Meet the 2026 GMC Sierra 3500HD AT4, a commanding crew cab built for serious work and refined daily driving. This new heavy-duty truck combines the bold presence of GMC engineering with premium comfort and cutting-edge technology. Finished in striking red with a sophisticated jet black and Kalahari interior, it's engineered to deliver power, capability, and style.
Key Features:
- 6.6L V8 engine with 10-speed automatic transmission and 4WD
- Premium GMC Infotainment System with SiriusXM 360L and AM/FM radio
- Bose Premium 7-speaker sound system with steering wheel controls
- Heated and ventilated front bucket seats with 10-way power adjustment
- Heated second-row outboard seats and rear seat center armrest
- Wireless charging and wireless phone projection
- HD Surround Vision with bed view camera and trailer camera provisions
- X31 Off-Road Package with 2-speed active transfer case and hill descent control
- Automatic emergency braking, lane departure warning, and trailer side blind zone alert
- 20-inch high-gloss black aluminum wheels
This AT4 is loaded with safety technologies including forward collision alert, front pedestrian braking, and ultrasonic front and rear park assist. The spray-on bedliner with GMC logo and premium floor liners protect your investment, while the automatic high-beam headlights and rain-sensing wipers add everyday convenience.
Visit our showroom to experience the power and sophistication of this Sierra 3500HD firsthand and discover why it's the truck for discerning buyers.
Advertised price excludes mandatory government fees (tax, title, license, and registration). All lease or finance rates/terms are subject to buyer qualifications and lender requirements; special incentivized rates/offers may not be combinable with other purchase incentives. Price excludes any optional products, services, or accessories customer chooses to purchase. At Zeigler, we believe our customers deserve an easy transparent buying experience. That means the price you see is the price you can expect, with no hidden fees or charges at the time of purchase. Although every reasonable effort has been made to ensure the accuracy of the information presented on this site, inadvertent errors, omissions, and other inaccuracies may occur. We strive to update our inventory as quickly as possible, but there can be a lag time between the sale of a vehicle and the update of inventory on our website. For the best customer experience, please verify all vehicle information and pricing with the de
New 2026 GMCSierra 3500HD AT4
All vehicle specifications, prices and equipment are subject to change without notice. See above for information on purchase financing and lease program expiration dates. Prices and payments (including the amount down payment) do not include tax, titles, tags, documentation charges, emissions testing charges, or other fees required by law or lending organizations. The estimated payments may not include upfront finance charges that must be paid to be eligible for the purchase financing program used to estimate the APR and payments. Listed Annual Percentage Rates are provided for the selected purchase financing or lease programs available on the current date. Program expiration dates reflect currently announced program end dates, but these programs are subject to change at any time.
Lessees will be financially responsible for mileage beyond the elected quantity and for vehicle maintenance and repairs and excessive vehicle wear. Option to purchase at lease end for an amount may be determined at lease signing. Payments may be higher in some states. You may not be able to combine other incentives with the purchase financing or leasing programs presented above. Residency restrictions may apply. See dealer for details.
Listed APR, down payment, payments, incentives and other terms are estimates for example purposes only. Information provided is based on very well-qualified buyers or lessees. The payment information provided here is not a commitment by any organization to provide credit, leases or other programs. Some customers may not qualify for listed programs. Your terms may vary. Lessor must approve lease. Credit approval required.

