This 2021 GMC Sierra 1500 AT4 represents a commanding presence on the road, combining capability with refined sophistication and advanced technology to meet the demands of discerning truck owners.
- Power Sunroof
- Technology Package with HD Surround Vision and Rear Camera Mirror
- Multicolor 15" Head-Up Display
- EcoTec3 6.2L V8 with Dynamic Fuel Management
- Driver Alert Package II with Automatic Emergency Braking and Adaptive Cruise Control
- Off-Road Suspension with Hill Descent Control
- Heated and Ventilated Leather Front Seats
- Premium Bose 7-Speaker Sound System with SiriusXM
- Bed View Camera and Ultrasonic Park Assist
- ProGrade Trailering System with Integrated Trailer Brake Controller
- Power Sliding Rear Window with Defogger
- 18" Machined Aluminum Wheels
- Spray-On Bed Liner with AT4 Logo
- Lane Keep Assist with Lane Departure Warning
- Apple CarPlay and Android Auto Integration
The AT4 platform delivers rugged capability through an off-road suspension system and hill descent control, ensuring confident handling whether navigating city streets or challenging terrain. The EcoTec3 6.2L V8 engine employs dynamic fuel management technology that adjusts between cylinder patterns to balance power and efficiency, achieving 15 city and 19 highway MPG.
Inside, the cabin reflects premium craftsmanship with heated and ventilated leather seating for the driver and front passenger. A 15-inch multicolor head-up display projects essential driving information directly into your line of sight, while the 8-inch digital driver information center keeps you informed at a glance.
Technology integration enhances both convenience and safety. The suite of driver assistance features includes adaptive cruise control, automatic emergency braking, forward collision alert, lane keep assist with departure warning, and front pedestrian braking. Safety alert seat technology provides tactile feedback for enhanced awareness. Ultrasonic front and rear park assist, combined with multiple camera systems including bed view and rear camera mirror, simplifies maneuvering in tight spaces.
For those who require versatility, the ProGrade Trailering System with integrated trailer brake controller and hitch guidance provides confidence when towing. The power sliding rear window with defogger and spray-on bed liner with AT4 logo adds both function and distinctive character.
With 56,644 miles representing careful ownership and regular maintenance, this Sierra AT4 stands ready for the next chapter of dependable service. The combination of commanding presence, advanced safety systems, and genuine off-road capability makes this truck an intelligent choice for buyers who demand both substance and sophistication in their vehicle investment.
2021 GMC Sierra 1500 AT4
- Used
- Price
- $41,846
- Document Fee
- $599
- Price After Fees
- $42,445
- Dealer Added Optional Accessories
- $397
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The overview
- Exterior Color
- Onyx Black
- Interior Color
- Jet Black With Kalahari Accents
- Odometer
- 56,644 miles
- Body/Seating
- Truck/5 seats
- Seats
- 5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
- Engine
- EcoTec3 6.2L V8
- VIN
- 1GTP9EEL0MZ255995
- Stock Number
- 261280A
The highlights
- Leather upholstery
- Automatic temperature control
- Wireless phone connectivity
- Front dual zone A/C
- Auto-dimming rearview mirror
- Split folding rear seat
- Memory seat
- Heated front seats
- Ventilated front seats
- Perimeter/approach lights
- Remote keyless entry
- Heated steering wheel
The full specifications
- 1-touch down
- 1-touch up
- Air conditioning
- Auto-dimming rearview mirror
- Automatic temperature control
- Driver door bin
- Driver vanity mirror
- Front beverage holders
- Front dual zone A/C
- Heated steering wheel
- Illuminated entry
- Memory seat
- Overhead console
- Passenger door bin
- Passenger vanity mirror
- Power windows
- Proximity key: doors and push button start
- Rear beverage holders
- Rear door bins
- Remote engine start: keyfob
- Remote keyless entry
- Speed control
- Telescoping steering wheel
- Tilt steering wheel
- Alloy wheels
- Front anti-roll bar
- Front wheel independent suspension
- Power steering
- Speed-sensing steering
- Tires: all-terrain
- 1st row LCD monitors: 2
- Primary LCD size: 8.0"
- Radio data system
- Smart device integration: Apple CarPlay/Android Auto
- Steering wheel mounted audio controls
- Wireless phone connectivity: Bluetooth
- Front center armrest
- Front seats: bucket
- Heated front seats
- Leather upholstery
- Max seating capacity: 5
- Power 2-way driver lumbar support
- Power 2-way passenger lumbar support
- Power driver seat
- Power passenger seat
- Rear seat center armrest
- Rear seats: split-bench
- Rear seats Folding position: fold-up cushion
- Seat Upholstery: leather
- Split folding rear seat
- Ventilated front seats
- Cylinder deactivation
- Drive type: four-wheel
- Engine location: front
- Fuel economy city: 16mpg
- Fuel economy combined: 18mpg
- Fuel economy highway: 21mpg
- Fuel tank capacity: 24.0gal.
- Hybrid traction battery type: none
- Manual-shift auto
- Mode select transmission
- Rear locking differential
- Standard fuel economy fuel type: gasoline
- Transmission: 10 speed automatic
- Variable valve control
- Ground clearance (min): 276mm (10.9")
- Auto-dimming door mirrors
- Bedliner
- Bumpers: body-color
- Heated door mirrors
- Left rear passenger door: conventional
- Power door mirrors
- Rear cargo: tailgate
- Rear step bumper
- Right rear passenger: conventional
- Skid plates
- Trailer hitch receiver
- Trailer sway control
- Exterior body width: 2,063mm (81.2")
- Exterior height: 1,990mm (78.3")
- Exterior length: 5,885mm (231.7")
- Front headroom: 1,093mm (43.0")
- Front hiproom: 1,554mm (61.2")
- Front legroom: 1,131mm (44.5")
- Front shoulder room: 1,677mm (66.0")
- Rear headroom: 1,019mm (40.1")
- Rear hiproom: 1,530mm (60.2")
- Rear legroom: 1,102mm (43.4")
- Rear shoulder room: 1,655mm (65.2")
- Wheelbase: 3,744mm (147.4")
- Appearance: analog
- Compass
- Delay-off headlights
- Front fog lights
- Front reading lights
- Fully automatic headlights
- Low tire pressure warning
- Oil pressure gauge
- Outside temperature display
- Rear reading lights
- Rear window defroster
- Tachometer
- Trip computer
- Variably intermittent wipers
- Voltmeter
- 4 wheel disc brakes
- ABS brakes
- Brake assist
- Dual front impact airbags
- Dual front side impact airbags
- Electronic stability
- Ignition disable
- Occupant sensing airbag
- Overhead airbag
- Panic alarm
- Perimeter/approach lights
- Security system
- Traction control
Notes from the dealer
KBB.com Consumer Reviews
0.0out of 5 overall