Disclaimer:
The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
1Dealer Discount applied to everyone
This 2026 GMC Sierra 1500 AT4 In-Transit delivers capability and refinement built for those who demand both power and purpose. Standing out with its pristine white exterior, this truck arrives ready to handle any task while commanding respect on the road.
- EcoTec3 6.2L V8 engine with 420 hp and 460 lb-ft of torque
- 10-Speed Automatic transmission with 4WD
- Premium Bose 7-Speaker Sound System with SiriusXM 360L Trial Subscription
- Power Sunroof for open-air driving comfort
- Heated and ventilated front seats with 10-way power adjustment
- Multicolor 15 Head-Up Display with navigation system
- HD Surround Vision and Rear Camera Mirror for enhanced visibility
- Integrated Trailer Brake Controller with in-vehicle trailering app
- Auto-Locking Rear Differential and off-road suspension
- Wireless Apple CarPlay and Android Auto connectivity
- Ultrasonic front and rear park assist with rear cross traffic braking
- Multiple power outlets including 120-volt bed-mounted option
- Heated steering wheel and power sliding rear window
- 20 machined aluminum wheels
- Remote vehicle starter system with keyless open and start
The AT4 Preferred Package elevates this truck with purposeful engineering designed for confident performance. Its off-road suspension and auto-locking rear differential provide the foundation for tackling challenging terrain, while the hill descent control adds another layer of control when descending steep grades. The integrated trailering system, complete with trailer camera provisions and hitch guidance, makes managing a trailer straightforward and secure.
Technology surrounds you with capability and convenience. The navigation system works alongside wireless smartphone integration, keeping you connected whether you're navigating city streets or remote roads. The multicolor head-up display presents critical information directly in your line of sight, and the surround vision system gives you confidence when maneuvering in tight spaces. Multiple USB ports and a wireless charging pad ensure your devices stay powered throughout the day.
Comfort features make this truck an extension of your lifestyle. Heated and ventilated front seats with lumbar support adapt to your preferences, while the heated steering wheel and power sunroof add touches of refinement. The premium Bose audio system with SiriusXM satellite radio transforms your daily commute into a premium experience. Remote vehicle starter means you can have the climate set before you even step outside.
The AT4 In-Transit is engineered for those who value capability without compromise. With 14 city and 17 highway MPG, this truck balances the V8's formidable performance with reasonable efficiency. The Trailering Package and Technology Package provide the infrastructure to handle real-world demands, whether you're towing equipment or managing complex driving situations with confidence.
This is a truck that respects your investment by delivering genuine capability, refined comfort, and technology that enhances every drive. Schedule your visit to experience the 2026 Sierra 1500 AT4 In-Transit firsthand. Not all customers may qualify for all rebates listed, see dealer for details. Price includes: $6250 - Buick & GMC Consumer Cash Program. Exp. 11/30/2026 Price includes $63,000 in dealer added accessories.