Serviced here, Non-Smoker vehicle, Extra Clean. WAS $33,982, EPA estimate 26 MPG Hwy/22 MPG City! $1,300 below Kelley Blue Book! Heated/Cooled Seats, NAV, Tow Hitch, Satellite Radio, Back-Up Camera, 4x4, Alloy Wheels, Bed Liner, AT4 PREFERRED PACKAGE.
WHY BUY FROM US
At Beaverhead Motors, you'll get our best price, guaranteed. We offer transparent pricing, competitive financing, and the lowest documentation fee. Experience exceptional customer service, expert auto service, and a dealership that's part of your community.
OPTION PACKAGES
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, 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.), 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).
Pricing analysis performed on 11/5/2026. Fuel economy calculations based on original manufacturer data for trim engine configuration.
2021 GMC Sierra 1500 AT4
- Used
- Diesel
$29,792Our Best Price
Includes $391 Doc Fee
Includes $391 Doc Fee
Beaverhead Motors, Inc.
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The full specifications
- Max seating capacity: 5
- Fuel System: Direct Injection
- Fuel tank capacity: 24 gal
- Horsepower: 277
Notes from the dealer
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A name you can trust
Beaverhead Motors, Inc. 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
- 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.