2025 GMC Sierra HD: PRO, SLE & SLT Trim Comparison

If you're eyeing the 2025 GMC Sierra HD lineup, you're probably after a truck that can haul, tow, and handle workdays without breaking a sweat. Whether you're stepping into your first heavy-duty pickup or upgrading to something more refined, the Sierra HD lineup offers three core trims, PRO, SLE, and SLT, each with its own blend of capability, comfort, and smart features. Let’s explore how each one stacks up.

PRO: Solid Power and Work-Ready Value

Starting at $63,969*, the Sierra HD PRO trim delivers everything you need in a no-nonsense workhorse. It comes equipped with a 6.6-litre V8 gas engine, paired with a 10-speed Allison® automatic transmission produces 401 horsepower and 464 lb-ft of torque, giving you the muscle and smooth shifting you want for daily towing duties. 

The PRO also includes trailering mirrors, a trailer brake controller, and a best-in-class HD cargo box volume, making it well-suited for hauling gear, tools, or even weekend toys. Inside, it features wireless Apple CarPlay® and Android Auto™, offering modern tech convenience even in its most rugged form. If you want a dependable pickup without all the bells and whistles, the PRO delivers on strength and functionality at an accessible price point.

SLE: Everyday Comfort Meets Towing Tech

Bumping up to the Sierra HD SLE, which starts at $73,505*, adds a bit more comfort and technology while keeping the hard-working foundation of the PRO. It includes all of the PRO’s standard features but upgrades your driving experience with a 13.4-inch centre touchscreen and a 12.3-inch digital Driver Information Centre, giving you a modern command centre right at your fingertips.

The SLE also introduces the Traction Select System with Tow/Haul mode, enhancing control when you're towing heavier loads. If you're planning to hitch up often, the available 13 camera views, including the popular transparent trailer view, offer a massive boost in visibility and confidence while backing up or merging.

You’ll also get a refined touch with 17-inch machined aluminum wheels and the option to add GMC’s MultiPro Tailgate with built-in Kicker® Audio, or go full off-road with the available X31 Off-Road Package featuring Rancho® shocks and skid plates. The SLE is a great middle ground for truck owners who need capability with a touch of creature comforts.

SLT: Premium Comfort Meets Hauling Confidence

At the top of this trim comparison is the Sierra HD SLT, priced from $89,398*. It takes all the features of the SLE and dials up the comfort and tech in a big way. Up front, you get 10-way power adjustable heated seats for both the driver and front passenger, as well as a heated steering wheel, perfect for those chilly mornings. The 6.6 L Turbo-Diesel V8 engine produces 470 horsepower and a monstrous 975 lb-ft of torque.

Towing is made even more seamless with the ProGrade® Trailering System, which includes an In-Vehicle Trailering App altogether pulling this truck’s max towing capacity to 36,000 lbs. You also get the versatile MultiPro Tailgate as standard, along with 18-inch machined aluminum wheels with stylish dark grey metallic accents.

Explore the 2025 GMC Sierra HD Lineup at Kia Yorkdale

Whether you're comparing trims or ready to get behind the wheel, McMillan Motor in Kipling, SK is here to help you find your perfect Sierra HD. Visit us today to explore our inventory, take a test drive, and experience the difference in power, comfort, and towing confidence that the 2025 Sierra HD lineup has to offer.

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