This 2021 GMC Sierra 1500 AT4 in gray combines capable performance with refined interior comfort, offering a well-equipped truck ready for both work and everyday driving.

- 20 Machined Aluminum Wheels with Painted Accents
- 4WD with Auto-Locking Rear Differential
- EcoTec3 5.3L V8 Engine with 10-Speed Automatic
- Bose Premium 7-Speaker Audio System
- Technology Package with HD Surround Vision and Rear Camera Mirror
- Multicolor 15 Head-Up Display
- Driver Alert Package II with Adaptive Cruise Control and Automatic Emergency Braking
- Power Sunroof
- Leather Seating with Heated and Ventilated Front Seats
- Premium GMC Infotainment System with Navigation and Apple CarPlay/Android Auto
- Wireless Charging
- Integrated Trailer Brake Controller with ProGrade Trailering System
- Spray-On Pickup Bed Liner with AT4 Logo
- Power Sliding Rear Window with Defogger

The AT4 package equips this Sierra with genuine off-road capability combined with daily-use practicality. The 4WD system pairs with an auto-locking rear differential and hill descent control, while the suspension has been tuned for both rough terrain and highway stability. The truck rides on 20-inch machined aluminum wheels finished with carbon grey accents, presenting a professional appearance whether parked at the office or on the jobsite.

Inside, the cabin reflects thoughtful design with perforated leather-appointed front seats that offer both heating and ventilation. A 10-way power seat adjuster with lumbar support on the driver's side ensures comfort during long drives. The technology package positions a rear camera mirror on the windshield, bed view camera for backing up, and surround vision cameras for improved awareness. The 8-inch digital driver information center and multicolor head-up display keep essential data visible without distraction.

The infotainment system features an 8-inch touchscreen, premium navigation, and compatibility with both Apple CarPlay and Android Auto for seamless smartphone integration. SiriusXM satellite radio with 360L and a Bose premium audio system deliver quality entertainment throughout your drive. Wireless charging keeps compatible devices powered, while 4G LTE Wi-Fi hotspot capability and remote vehicle starter functionality add modern convenience.

Safety and driver assistance technology includes forward collision alert, lane keep assist with lane departure warning, automatic emergency braking, front pedestrian braking, and IntelliBeam high beam control. Adaptive cruise control with following distance indicator aids highway driving. The safety alert seat provides tactile feedback during potential hazards, while the trailer tire pressure monitoring system tracks all four wheel pressures.

For truck owners who tow, the integrated trailer brake controller and ProGrade trailering system provide confidence when connecting a trailer. The spray-on bed liner protects the cargo area and carries the AT4 logo as a mark of this model's purpose. Red recovery hooks stand ready when needed, and the truck includes a hitch guidance system with both visual and in-vehicle app support.

This Sierra 1500 AT4 delivers the capability and comfort you expect from GMC, backed by practical features that enhance ownership. Visit our showroom to experience this truck firsthand and discuss how its combination of technology, safety, and off-road readiness can meet your needs.