For drivers who need the capability of a heavy-duty pickup without giving up comfort, technology or off-road performance, the 2025 GMC Sierra 2500HD 4×4 Crew Cab AT4 delivers an impressive combination.
Available at Red Deer Motors in Red Deer, Alberta, the Sierra 2500HD AT4 is designed for demanding work during the week while still offering the equipment and refinement needed for long highway trips, towing and weekends away from the pavement.
Heavy-Duty V8 Power
The 2025 Sierra 2500HD offers two serious heavy-duty powertrains.
The standard 6.6-litre gasoline V8 produces 401 horsepower and 464 lb-ft of torque, while the available 6.6-litre Duramax turbo-diesel V8 produces an impressive 470 horsepower and 975 lb-ft of torque. Both are paired with an Allison 10-speed automatic transmission.
For buyers towing heavier trailers regularly, the Duramax is particularly appealing thanks to its massive torque output, integrated exhaust brake and proven heavy-duty design.
Impressive Towing Capability
A Sierra HD needs to work, and the 2500HD AT4 delivers serious numbers.
When properly configured, the 2025 Sierra 2500HD AT4 can tow up to approximately 18,500 pounds with a conventional trailer and up to 21,190 pounds using a gooseneck or fifth-wheel setup. Actual capacity varies based on powertrain, equipment, axle ratios and vehicle configuration.
That capability makes the Sierra 2500HD well suited to RVs, equipment trailers, enclosed car haulers and many of the larger recreational trailers commonly seen throughout Alberta.
AT4 Off-Road Equipment
The AT4 package gives the Sierra HD a more rugged personality than a conventional luxury-oriented heavy-duty truck.
GMC equips the AT4 with an off-road suspension featuring Rancho twin-tube shocks, skid plates and Hill Descent Control, helping provide additional confidence on rough roads, worksites and trails.
Its 4×4 Crew Cab configuration also makes it an excellent fit for Central Alberta conditions where snow, gravel roads, muddy worksites and rapidly changing weather are part of everyday driving.
Premium Interior and Modern Technology
Step inside and the Sierra 2500HD AT4 combines heavy-duty durability with the upscale environment expected from a modern GMC.
The spacious Crew Cab provides generous room for both front and rear passengers, making it comfortable for work crews, families or long-distance travel. Depending on equipment, the Sierra HD can also offer advanced towing technology and up to 14 available camera views, helping drivers see around the truck and trailer while manoeuvring in tight areas.
That combination of capability and technology is one of the reasons today’s Sierra HD can serve equally well as a work truck, tow vehicle or everyday premium pickup.
Built for Alberta Truck Owners
The Sierra 2500HD AT4 feels especially at home in Alberta. Whether you’re pulling an RV through the Rockies, hauling equipment across Central Alberta, heading down a gravel lease road or simply dealing with a January snowstorm, this is a truck built to handle demanding conditions.
At the same time, its AT4 styling, comfortable Crew Cab and modern technology make it much easier to live with every day than heavy-duty pickups from previous generations.
Find the 2025 GMC Sierra 2500HD AT4 at Red Deer Motors
If you’re searching for a 2025 GMC Sierra 2500HD AT4 for sale in Red Deer, come take a closer look at this heavy-duty GMC at Red Deer Motors.
With impressive towing capability, available Duramax diesel power, true 4×4 capability and the rugged AT4 package, the Sierra 2500HD offers the versatility Alberta truck buyers demand.
Visit www.reddeermotors.com to view our current inventory or contact Red Deer Motors today to arrange a test drive.