2021 GMC Sierra 3500HD AT4

Duramax Diesel Power. Heavy-Duty Capability. Off-Road Ready.
AT4 Crew Cab Built For Work And Adventure

This 2021 GMC Sierra 3500HD AT4 delivers exceptional Duramax diesel performance, serious towing capability, and rugged off-road styling. Finished in Summit White with a Jet Black/Kalahari interior, it offers a bold look with premium touches.

Key Features

146,080 miles

Duramax 6.6L V8 Turbo Diesel engine massive torque and towing capability

10-Speed Automatic Transmission

Four-Wheel Drive (4WD)

Summit White exterior

Jet Black with Kalahari accents interior

AT4 trim with off-road capability

Factory off-road suspension

Skid plates and underbody protection

All-terrain tires

Leather-appointed seating

Heated and ventilated front seats

Premium audio system

Large touchscreen infotainment system

Apple CarPlay & Android Auto

Backup camera and driver-assist features

Spacious Crew Cab interior

Important Vehicle Disclosure

This vehicle is being sold as-is due to mileage.

Summary

This 2021 GMC Sierra 3500HD AT4 combines powerful Duramax diesel performance, heavy-duty capability, and rugged off-road features. With its premium interior and 4WD system, its a great option for buyers who need serious performance with added comfort.
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