep in mind the variety of part types within our Electrical Connector category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Electrical Connectors for other GMC Yukon XL model years?

Yes, we carry Electrical Connectors for 10 model years of GMC Yukon XLs between 2015 and 2026. The following model years are the most popular for Electrical Connector purchases: 2020, 2019, 2017, 2016, 2015, 2026, 2023, 2025, and 2022.

What are the cheapest Electrical Connectors for my 2018 GMC Yukon XL?

The cheapest 2018 GMC Yukon XL Electrical Connectors we carry are:

Does Advance Auto Parts sell Electrical Connectors for any other 2018 GMC models?

What types of Electrical Connectors do you sell for my 2018 GMC Yukon XL?

As of 8/2/26, these are some of the most in-demand types of Electrical Connectors for a 2018 GMC Yukon XL:

Can I get help with 2018 GMC Yukon XL Electrical Connector orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about GMC Electrical Connectors and more.

What is your return policy for GMC Yukon XL Electrical Connectors?

Advance Auto Parts keeps returns simple. For new GMC Yukon XL Electrical Connectors and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.