2024 GMC SIERRA 3500HD

If you're searching for a 2024 GMC Sierra 3500HD AT4 for sale in Yakima, WA, this Summit White Crew Cab is exactly the kind of hard-working, feature-rich heavy-duty truck that serious buyers in the Pacific Northwest have been waiting for. Available now at Prestige Motors Yakima, this 3500HD AT4 combines legendary Duramax diesel power with rugged off-road capability and premium comfort — all in a package that's ready to work, tow, and explore from day one.

About This 2024 GMC Sierra 3500HD AT4

This 2024 GMC Sierra 3500HD AT4 is a Crew Cab 4WD truck finished in classic Summit White, bringing a clean, commanding presence on the road or the job site. With 66,816 miles on a commercial-grade diesel platform engineered for high mileage, this truck is well within its stride. Duramax diesel trucks are routinely trusted to run well past 200,000 miles with proper maintenance, so this Sierra 3500HD represents significant remaining service life at a price point well below new. Stock number 20229 is on the lot now — and trucks like this in the AT4 trim don't last long in central Washington.

2024 GMC Sierra 3500HD Performance and Engine

Duramax 6.6L V8 Turbodiesel Power

Under the hood sits GM's acclaimed Duramax 6.6L V8 Turbodiesel, paired with a smooth-shifting 10-Speed Automatic transmission and full-time 4WD. In real-world terms, this engine configuration produces massive torque output that makes it exceptional for towing fifth-wheel trailers, flatbeds, horse trailers, and heavy equipment — common demands for buyers throughout Yakima County and the surrounding agricultural regions. The 10-speed automatic keeps the engine in its optimal power band, delivering confident passing power on highways and steady pulling performance on grades like those found on US-12 heading over White Pass.

The 4WD drivetrain means you're not just covered on the highway — you're ready for unpaved ranch roads, muddy harvest fields, and snowy mountain routes when Central Washington winters turn serious.

GMC Sierra 3500HD AT4 Features and Interior

What the AT4 Trim Delivers

The AT4 is GMC's off-road-focused premium trim, and it bridges the gap between the workhorse Pro and the ultra-luxury Denali. Inside the Crew Cab, you'll find a genuinely spacious four-door cabin with rear-seat room that's comfortable for adult passengers on long hauls. The AT4 trim typically includes features like a MultiPro tailgate, an off-road suspension with Rancho shocks, skid plates for underbody protection, a spray-in bed liner, and premium infotainment technology through GMC's large center display.

Expect amenities like heated front seats, a leather-appointed interior, Apple CarPlay and Android Auto integration, and GMC's intuitive driver information center. This is a truck you can climb out of after a long work day without feeling beaten up — and that matters for daily drivers in Yakima.

GMC Sierra 3500HD Reliability and Ownership

The Sierra 3500HD with the Duramax diesel has built one of the strongest reputations in the heavy-duty truck segment. The 6.6L Duramax engine — developed in partnership with Isuzu — has been refined over multiple generations and is widely regarded among professional truck drivers, farmers, and fleet managers as one of the most dependable diesel engines on the market. Common owner feedback highlights the engine's longevity, strong towing stability, and relatively straightforward maintenance compared to competitors.

The Allison-co-developed 10-speed automatic transmission used in GM's HD trucks is known for smooth, reliable shifts under heavy load. When properly maintained, these trucks serve for well over a decade in demanding work environments. For buyers in Yakima County who depend on their truck six or seven days a week, that kind of reliability is non-negotiable.

Why Buy From Prestige Motors Yakima in Yakima, WA

Prestige Motors Yakima, located in Yakima in the heart of Yakima County, Washington, has built a reputation for stocking quality pre-owned vehicles that meet the real-world needs of Central Washington buyers. When you're making a significant investment in a heavy-duty work truck, you want a dealership that's straightforward and knowledgeable — and Prestige Motors Yakima delivers that experience.

The team understands that buyers in this region aren't shopping for show trucks. They need vehicles that perform, and they deserve honest answers about what they're buying. Come in, ask the hard questions, and take this Sierra 3500HD on a test drive that actually puts the truck to work.

Financing a Used GMC Sierra 3500HD Near Yakima

Financing a heavy-duty truck doesn't have to be complicated. Prestige Motors Yakima works with a network of lenders to find financing solutions that fit a wide range of credit situations — whether you have excellent credit, are rebuilding, or are a first-time truck buyer. Self-employed buyers, agricultural workers, and small business owners are all welcome to explore their options.

The Sierra 3500HD is competitively priced — see the current price listed directly on this page. Contact the finance team at Prestige Motors Yakima to get pre-qualified and understand your monthly options before you visit. Reach them at 509-457-5000.

Frequently Asked Questions

Is the 2024 GMC Sierra 3500HD a good buy?

Yes — the 2024 Sierra 3500HD is widely considered one of the top heavy-duty pickups available. With its Duramax diesel engine, refined 10-speed transmission, and strong towing and payload ratings, it competes at the highest level of the HD truck segment. The AT4 trim adds off-road hardware that makes it even more versatile for buyers who need to go beyond paved roads.

Is 66,000 miles too many for a Duramax diesel truck?

Not at all. Duramax diesel engines are built for high-mileage, high-load applications. Many well-maintained Duramax-powered trucks reach 300,000 miles or more. At 66,816 miles, this 2024 Sierra 3500HD is well broken in but has the vast majority of its service life ahead of it — especially if maintained on a regular schedule.

What does the GMC Sierra 3500HD AT4 trim include?

The AT4 trim on the Sierra 3500HD includes off-road-specific upgrades like Rancho shocks, front recovery hooks, skid plates, and an off-road suspension tune. It also adds premium interior features including leather seating, the MultiPro tailgate, GMC's infotainment system with a large touchscreen, and driver-assist technology. It's positioned as a premium work truck with genuine off-road credentials.

How much can a 2024 GMC Sierra 3500HD tow?

Properly equipped, the 2024 GMC Sierra 3500HD with the Duramax diesel is rated to tow up to approximately 36,000 pounds when configured for fifth-wheel or gooseneck towing. Conventional towing ratings are also class-leading. This makes it one of the most capable production pickup trucks available for heavy trailer work.

Where can I test drive a GMC Sierra 3500HD near Yakima, WA?

You can test drive this exact 2024 GMC Sierra 3500HD AT4 — Stock #20229 — at Prestige Motors Yakima in Yakima, Washington. Call 509-457-5000 to confirm availability and schedule your visit.

Serving Yakima and Surrounding Areas

Prestige Motors Yakima proudly serves buyers throughout Yakima County and the broader Central Washington region. Drivers regularly make the trip from Selah, Union Gap, Wapato, Tieton, Naches, Moxee, and Sunnyside to browse the inventory at Prestige Motors Yakima. Buyers from Ellensburg and the Kittitas Valley, as well as communities along the Yakima River corridor, find the dealership easy to reach via I-82 and US-12.

Whether you're farming in the Yakima Valley, hauling equipment into the Cascades, or simply need a truck that handles whatever Central Washington throws at it, this Sierra 3500HD AT4 is well worth the drive.

Contact Prestige Motors Yakima Today

Don't let this 2024 GMC Sierra 3500HD AT4 sit on the lot for long — heavy-duty diesel trucks in this trim and configuration move quickly. Contact Prestige Motors Yakima today at 509-457-5000 to ask questions, confirm availability, or schedule a test drive. The team is ready to help you get behind the wheel of one of the most capable trucks in its class. Visit Prestige Motors Yakima in Yakima, WA, and drive away in a truck that was built to handle the work you do every day.