2026 GMC Yukon AT4 Onyx Black (VIN 1GKS2CKD7TR374663) (Stock 126173)

Napleton Buick GMC Crystal Lake is a family-owned Buick and GMC dealership at 6305 Northwest Highway in Crystal Lake, Illinois, serving drivers across McHenry County and the northwest Chicago suburbs - including Cary, Lake in the Hills, Algonquin, McHenry, and Woodstock. This 2026 GMC Yukon AT4 is in our current inventory and available for a test drive today. For over 80 years the Napleton family has built its reputation on a no-pressure buying experience that keeps you in control of the process, backed by a factory-certified sales and service team that knows the Buick and GMC lineup inside and out. Our goal is simple: an honest, comfortable experience and a dealership you'll return to for both buying and service. This 2026 GMC Yukon AT4 is finished in Onyx Black and makes a great addition to your family or business. Be sure to take note of all this vehicle has to offer:

AT4 Premium Plus Package ($8,845 value)

• Rear Seat Media System

Premium Capability Package with Active Response 4WD

• Air Ride Adaptive Suspension
• Electronic Limited Slip Differential (eLSD)

Max Trailering Package

• Integrated Trailer Brake Controller
• Hitch View
• Smart Trailer Integration Indicator
• Blind Zone Steering Assist with Trailering
• Extra Capacity Cooling System

AT4 Premium Package

• Power-Retractable Assist Steps
• Dual-Pane Panoramic Power Sunroof

Technology Package

• Power Release 2nd Row Bucket Seats
• Floor Console
• Inside Rearview Auo-Dimming Rear Camera Mirror
• 15 Diagonal Multi-Color Head-Up Display

Advanced Security Package

• Theft-Deterrent Alarm System
• Vehicle Inclination Sensor
• Vehicle Interior Movement Sensor
• Glass Breakage Sensor

Enhanced Trailering Technology Package

• Trailering Assist Guidelines
• Trailer Camera Provisions
• Wired Auxiliary Trailer Camera

Preferred Equipment Group 4SB

• 4-Way Power Driver Lumbar Seat Adjuster
• 4-Way Power Front Passenger Lumbar Seat Adjuster
• Bright Front and Rear Door Sill Plates
• Body-Color Door Handles
• Hill Descent Control
• Heavy-Duty Air Filter
• Perforated Heated and Ventilated Driver and Front Passenger Seats
• Dual Exhaust System
• Power Tilt and Telescopic Steering Column
• 2-Speed Electronic Autotrac Active Transfer Case
• 275/60R20SL AT BW Tires
• 20 X 9 Machined and Painted Wheels
• Front Skid Plate
• AutoSense Hands-Free Power Liftgate
• Red Horizontal-Mounted Recovery Hooks
• Black Roof-Mounted Luggage Rack Side Rails
• Front High-Approach Angle Fascia
• Magnetic Ride Control Suspension

Floor Liner Package ($495 value)

• All-Weather Cargo Mat
• 1st and 2nd Rows All-Weather Floor Liners
• 3rd Row All-Weather Floor Liners

Safety and Security

• Forward collision mitigation - Forward thinking. You look away for just a second and suddenly the vehicle in front of you has stopped. That's when the forward collision mitigation system comes to life. When it senses an impending impact, it will activate a combination of features to help prevent or reduce the severity of an accident. Forward collision mitigation is always looking ahead.
• Pedestrian impact prevention - An extra step toward safety. Pedestrians don't always stop, look, and listen, but with Pedestrian Impact Prevention, your vehicle is equipped to better see them and avoid them. This system constantly monitors the road ahead to identify and track pedestrians. It projects that image to an interior display screen, AND should an impact become likely, Pedestrian impact prevention takes steps to avoid a collision.
• Hands-off cruise control - Set it and forget it. Road trips used to be stressful. Cruise control only managed speed, but not distance or safety. Now with hands-off cruise control simply set your desired speed and let sensor technology maintain a safe distance between you and surrounding vehicles with minimal steering input from you. It slows you down; speeds you up and even keeps you in your own lane. Meet your ultimate co-pilot with hands-off cruise control.
• Super Cruise hands-on cruise control with lane change

