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Family Deal Price: $79,549

New 2026 GMC Sierra 3500 AT4 Crew Cab

Stock #26G1770
New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 1
New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 1 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 2 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 3 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 4 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 5 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 6 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 7 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 8 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 9 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 10 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 11 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 12 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 13 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 14 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 15 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 16 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 17 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 18 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 19 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 20 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 21 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 22 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 23 New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 24
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Vehicle Notes

2026 GMC Sierra 3500HD AT4 $11,555 off MSRP!Explore our extensive inventory of new and pre-owned Buick and GMC vehicles at LaFontaine Buick GMC of Hig…
Read More… 2026 GMC Sierra 3500HD AT4 $11,555 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 3500HD AT4 Preferred Package (LED Smoked Amber Roof Marker Lamps, Power Sliding Rear Window w/Defogger, and Universal Home Remote), AT4 Premium Plus Package (Off-Road High Clearance Step (LPO) and Power Sunroof), Gooseneck/5th Wheel Prep Package, Snow Plow Prep/Camper Package (220 Amp Alternator), Technology Package (Auto-Dimming Inside Rearview Mirror w/Camera and Multicolor 15" Diagonal Head-Up Display), X31 Off-Road Package (Hill Descent Control), 10-Way Power Driver Seat Adjuster w/Lumbar, 10-Way Power Passenger Seat Adjuster w/Lumbar, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 Charge-Only Rear USB Ports, 2 Charge/Data USB Ports Inside Center Console, 2 USB Ports, 2-Speed Active Transfer Case, 3 Years SiriusXM, 4-Wheel Disc Brakes, 7 Speakers, ABS brakes, Air Conditioning, All-Weather Floor Liners w/AT4 Logo (LPO), Alloy wheels, AM/FM radio: SiriusXM with 360L, Auto High-beam Headlights, Auto-dimming door mirrors, Auto-dimming Rear-View mirror, Automatic Emergency Braking, Automatic temperature control, Bed View Camera w/2 Trailer Camera Provisions, Bose Premium 7-Speaker Sound System, Brake assist, Buckle to Drive, Bumpers: body-color, Compass, Console-Mounted Safe (LPO), Deep-Tinted Glass, Delay-off headlights, Driver door bin, Driver Memory, Driver vanity mirror, Dual front impact airbags, Dual front side impact airbags, Electric Rear-Window Defogger, Electronic Stability Control, Emergency communication system: OnStar Services capable, Exterior Parking Camera Rear, 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 Rain-Sensing Wipers, Front reading lights, Front wheel independent suspension, Fully automatic headlights, GMC Premium 13.4" Diagonal Information Display, HD Surround Vision, Heated 2nd Row Outboard Seats, Heated door mirrors, Heated Driver & Front Outboard Passenger Seats, Heated front seats, Heated rear seats, Heated steering wheel, Heavy-Duty 80 Amp-Hr Battery, Hitch Guidance w/Hitch View, Illuminated entry, IntelliBeam Automatic High Beam On/Off, Keyless Open & Start, Lane Departure Warning System, LED Cargo Area Lighting, Low tire pressure warning, Manual Tilt-Wheel/Telescoping Steering Column, Memory seat, Occupant sensing airbag, Off-Road Suspension, Outside temperature display, Overhead airbag, Overhead console, Panic alarm, Passenger door bin, Passenger vanity mirror, Perforated Front Leather Seat Trim, Pickup Bed, Power door mirrors, Power driver seat, Power Front Windows w/Passenger Express Up/Down, Power passenger seat, Power steering, Power windows, Prem Front Price includes: GM employee purchase program*, $1500 - Active UAW-GM Hourly Employee Vehicle Allowance. Exp. 01/02/2026 $500 - Buick & GMC Consumer Cash Program. Exp. 12/01/2025 $500 - GM Rewards Card Sales Sign Up and Spend Offer. Exp. 01/02/2026
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Chassis Details

Stock Number
26G1770
Stock Type
New
Year
2026
Make
GMC
Model
Sierra 3500
Class
3
Drivetrain
4WD
Cab Type
Crew
Vehicle Trim
AT4
Interior Color
Jet Blk With Kalahari Acc
Seating Capacity
5
Exterior Color Description
Beige
Engine Cylinder Count
8
Transmission Type
Automatic
Fuel Type
Diesel
Engine Model
L5P
Engine Size (L)
6.6
Brake Type
Hydraulic

