Used 2021 GMCSierra 2500 HD AT4 Truck Crew Cab
IMPERIAL CARS IS YOUR HOME FOR THE GMC Sierra 2500 HD IN MENDON, NEAR WORCESTER MA & PROVIDENCE RI
Thank you for your interest in this used 2021 GMC Sierra 2500 HD AT4 Truck Crew Cab on the lot at Imperial Cars! This Sierra 2500 HD AT4 is equipped with a Engine: , V-8, SIDI engine and Automatic transmission. Questions about this Sierra 2500 HD? The experienced team at Imperial Cars is just a phone call away! Contact us at (800) 526-2886 or come in for a test drive! Imperial Cars is your Milford, Framingham, Worcester MA & Providence RI area GMC dealership!
- Exterior Color
- Summit White
- Interior Color
- 4SB--Leather, Jet Black / Kalahari, Interior Trim
- Odometer
- 54,026 miles
- Transmission
- Automatic
- Drivetrain
- 4x4
- Engine
- Engine: 6.6L, V-8, SIDI
- VIN
- 1GT49PE71MF299152
- Stock Number
- C48324
GMC
Sierra 2500 HD
Included Packages & Accessories
Detailed Specifications
- Max seating capacity: 5
- Fuel System: Direct Injection
- Fuel tank capacity: 36 gal
- Horsepower: 401
Dealer Notes
Discover the ultimate in rugged capability and premium comfort with this 2021 GMC Sierra 2500HD AT4. This exceptional truck is the perfect blend of power, technology, and style, making it the ideal choice for those who demand the best.Boasting an impressive array of features, this Sierra 2500HD AT4 is equipped to handle any task with ease. Key highlights include: Navigation System Blind Spot Monitor Lane Keeping Assistance Cross Traffic Alert Apple CarPlay / Android Auto Power Leather Seats Heated Seats Backup Camera Bluetooth Cruise ControlThe AT4 Preferred Package further enhances the experience, offering a Bed View Camera, HD Surround Vision with Trailer View Camera Provisions, Universal Home Remote, 8 Premium GMC Infotainment System with Navigation, Bose Premium Audio System, Roof Marker Lamps, and Wireless Charging.Additionally, the Driver Alert Package I provides Front and Rear Park Assist, Lane Change Alert with Side Blind Zone Alert, and Rear Cross Traffic Alert, ensuring your safety and confidence on the road.Powered by a robust 6.6L V8 engine and paired with a 6-Speed Automatic transmission, this Sierra 2500HD AT4 delivers exceptional performance and capability. The 4WD system, Off-Road Suspension, and other rugged features make it the perfect companion for your adventures, whether taming the toughest terrain or tackling your toughest jobs.Step inside and you'll be greeted by a premium cabin that combines comfort and technology. Enjoy the convenience of features like Heated and Ventilated Front Bucket Seats, Heated Second-Row Outboard Seats, Wireless Charging, and a Bose Premium Audio System.This 2021 GMC Sierra 2500HD AT4 is the ultimate expression of power, capability, and refinement. With its impressive array of features and capabilities, it's the perfect choice for those who demand the very best. Schedule a test drive today and experience the difference for yourself.
KBB.com Consumer Reviews

Overall3.8Out of 5
- 2.0
Transmission trash
By Jason | on Monday, April 07, 2025
Bought a 2023 GMC Duramax diesel Sierra SLT had it for two years hit 50,000 miles. The throttlebody broke went in for service. Got it back three weeks at 62,000 miles now my transmission is slipping. I travel back-and-forth from South Carolina to North Carolina for work daughter’s truck would be my forever truck. What a joke Hundred thousand dollar truck junk… - 3.0
Infotainment system unreliable!
By Brian C | on Friday, June 27, 2025
The servicing dealer has been great, the GM engineers not so much! The truck will without warning have no sound for the radio and the blinkers. GM told the dealership to reprogram then when that didn't work they said replace the amplifier and when that didn't work, they said replace a module, and when that didn't work they said to replace the amplifier again, and when that didn't work they said we know it's a known problem but we don't know how to fix it. All of this with less than 9k miles. The dealer has done everything that GM has asked them to do, but none of it works. It's very frustrating to pay this much for a truck and you can't get the radio to stay working. It also got away from the factory with paint damage and a dent in the hood,( the dent is from the inside out on a double wall). I thought I was upgrading when I went from a F250 Lariat to a Denali, but I may have traded one headache for another.… - 5.0
Fantastic truck
By Jjj | on Sunday, November 07, 2021
This one of the most solid vehicles that I have ever driven! The 401 hp engine is more than enough power and the transmission is smooth! Highly recommend this truck!…
Based on 13 consumer ratings for 2020–2026 models. | Privacy
- Sticker
- $56,977
- Imperial Discount
- -$2,330
- Buy For*
- $54,647
- We're here to help: (508) 244-4865
- We're here to help: (508) 244-4865
