GMC Sierra 1500 Diesel

The 2026 GMC Sierra 1500 Diesel AT4 pickup delivers a powerful mix of performance, capability, and efficiency with its 3.0-liter inline-6 diesel engine producing 305 hp and 495 lb-ft of torque. Paired with a 10-speed automatic transmission and four-wheel drive, it achieves an estimated 24 MPG combined while offering a strong 9,000-lb towing capacity and 1,670-lb payload. With seating for five, a 69.9-inch bed, 11.1-inch ground clearance, and advanced features like descent control and a limited-slip differential, this rugged truck is built for both daily driving and demanding off-road or hauling tasks.

Your question is: GMC Sierra 1500 Diesel AT4?

Which question will you have about this car? Let’s justify these. There, we are including the major questions and answers about this car. So, let’s start now.

What engine does the 2026 AT4 Diesel use?

The 2026 AT4 Diesel is powered by a 3.0-liter inline-6 turbo diesel engine that produces 305 horsepower and 495 lb-ft of torque, delivering strong pulling power and smooth highway performance.

How fuel-efficient is the 2026 AT4 Diesel?

This truck has an EPA-estimated 22 MPG in the city and 26 MPG on the highway, with a combined rating of 24 MPG, which is competitive for a full-size diesel pickup.

What is the towing capacity of the 2026 AT4 Diesel?

The truck can tow up to 9,000 pounds, making it suitable for hauling trailers, boats, or work equipment.

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