Drive Your Dreams: 2021 GMC Sierra 1500 AT4 Strength, Style & Smarts in One Tough Truck
At Tom Tepe Autocenter in Milan, Indiana, and Car Country in Aurora and Harrison, we proudly serve Southeast Indiana, Greater Cincinnati, and Northern Kentucky with vehicles that combine power, comfort, and capability. The 2021 GMC Sierra 1500 AT4 stands tall as the ultimate all-around pickup, rugged enough for the workday, refined enough for every adventure.
Built to Perform
Under the hood, the EcoTec3 5.3L V8 engine paired with a 10-speed automatic transmission delivers power and precision in every mile. With 4WD, an off-road suspension, and Hill Descent Control, the AT4 is built to conquer tough terrain without breaking a sweat. Whether you're towing equipment in Aurora, trail riding near Harrison, or commuting into Cincinnati, it's engineered for confidence and control. The Auto-Locking Rear Differential and In-Vehicle Trailering App make hauling easy, while Hitch Guidance with Hitch View ensures precision every time you connect a trailer.
Power Meets Premium Comfort
Inside, the AT4 balances bold design with upscale comfort. The Jet Black leather interior with Kalahari accents sets the tone, while heated and ventilated seats, a heated steering wheel, and dual-zone climate control keep you comfortable through Indiana winters or Kentucky summers. Both driver and passenger enjoy 10-way power seats with lumbar support and memory settings, and the power sunroof adds a touch of open-air luxury to your drive.
Technology That Works Hard
Stay connected and entertained with GMC's Premium Infotainment System with Navigation, featuring Apple CarPlay, Android Auto, and a Bose 7-speaker sound system. You'll also find multiple USB and 120V outlets, wireless charging, and 4G LTE Wi-Fi capability to keep everyone powered up and online. Every control is built around convenience because when you work hard, your truck should too.
Safety You Can Rely On
From the Driver Alert Package to Lane Change Alert with Side Blind Zone Alert, Rear Cross Traffic Alert, and an HD Rear Vision Camera, this Sierra has your back from every angle. Add Ultrasonic Park Assist and LED cargo lighting, and you're equipped for anything the road or jobsite throws your way.
Tri-State Tough, Dealer Tested
At Tom Tepe Autocenter and Car Country, every pre-owned vehicle, including this Sierra AT4, is ASE-certified and fully inspected for lasting quality. With our at or under market pricing, you'll drive home knowing you've made a smart, confident investment.
Visit https://www.TomTepe.com
to explore this incredible 2021 GMC Sierra 1500 AT4 and more vehicles that help you Drive Your Dreams across Milan, Aurora, Harrison, Greater Cincinnati, and Northern Kentucky.
Key Features
EcoTec3 5.3L V8 Engine w/ 10-Speed Automatic
4WD & Off-Road Suspension w/ Hill Descent Control
Heated & Ventilated Leather Seats w/ Kalahari Accents
GMC Infotainment System w/ Navigation & Bose Audio
Apple CarPlay / Android Auto
ProGrade Trailering System w/ Hitch Guidance
Power Sunroof & Dual-Zone Climate Control
HD Rear Vision Camera & Driver Alert Package
#TomTepeAutocenter #CarCountry #GMCSierra #SierraAT4 #MilanIN #AuroraIN #HarrisonOH #GreaterCincinnati #NorthernKentucky #DriveYourDreams
2021 GMC Sierra 1500 AT4
- Used
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Tom Tepe Autocenter | Car Country
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The overview
- Exterior Color
- Summit White
- Interior Color
- Jet Black With Kalahari Accents
- Odometer
- 71,727 miles
- Body/Seating
- Truck/5 seats
- Transmission
- 10-Speed Automatic
- Drivetrain
- 4WD
- Engine
- EcoTec3 5.3L V8
- VIN
- 1GTP9EED3MZ210395
- Stock Number
- 48889A
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
Peace of mind
Vehicle history report
- Title information
- Odometer readings
- Accident data (if applicable)
- Service history
- Vehicle usage
- Recall information (if applicable)
- Warranty status
A name you can trust
Tom Tepe Autocenter | Car Country is dedicated to your satisfaction before, during, and after your purchase. We'll go the extra mile to take care of you.
More about usKBB.com Consumer Reviews
4out of 5 overall- 3.0
Nice truck
by froggy on Sunday, December 06, 2020
I purchased this truck brand new and at 3900 miles I started to have a misfire. The warranty put a refurbished rebuilt engine in it. I was not aware that the warranty doesn't put new parts in just refurbished rebuilt parts. I traded in and lost my favorite blue truck. Not a fan of the whole process. Love the truck just not how the warranty went. I would not own another brand or model the 2020 is the nicest riding and looking. Just got a bad motor from the manufacture. - 5.0
Great Truck
by Mel on Sunday, April 25, 2021
I love it, I get compliments every where I go, and it apparently worth more than I paid for it brand new, a year and a half later. can't ask for much more than that. - 5.0
Well done GM
by Tony on Thursday, November 26, 2020
This truck has a 10 speed transmission that you can barely feel it shift. Traded in an F150 and test drove a similar equipped Ram. Although the Ram was nice, the styling of the GMC won me over, along with the tailgate! It also pulls my boat way better than the Ford, just smoother all around. The cabin is very quiet and the gas mileage is much better than V8 Ford. The cabin is super quiet and the ride is awesome. Love the adaptive cruise control too. The technology is fine and the screen is plenty big. Remember, you are driving this truck, not going to thr drive in! Most importantly, the controls are simple to use and Bose stereo sounds great! Oh, and I got it cheaper than the similar Ram too!