Vehicle Options

  • AT4 Preferred Package
  • AT4 Premium Plus Package
  • Gooseneck/5th Wheel Prep Package
  • Snow Plow Prep/Camper Package
  • Technology Package
  • X31 Off-Road Package
  • 3 Years SiriusXM
  • 7 Speakers
  • AM/FM radio: SiriusXM with 360L
  • Bose Premium 7-Speaker Sound System
  • Premium audio system: Premium GMC Infotainment System
  • Radio: AM/FM w/Premium GMC Infotainment System
  • SiriusXM w/360L Trial Subscription
  • Steering Wheel Audio Controls
  • Air Conditioning
  • Automatic temperature control
  • Electric Rear-Window Defogger
  • Front dual zone A/C
  • Rear window defroster
  • 120-Volt Bed Mounted Power Outlet
  • 120-Volt Instrument Panel Power Outlet
  • Driver Memory
  • Memory seat
  • Power driver seat
  • Power Front Windows w/Passenger Express Up/Down
  • Power steering
  • Power windows
  • Push Button Start
  • Remote keyless entry
  • Remote Vehicle Starter System
  • Steering wheel mounted audio controls
  • Universal Home Remote
  • Manual Tilt-Wheel/Telescoping Steering Column
  • Off-Road Suspension
  • Speed-sensing steering
  • Traction control
  • 4-Wheel Disc Brakes
  • ABS brakes
  • Dual front impact airbags
  • Dual front side impact airbags
  • Emergency communication system: OnStar Services capable
  • Front anti-roll bar
  • Front wheel independent suspension
  • Keyless Open & Start
  • Low tire pressure warning
  • Occupant sensing airbag
  • Overhead airbag
  • Power Sunroof
  • Pickup Bed
  • Brake assist
  • Electronic Stability Control
  • Lane Departure Warning System
  • Exterior Parking Camera Rear
  • Hill Descent Control
  • Auto High-beam Headlights
  • Delay-off headlights
  • Front fog lights
  • Fully automatic headlights
  • Panic alarm
  • Security system
  • Unauthorized Entry Theft-Deterrent System
  • Speed control
  • 2-Speed Active Transfer Case
  • 220 Amp Alternator
  • Heavy-Duty 80 Amp-Hr Battery
  • Auto-dimming door mirrors
  • Bumpers: body-color
  • Heated door mirrors
  • IntelliBeam Automatic High Beam On/Off
  • LED Cargo Area Lighting
  • LED Smoked Amber Roof Marker Lamps
  • Off-Road High Clearance Step (LPO)
  • Power door mirrors
  • Rear step bumper
  • Rear Wheelhouse Liners
  • Spray-On Pickup Bedliner w/GMC Logo
  • Turn signal indicator mirrors
  • 2 Charge-Only Rear USB Ports
  • 2 Charge/Data USB Ports Inside Center Console
  • 2 USB Ports
  • All-Weather Floor Liners w/AT4 Logo (LPO)
  • Auto-Dimming Inside Rearview Mirror w/Camera
  • Auto-dimming Rear-View mirror
  • Automatic Emergency Braking
  • Bed View Camera w/2 Trailer Camera Provisions
  • Buckle to Drive
  • Compass
  • Console-Mounted Safe (LPO)
  • Driver door bin
  • Driver vanity mirror
  • Floor-Mounted Center Console
  • Following Distance Indicator
  • Forward Collision Alert
  • Front Pedestrian Braking
  • Front reading lights
  • GMC Premium 13.4" Diagonal Information Display
  • HD Surround Vision
  • Heated steering wheel
  • Illuminated entry
  • Multicolor 15" Diagonal Head-Up Display
  • Outside temperature display
  • Overhead console
  • Passenger vanity mirror
  • Prem Front Floor Liners w/Removable Carpet Insert
  • Prem Rear Floor Liners w/Removable Carpet Insert
  • Rear Cross Traffic Alert
  • Rear reading lights
  • Rear seat center armrest
  • Safety Alert Seat
  • Tachometer
  • Telescoping steering wheel
  • Tilt steering wheel
  • Trailer Camera Provisions
  • Trailer Side Blind Zone Alert
  • Trip computer
  • Ultrasonic Front & Rear Park Assist
  • Voltmeter
  • Wireless Charging
  • Wireless Phone Projection
  • 10-Way Power Driver Seat Adjuster w/Lumbar
  • 10-Way Power Passenger Seat Adjuster w/Lumbar
  • Front Bucket Seats
  • Front Center Armrest
  • Heated 2nd Row Outboard Seats
  • Heated Driver & Front Outboard Passenger Seats
  • Heated front seats
  • Heated rear seats
  • Perforated Front Leather Seat Trim
  • Power passenger seat
  • Split folding rear seat
  • Ventilated Driver & Front Passenger Seats
  • Ventilated front seats
  • Passenger door bin
  • Hitch Guidance w/Hitch View
  • Trailer Tire Pressure Monitor Sensors
  • Alloy wheels
  • Wheels: 20" High Gloss Black 8 Spoke Aluminum
  • Deep-Tinted Glass
  • Front Rain-Sensing Wipers
  • Power Sliding Rear Window w/Defogger
  • Rain sensing wipers
  • Variably intermittent wipers
  • View All
New 2026 GMC Sierra 3500 AT4 Crew Cab for sale #26G1770 - photo 2
Photos may be stock images.

Body Details

Body Type
Pickup
Call For Pricing

Pricing Details

MSRP $91,104
Dealer Discount - $11,555
Family Deal Price $79,549
Total Savings $11,555
Additional Upfit Cost

Vehicle available NOW in Highland, MI.

Contact LaFontaine Cadillac Buick GMC Highland for more info.

(248) 971-2387

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