FEATURED OPTIONS
VEHICLE INFORMATION
- PREMIUM GMC INFOTAINMENT SYSTEM
- HID HEADLAMPS
- DUAL AIR BAGS
- LED HEADLAMPS
- X31 OFF-ROAD PKG
- HILL DESCENT CONTROL
- FOG LIGHTS
- TRACTION CONTROL
- CRUISE CONTROL
- BACKUP CAMERA
- LEATHER
- DUAL POWER SEATS
- POWER DOOR LOCKS
- ABS (4-WHEEL)
- AIR CONDITIONING
- DAYTIME RUNNING LIGHTS
- NAVIGATION SYSTEM
- AM/FM/HD RADIO
- ALLOY WHEELS
- POWER STEERING
- HILL START ASSIST
- KEYLESS ENTRY
- TOWING PKG
- SIDE AIR BAGS
- SIRIUSXM SATELLITE
- POWER WINDOWS
- KEYLESS START
- BLUETOOTH WIRELESS
- ONSTAR
- F&R HEAD CURTAIN AIR BAGS
- BED LINER
- STABILITRAK
- TILT & TELESCOPING WHEEL
- THEFT DETERRENT SYSTEM
- HEATED & VENTILATED SEATS
OVERVIEW
This 2021 GMC Sierra 3500 HD Crew Cab AT4 is a serious heavy-duty truck built for people who actually use their trucks, not just drive them. It combines rugged off-road capability with premium comfort, making it just as confident on a job site as it is on the highway. The AT4 trim gives it an aggressive stance, factory off-road suspension, skid plates, and distinctive styling that sets it apart.
Inside, the Crew Cab offers a spacious,
well-appointed interior with high-quality materials, advanced technology, and plenty of room for passengers to ride comfortably. You’ll find a large touchscreen with Apple CarPlay and Android Auto, premium audio, multiple USB ports, and smart storage throughout the cabin. The 6½-foot bed provides the versatility and strength you need for hauling, towing, and everyday work, while GMC’s heavy-duty engineering delivers confidence and durability mile after mile. This Sierra 3500 HD AT4 is powerful, capable, and refined—built to handle tough jobs without giving up comfort or style.
