2023 GMC SIERRA 3500HD

If you're searching for a capable, purpose-built heavy-duty truck that doesn't compromise on comfort or off-road credibility, this 2023 GMC Sierra 3500HD AT4 for sale at Prestige Motors Pasco in Pasco, WA is exactly what serious truck buyers have been waiting for. Finished in a commanding Black exterior and loaded with the Sierra's legendary AT4 off-road package, this crew cab diesel is ready for work, play, and everything in between — all with under 90,000 miles on a Duramax engine that's just getting warmed up.

About This 2023 GMC Sierra 3500HD AT4

The 2023 Sierra 3500HD AT4 sits at the intersection of raw capability and premium refinement. With 89,249 miles on the odometer, this truck is well within the working life of a Duramax diesel — these powertrains are routinely documented past 300,000 miles with proper maintenance. The crew cab body style means four full doors and a rear seat that actually accommodates adults comfortably, making this just as practical for family road trips as it is for hauling heavy loads across Franklin County. The all-black exterior gives it an aggressive, clean look that turns heads on the job site and in the city.

2023 GMC Sierra 3500HD Performance and Engine

Duramax 6.6L V8 Turbodiesel Power

Under the hood lives the legendary Duramax 6.6L V8 Turbodiesel — one of the most respected diesel engines in the heavy-duty truck segment. This engine produces up to 470 horsepower and a massive 975 lb-ft of torque, giving the Sierra 3500HD a maximum conventional towing capacity of up to 23,100 pounds and a payload of over 7,000 pounds depending on configuration. Whether you're towing a fifth-wheel through the Columbia Basin or hauling construction equipment around the Tri-Cities area, this engine delivers serious capability without breaking a sweat.

10-Speed Automatic Transmission and 4WD

Paired with a smooth-shifting 10-speed automatic transmission, the Duramax stays in its optimal power band across a wide range of driving conditions. The 4WD drivetrain adds confidence on wet Washington roads, muddy job sites, or any off-road terrain where the AT4 trim was designed to shine. The AT4 package also brings a factory-fitted off-road suspension, skid plates, and aggressive all-terrain tires, so this truck is genuinely trail-capable — not just badge-dressed.

GMC Sierra 3500HD AT4 Features and Interior

AT4 Off-Road Package

The AT4 trim level is GMC's dedicated off-road-focused lineup, and it brings a meaningful suite of upgrades over base Sierra models. Expect features like a 2-inch factory suspension lift, Rancho monotube shocks, a MultiPro tailgate, and standard heated front seats and steering wheel. The interior reflects GMC's professional-grade philosophy — supportive seating, a large infotainment display with Apple CarPlay and Android Auto compatibility, and premium materials throughout the cabin that set it apart from strictly work-spec trucks.

Crew Cab Comfort and Utility

The crew cab configuration makes this truck genuinely livable for daily commuters and weekend adventurers alike. Rear passengers get generous legroom, and the fold-flat rear seat expands storage options when needed. The Sierra 3500HD's cabin is well-insulated from road and engine noise — a refinement you appreciate during long hauls from Pasco out to the Palouse or down through the Yakima Valley.

GMC Sierra 3500HD Reliability and Ownership

The Duramax diesel engine has earned a reputation among truck enthusiasts and fleet operators as one of the most durable powerplants in the segment. The 6.6L Duramax has undergone continuous development since its introduction, and the 2023 version benefits from decades of refinement. Owners consistently report low maintenance costs relative to mileage, strong resale value, and reliable performance under heavy towing and hauling conditions. The Allison-influenced 10-speed transmission (developed with GM) is known for smooth, durable shifts even under load. At 89,249 miles, a well-maintained Duramax-equipped Sierra 3500HD is genuinely in the early-middle chapter of its service life — not the end of it. As with any high-mileage diesel, reviewing maintenance records for oil changes, DEF fluid top-offs, and fuel filter services is always a smart move before purchase.

