2026 GMC Sierra 1500 AT4 $13,699 off MSRP!Explore our extensive inventory of new and pre-owned Buick and GMC vehicles at LaFontaine Buick GMC of Highland. Each vehicle is meticulously inspected to meet our high standards, guaranteeing you drive away in a reliable and stylish car. When you shop with us, you get more than just a car; you get the LaFontaine Family Deal. This means transparent pricing, exceptional customer service, and a commitment to making you feel like part of our family. Our team operates with integrity, respect, and a dedication to exceeding your expectations. Visit LaFontaine Buick GMC of Highland today and discover the perfect vehicle for your needs.Located at 4000 W Highland Rd, Highland, MI, LaFontaine Buick GMC Highland is easily accessible and open six days a week to serve you better. Whether you're looking for a new vehicle, need service, or want to explore financing options, our friendly staff is here to assist you. Check out the features on this 2026 GMC Sierra 1500 AT4 Preferred Package (Power Sliding Rear Window with Rear Defogger and Universal Home Remote), AT4 Premium Package (Off-Road High Clearance Step), Technology Package (Bed View Camera, Multicolor 15"" Diagonal Head-Up Display, and Rear Camera Mirror), Trailering Package (Hitch Guidance), 10-Way Power Driver Seat Adjuster with Lumbar, 10-Way Power Passenger Seat Adjuster with Lumbar, 120-Volt Bed Mounted Power Outlet, 120-Volt Interior Power Outlet, 2 Charge/Data USB Ports Inside Center Console, 2 Type-C Charge-Only Rear USB Ports, 2 USB Ports, 220 Amp Alternator, 3.23 Rear Axle Ratio, 4-Wheel Disc Brakes, 7 Speakers, ABS brakes, Air Conditioning, All-Weather Floor Liners with AT4 Logo, Alloy wheels, AM/FM radio: SiriusXM with 360L, Apple CarPlay/Android Auto, Auto High-beam Headlights, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Auto-Locking Rear Differential, Automatic Emergency Braking, Automatic temperature control, Black Chrome Grille Insert Bars, Block heater, Brake assist, Buckle to Drive, Bumpers: body-color, Color-Keyed Carpeting Floor Covering, Compass, Deep-Tinted Glass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual Active Exhaust, Dual front impact airbags, Dual front side impact airbags, Electric Rear-Window Defogger, Electronic Stability Control, Emergency communication system: OnStar, Floor-Mounted Center Console, Following Distance Indicator, Forward Collision Alert, Front anti-roll bar, Front Bucket Seats, Front Center Armrest, Front dual zone A/C, Front fog lights, Front Pedestrian Braking, Front Premium Floor Liners with Removable Carpet Insert, Front Rain-Sensing Wipers, Front reading lights, Front wheel independent suspension, Fully automatic headlights, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated door mirrors, Heated Driver and Front Outboard Passenger Seating, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty Air Filter, Hill Descent Control, Hitch View, Illuminated entry, in-Vehicle Trailering System App, Integrated Trailer Brake Controller, IntelliBeam Automatic High Beam on/Off, Keyless Open and Start, Lane Keep Assist with Lane Departure Warning, LED Cargo Area Lighting, Low tire pressure warning, Memory seat, Navigation System, Occupant sensing airbag, Off-Road Suspension, OnStar Services Capable, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Perforated Front Leather Seat Trim, Perimeter Lighting, Power Door Locks, Power door mirrors, Power driver seat, Power Front Passenger Windows with Express Up/Down, Power Front Windows with Driver Express Up/Down, Power passenger seat, Power Rake and Telescoping Steering C Must qualify for GMS Pricing (General Motors Employee Pricing), Price includes: $1500 - Buick GMC Bonus Cash. Exp. 06/30/2026 $1750 - Buick & GMC Consumer Cash Program. Exp. 06/30/2026 $3500 - GM Trade In Allowance Program. Exp. 06/30/2026