2025 GMC Sierra 1500 AT4X Diesel Short Bed: The Brand’s Off-Road Full Size Truck with a Standard Factory Lift

Highlight: The AT4X is outfitted with a factory-built 2-inch lift.

Test Vehicle’s MSRP: $87,935 (Base Pro Trim MSRP): $49,495

Seating Capacity: 5 passengers

Standard Safety Features (AT4X): airbags; ABS; a backup camera; a blind spot collision avoidance assist; rear cross traffic avoidance; a lane keep assist system; a lane following assist system; a high beam assist; a forward collision assist system; a vehicle stability system with trailer front sway; a tire pressure monitoring system; a hill start assist; a hill start assist system; automatic emergency braking; forward collision braking; lane keep assist with lane departure warning; trailer side blind zone alert; rear cross traffic braking; and a tire pressure monitoring system

Standard Equipment (AT4X): 20-inch aluminum wheels; a 10-speed automatic transmission; front and rear electronic licking differential; multi-matic DSSV dampers; stamped steel front bumper with front winch capability and stamped baron steel front approach skid plates; 16-way power heated/ventilated front seats with massage features; heated rear seats; 2-inch factory lift with off-road suspension and Rancho monotube shocks; two-speed transfer case and underbody skid plates; leather seating surfaces; a 13-inch infotainment screen; Google Built-in; a heads up display system; keyless entry; remote start; a radar activated cruise control system; a power sunroof; a dual zone climate control system; heated leather wrapped steering wheel; spray-in bedliner; 120-v bed power outlet; LED cargo area lighting; spray on bedliner; a multi-tailgate; and power folding heated mirrors

Options: AEV Edition: AEV front chassis skid plate; transfer case skid plate; stamped steel rear bumper; AEV stamped steel rear bumper; 18-inch black aluminum wheels; rear differential skid plates; rocker protection; branded floor liners; fuel tank skid plate; branded front head restraints and tailgate decal; and Volcanic red tintcoat exterior

Other Trim Levels:

SLE

Elevation

SLT

AT4

Denali

Standard Audio On Test Vehicle: a 12-speaker Bose audio system with AM/FM/HD/SiriusXM

Android/Apple CarPlay: N/A

Bluetooth Connectivity: Standard

USB Connectivity: Standard

Bumper-to-Bumper Warranty: 3 years or 36,000 miles

Powertrain Warranty: 10 years or 100,000 miles

Standard Engine/Horsepower (Test Vehicle): 3.0-liter turbo diesel, 6-cylinder /305-hp

Recommended Fuel: Diesel

Standard Fuel Mileage: 19-city/20-hwy (test model)

Towing: 8,900 lbs (test model)

What’s New: The AT4X is generally a carryover truck for the 2025 model with no new updates.

Why:

A powerful turbo diesel is standard on the AT4 and AT4X trims

Capable of towing up to 8,900 lbs

A 6.2-liter V8 gasoline engine is available

A stylish truck

Equipped with a 2-inch factory lift designed for off-roading

Multi operational tailgate

Power sunroof

Leather seating

Roomy cabin with seating for five

Rear split seats which folds upward for additional storage

A hidden storage compartment in the rear seating

Google built-in

Easy-to-use infotainment system

A heads-up display (HUD) system

A radar-activated cruise control system

Remote start

A keyless entry

Ventilated/Heated front seats

Rear heated seats

Spray-in bedliner

Heated steering wheel

Power folding mirrors

A short or regular cargo bed available

But:

An expensive truck

Hands-free steering not available on test truck

A lot of vehicle to drive (on the streets)

Apple CarPlay not available

Firm seats (as in the case of most GM vehicles)

Verdict: The fullsize diesel powered GMC Sierra 1500 AT4X is outfitted with a factory installed 2-inch lift. The massive truck with a near 9,000 towing capacity has the ability to move around five occupants in style.

In addition to being a workhorse, the GMC Sierra 1500 AT4X can be accessorized with the latest high-tech features and luxury accoutrements. Some of those features ranges from a user-friendly touchscreen infotainment system to a HUD (heads of display system) to leather front ventilated/heated massaging seats and rear heated seats.

Basically, GMC has turned their premium trucks, with roomy cabs, to off-roading powerhouses. It's no wonder why trucks have become the new flagship vehicles displacing cars - which traditionally held the title.