EPA estimate 26 MPG Hwy/22 MPG City! Onyx Black exterior and Jet Black with Kalahari accents interior, AT4 trim.
KEY FEATURES INCLUDE
4x4, Heated Driver Seat, Cooled Driver Seat, Back-Up Camera, Satellite Radio. GMC AT4 with Onyx Black exterior and Jet Black with Kalahari accents interior features a Straight 6 Cylinder Engine with 355 HP at 5600 RPM*.
OPTION PACKAGES
AT4 VALUE PACKAGE includes (PDO) AT4 Preferred Package, (R3O) LT275/65R18C MT blackwall Goodyear Wrangler DuraTrac tires, (PQB) Driver Alert Package, AT4 PREFERRED PACKAGE includes (UG1) Universal Home Remote, (A48) rear sliding power window, (IOT) 8" diagonal Premium GMC Infotainment with navigation, (UQA) Bose Premium Audio System and (K4C) Wireless Charging, SUNROOF, POWER, ENGINE, DURAMAX 3.0L TURBO-DIESEL I6 (277 hp [206.6 kW] @ 3750 rpm, 460 lb-ft of torque [623.7 N-m] @ 1500 rpm) Includes (KW5) 220-amp alternator and (K05) engine block heater.), DRIVER ALERT PACKAGE I includes (UD5) Front and Rear Park Assist, (UKC) Lane Change Alert with Side Blind Zone Alert and (UFG) Rear Cross Traffic Alert (Includes Perimeter Lighting. WHEELS, 20" X 9" (50.8 CM X 22.9 CM) MACHINED ALUMINUM WITH CARBON GREY METALLIC ACCENTS, AUDIO SYSTEM, PREMIUM GMC INFOTAINMENT SYSTEM WITH NAVIGATION AND 8" DIAGONAL COLOR TOUCH-SCREEN, INCLUDES MULTI-TOUCH DISPLAY, AM/FM STEREO Bluetooth® streaming audio for music and most phones; featuring wireless Android Auto® and Apple CarPlay® capability for compatible phones, advanced voice recognition, in-vehicle apps, personalized profiles for infotainment and vehicle settings. Includes greater memory Note: (PZ8) Hitch Guidance with hitch view is included with trim.), SEATS, HEATED SECOND ROW OUTBOARD SEATS Standard on models built before 7-26-2021. Certain vehicles built on or after 7-26-2021 will include (RFU) Not Equipped with Heated Second Row Outboard Seats, which removes (KA6) Heated Second Row Outboard Seats. See dealer for details.), TRANSMISSION, 10-SPEED AUTOMATIC, ELECTRONICALLY CONTROLLED with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (Most vehicles built on or after 6-7-2021 with a V8 engine and (MQB) 10-speed automatic transmission will have (NSS) Not Equipped with Automatic Stop/Start, which removes Automatic Stop/Start and its content.) (STD).
Horsepower calculations based on trim engine configuration. Fuel economy calculations based on original manufacturer data for trim engine configuration. Please confirm the accuracy of the included equipment by calling us prior to purchase.
2021 GMC Sierra 1500 AT4
- Used
- Diesel
Photos Coming Soon
This GMC Sierra 1500 AT4 of is new to our inventory, but check to see if we can get you early access to photos!
Request PhotosCall for James Specials
James Chevrolet
Call 518-872-8248
We’re here to help
The overview
- Exterior Color
- Onyx Black
- Interior Color
- JET BLACK WITH KALAHARI ACCENTS, PERFORATED LEATHE
- Odometer
- 70,256 miles
- Fuel Economy
- 14/19 MPG City/Hwy
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- Engine: Duramax 3.0L, Turbo-Diesel, Inline 6 Cylinder
- VIN
- 3GTU9EET7MG244415
- Stock Number
- N16912B
The full specifications
- Max seating capacity: 5
- Fuel System: Direct Injection
- Fuel tank capacity: 24 gal
- Horsepower: 277
Notes from the dealer
KBB.com Consumer Reviews
4.0out of 5 overall- 4.0
Depreciation of 50%
by Manny A on 10/28/2026 10:06:36 AM
This is a amazing truck.. Comfortable lots of sensors Etc…. My truck has 30000 miles I when to trade in they offer $46000 I paid $86000 the depreciation is incredible I don’t buy new truck never again. - 5.0
2021 GMC SLT 4WD SIERRA, Great Truck
by Ransom1 on 10/15/2026 4:18:42 PM
This is my 8th truck. This is hands down the very best truck I’ve ever owned. Not only is it the best looking truck on the road I have never had it in the shop except for oil changes and scheduled maintenance. The silver does not show dirt or grime. - 5.0
Great 4 cylinder truck
by Steve on 9/23/2026 2:01:15 AM
I have only pulled a trailer one time and still got 18 mpg down doing 80 down the interstate. Otherwise this vehicle is used for commuting or recreating. I typically get 22-24 mpg driving MT highways to the mountains. The turbo has some spunk for getting up to speed and the five years I've had my truck no complaints.
* The advertised price does not include sales tax, vehicle registration fees, other fees required by law, finance charges and any documentation charges. A negotiable administration fee, up to $115, may be added to the price of the vehicle.
* Images, prices, and options shown, including vehicle color, trim, options, pricing and other specifications are subject to availability, incentive offerings, current pricing and credit worthiness.
*** Payment estimate is based on published vehicle price minus a customer cash or trade equity down payment of twenty five percent (25%). Loan term 6 years / 72 months @ 2.9% APR for well qualified buyers, not everyone will qualify, financing rates form all banks and lenders vary as they are based on your credit score. For accurate estimate please contact our finance department (315) 508-4081. Offers & Availability subject to change without notice. Contact dealer for most current information Vehicle prices do not include additional fees and costs of closing, including government fees and taxes, any finance charges, any dealer documentation fees.
*These estimates reflect new EPA methods beginning with 2008 models. Your actual mileage will vary depending on how you drive and maintain your vehicle. Actual mileage will vary with options, driving conditions, driving habits and vehicle's condition. Mileage estimates may be derived from previous year model.
*Market adjustment may affect price