2025 GMC Sierra 1500 Limited Features, Specs, Dimensions

2025 GMC Sierra 1500 Limited Features, Specs, Dimensions –  The AT4X gets a wicked cool stamped steel front bumper, while the fascia overall has a little more aggression than the ordinary Sierra. Compared to its Chevrolet Silverado sibling, the GMC gets less polarizing styling, giving it a broader, more upscale appeal. It’s a truck dressed in business casual attire, but it isn’t afraid to roll up its sleeves and get its hands dirty.

For buyers who plan on additional capability, the $7,995 AEV Edition package adds touches from overlanding outfitter American Expedition Vehicles. Extras include a stamped steel rear bumper with heavy-duty tow points, four more heavy-duty boron steel skid plates, rocker panel protection, gloss black door handles, unique 18-inch AEV-branded wheels with 33-inch mud terrain tires, as well as AEV branding on the headrests and all-weather floor liners, and AEV exterior badging.

2025 GMC Sierra 1500 Limited Redesign and Update Plan

Exterior and Interior

With unique springs accompanying Multimatic’s magnetorheological shocks, the Sierra AT4X has excellent suspension damping for both street and off-road situations. By comparison, the Denali Ultimate’s adaptive dampers can’t match the body control of this Canadian-made suspension over bumps and bruises on the road.

The AT4X rides relatively firmer in most situations; when driving on pothole-ridden roads, loose gravel, or washboard dirt surfaces, occupants can count on rock-solid stability and minimal commotion filtering through to the passenger cabin. In fairer weather, it loves eating up the miles – er, kilometres – as competently as any luxury car.

The interior is finished similarly to the Denali Ultimate, minus a few garnishing touches. Seating surfaces are full-grain leather with ventilation up front and with heating for outboard passengers in the rear. Long driving stints without fatigue are straightforward thanks to front seat massagers and the great ride quality. Kudos to General Motors (GM) for buttons that enable the front-seat heat to be isolated to the seatbacks, relieving soreness without toasted buns to go with it.

2025 GMC Sierra 1500 Limited Specs

Aside from its rugged good looks, the Sierra AT4X has a few more party tricks that make it more than just a pretty face. Proper electronic locking front and rear differentials are class-exclusive; not even the Ford F-150 Raptor or Ram 1500 TRX get them. There’s also a selectable terrain mode, which can modulate throttle and brake controls for precise one-pedal operation when crawling off-road.

Engine and Performance

There’s only one powertrain available with the Sierra AT4X package – a 6.2L V8 paired with a 10-speed automatic transmission. (Other trims get the option of a diesel, but that’s not the case here, unfortunately). With 420 hp and 460 lb-ft of torque, the AT4X merges and passes quickly and lets out a satisfying burble as it sweeps through the rev range. The transmission makes the most of the power on tap with a small amount of gear hunting and a bit of unrefined jerkiness at low speeds. For torque lovers who insist on diesel, the regular AT4 can be so equipped.

2025 GMC Sierra 1500 Limited Fuel Economy

While half-ton trucks aren’t noted for their fuel economy, those riding on mud-terrain tires will are notably worse due to increased rolling resistance. With Natural Resources Canada (NRCan) ratings of 16.7 L/100 km in the city and 14.0 on the highway, this test saw an observed 14.8 in mostly highway driving, including plenty of winter-time remote-start idling. To twist the knife a little more, premium fuel (91 octane or better) is recommended.

Thanks to cylinder deactivation, cruising at 80 to 90 km/h does net impressive highway mileage that can beat the rated figures. Still, much of this is negated once you hit triple-digit speeds. Against its peers, fuel economy is marginally worse than the turbocharged V6 of the Ford F-150 Raptor and is handily worse than the hybrid Toyota Tundra TRD Pro. However, it isn’t the worst in its class; that title goes to the much more powerful Ram 1500 TRX that gets 22.4 L/100 km in the city and 16.5 on the highway (yikes).  2025 GMC Sierra 1500 Limited Features

2025 GMC Sierra 1500 Limited Safety Features

On the safety front, several driver-assist features help to keep the Sierra AT4X between the lines. There’s adaptive cruise control, forward collision warning with automatic braking, front and rear pedestrian detection, including accommodation for trailers and rear cross-traffic alert, camera-based hitch guidance, a 360-degree camera system, a vibrating safety alert seat, and parking sensors on the front and rear bumpers. GM’s semi-autonomous Super Cruise system is not available on the AT4X and is reserved only for the Denali and Denali Ultimate.  2025 GMC Sierra 1500 Limited Features

For drivers with young children, the child seat anchors are reasonably easy to access. With the extra ride height and only a tubular steel rocker guard instead of a proper running board, loading rear-facing babies and toddlers can be awkward. A proper running board would solve this issue at the expense of some off-road ground clearance.

2025 GMC Sierra 1500 Limited Price and Release Date

The AT4X starts at $98,703, and with the AEV Edition package mixed in with a few other incidental options, the as-tested price balloons to $109,038 with destination fees and A/C tax. In addition to competing with the Denali Ultimate, the GMC finds itself right in the crosshairs of the renowned Ford F-150 Raptor, which gets more output (450 hp and 510 lb-ft of torque) and arguably more brand recognition. A comparably equipped Ram 1500 TRX is about $15,000 more, but 702 hp and 650 lb-ft greets you in return. Meanwhile, the Toyota Tundra CrewMax Limited TRD Pro is nearly $20,000 cheaper but isn’t as nice as a truck.  2025 GMC Sierra 1500 Limited Features