Technology and Telematics

• Apple CarPlay/Android Auto smart device wireless mirroring

EMISSIONS, FEDERAL REQUIREMENTS, ENGINE, 5.3L ECOTEC3 V8, TRANSMISSION, 10-SPEED AUTOMATIC, GVWR, 7600 LBS. (3447 KG), REAR AXLE, 3.23 RATIO, WHEELS, 20 X 9 (50.8 CM X 22.9 CM) MACHINED AND PAINTED CARBON FLASH METALLIC, ONYX BLACK, SEATS, FRONT BUCKET, FOREST STORM WITH MAHOGANY ACCENTS, PERFORATED LEATHER SEATING SURFACES, AUDIO SYSTEM, 16.8 DIAGONAL PREMIUM GMC INFOTAINMENT SYSTEM, AT4 PREMIUM PLUS PACKAGE, AT4 PREMIUM PACKAGE, TECHNOLOGY PACKAGE, PREMIUM CAPABILITY PACKAGE WITH ACTIVE RESPONSE 4WD, LPO, FLOOR LINER PACKAGE, ENHANCED TRAILERING TECHNOLOGY PACKAGE, MAX TRAILERING PACKAGE, ADVANCED SECURITY PACKAGE, DIFFERENTIAL, ELECTRONIC LIMITED-SLIP (ELSD), TRAILER BRAKE CONTROLLER, INTEGRATED, COOLING SYSTEM, EXTRA CAPACITY, SUSPENSION, AIR RIDE ADAPTIVE, SUNROOF, POWER PANORAMIC, DUAL-PANE, TILT-SLIDING, ASSIST STEPS, POWER-RETRACTABLE WITH PERIMETER LIGHTING, LICENSE PLATE FRONT MOUNTING PACKAGE, REAR SEAT MEDIA SYSTEM, SEATS, SECOND ROW BUCKET, POWER RELEASE, CONSOLE, FLOOR, POWER-SLIDING CENTER, LPO, ALL-WEATHER FLOOR LINERS, 1ST AND 2ND ROWS, LPO, ALL-WEATHER FLOOR LINERS, 3RD ROW, HEAD-UP DISPLAY, 15 DIAGONAL MULTI-COLOR, SMART TRAILER INTEGRATION INDICATOR, SENSOR, VEHICLE INCLINATION, SENSOR, VEHICLE INTERIOR MOVEMENT, SENSOR, GLASS BREAKAGE, SUPER CRUISE, THEFT-DETERRENT ALARM SYSTEM, CONTENT THEFT ALARM, REAR CAMERA MIRROR, INSIDE REARVIEW AUTO-DIMMING, LPO, ALL-WEATHER CARGO MAT, 3 YEARS ONSTAR ONE, TRAILER CAMERA PROVISIONS, HITCH VIEW, BLIND ZONE STEERING ASSIST WITH TRAILERING, DRIVER ATTENTION ASSIST, TRAILERING ASSIST GUIDELINES Want more detail on this Yukon, its pricing, or current GM offers? Reach out to Napleton Crystal Lake Buick GMC and we'll walk you through financing and trade-in options. Napleton Crystal Lake Buick GMC is proud to serve customers in communities throughout the Chicagoland area. Give us a call at 815-219-4358 or stop by to test drive your new car, truck, or SUV today! 6305 Northwest Highway Crystal Lake IL 60014 Napleton Buick GMC Crystal Lake Online Pricing Disclaimer New vehicle inventory is offered for sale at the Manufacturer's Suggested Retail Price (MSRP), as set by General Motors and/or General Motors Financial. Prices labeled as the Napleton Price include all eligible dealer discounts and/or manufacturer incentives and do not include taxes, title, license fees, documentation fees, optional equipment, or dealer-installed accessories selected by the customer at the time of purchase. Destination charges may vary by model and are included in the displayed pricing. All pricing is subject to change without notice based on manufacturer program updates, incentive eligibility, or market conditions. Napleton Buick GMC Crystal Lake advertises its inventory on this website, [www.napletonbuickgmc.com](https://www.napletonbuickgmc.com), as well as on third-party advertising platforms. Pricing is specific to each vehicle, identified by its Vehicle Identification Number (VIN) and dealer stock number. The pricing shown on [www.napletonbuickgmc.com](https://www.napletonbuickgmc.com) represents the most current and accurate pricing for Napleton Buick GMC Crystal Lake. In the event of any discrepancy between this website and any third-party website, the pricing displayed on [www.napletonbuickgmc.com](https://www.napletonbuickgmc.com) will be considered the most accurate and will supersede all other advertised prices. While every effort is made to ensure the accuracy of the information on this site, errors may occur. Please verify all information with a Napleton Buick GMC Crystal Lake Client Advisor. You may do so by contacting us directly or visiting the dealership.