Why Buy From Prestige Motors Pasco in Pasco, WA

Prestige Motors Pasco, located in Pasco in Franklin County, Washington, has built a reputation in the Tri-Cities region for offering quality pre-owned vehicles backed by transparent, straightforward service. When you're investing in a heavy-duty truck like the Sierra 3500HD, buying from a dealer you can trust makes all the difference. The team at Prestige Motors Pasco understands that truck buyers in this region have real needs — agriculture, construction, recreation — and they're here to match the right vehicle to your situation without the pressure tactics. Stop in, ask your questions, and take this Sierra for a test drive that actually puts it through its paces.

Financing a Used GMC Sierra 3500HD Near Pasco

Financing a heavy-duty truck doesn't have to be complicated. Prestige Motors Pasco works with a network of lenders to find financing solutions for a wide range of credit situations — whether you have excellent credit, are rebuilding, or fall somewhere in between. First-time truck buyers and experienced fleet owners alike are welcome. The team can walk you through your options clearly, so you understand your terms before you sign anything. See the current price on this page and contact the dealership directly to get pre-qualified and find out what monthly structure works for your budget.

Frequently Asked Questions

Is the 2023 GMC Sierra 3500HD AT4 a good buy?

Yes — the 2023 Sierra 3500HD AT4 is widely regarded as one of the most capable and refined heavy-duty trucks on the market. The AT4 trim adds genuine off-road capability on top of the Sierra's already impressive work credentials, while the interior quality and technology put it ahead of many competitors in daily livability.

Is 89,000 miles too many for a Duramax diesel truck?

Not at all. The Duramax 6.6L V8 Turbodiesel is engineered for longevity far beyond typical gas engine expectations. Many Duramax-equipped trucks remain in active service past 300,000 miles. At 89,249 miles, this Sierra 3500HD is well within its working life — especially if service records confirm regular oil and fuel filter maintenance.

What does the AT4 trim include on the Sierra 3500HD?

The AT4 trim on the Sierra 3500HD includes a factory 2-inch suspension lift, Rancho monotube shocks, skid plates, all-terrain tires, heated front seats, heated steering wheel, the MultiPro tailgate, and a full suite of infotainment and driver-assist technology. It's GMC's off-road performance package paired with professional-grade interior refinement.

How much can a 2023 GMC Sierra 3500HD tow?

The 2023 GMC Sierra 3500HD with the Duramax diesel is rated to tow up to approximately 23,100 pounds when properly configured for conventional towing. Fifth-wheel and gooseneck ratings vary by configuration but are equally impressive. This makes it one of the highest-rated heavy-duty trucks in its class.

Can I get financing for a used truck with less-than-perfect credit in Pasco, WA?

Yes. Prestige Motors Pasco works with multiple lenders and welcomes buyers across the credit spectrum. Contact the dealership directly to discuss your situation and explore what financing options are available to you.

Serving Pasco and Surrounding Areas

Prestige Motors Pasco proudly serves buyers throughout Franklin County and the broader Tri-Cities region. If you're coming from Kennewick, Richland, West Richland, Benton City, or further out in Walla Walla County, this 2023 GMC Sierra 3500HD AT4 is worth the drive. Buyers from Connell, Kahlotus, and other communities across Franklin County regularly make the trip to Pasco for the selection and service Prestige Motors provides. The dealership is conveniently accessible from Highway 395 and Interstate 182, making it easy to reach from across the region.

Contact Prestige Motors Pasco Today

Ready to get behind the wheel of this 2023 GMC Sierra 3500HD AT4? Call Prestige Motors Pasco today at (509) 416-5700 to schedule a test drive, ask about vehicle history, or start your financing application. This is a high-demand truck at a competitive price — don't wait until it's gone. Visit us in Pasco, WA and let us show you why Franklin County truck buyers keep coming back to Prestige Motors Pasco. Stock #20228 — ask for it by number.