The 2025 Suburban comes in six trims – LS, LT, RST, Z71, Premier, and High Country – with three engine choices available. The standard engine for LS, LT, RST, Z71, and Premier trims is a 5.3-liter V-8 that puts out 355 horsepower and 383 lb.-ft. of torque. A more powerful 6.2-liter V-8, generating 420 horsepower and 460 lb.-ft. of torque, is standard on the High Country and available on the RST, Z71, and Premier. New for 2025 is a refined, second-generation 3.0-liter inline-six turbo-diesel Duramax engine, making 305 horsepower and 495 lb.-ft. of torque, which is respectively 10% and 7.6% more than last year’s Duramax. This new diesel is optional for the first time on all trims, including the Z71, and will be available later in 2025.
All engines are paired with a ten-speed automatic transmission. When it’s properly equipped, the 2025 Suburban offers a maximum towing capacity of 8,200 pounds. Gasoline fuel economy ranges from 14 to 15 mpg in the city and 18 to 20 mpg on the highway, depending on the powertrain. The EPA hasn’t yet released its official ratings for the Duramax diesel.
The well-equipped Suburban LS offers seating for eight (front bucket seats) or nine (front row split-bench seat), tri-zone automatic climate control, fabric upholstery, an eight-way power driver’s seat, a six-way power front passenger seat, and rear air conditioning. This trim also comes with remote start, proximity keyless entry, push-button ignition, LED exterior lighting, a manual tilt-and-telescopic steering column, sound-reducing glass, rain-sensing intermittent front and rear wipers, assist steps, roof-mounted side rails, rear privacy glass, heated power side mirrors, an 11-inch digital driver information display, a rear camera washer, six USB ports, two 120-volt outlets, and 18-inch aluminum wheels. The eight-passenger LT adds upscale touches, like leather upholstery, heated front seats, a power liftgate, a driver’s memory system, an eight-way power front passenger seat, and wireless device charging.
The RST takes on a more athletic appearance thanks to black exterior treatments, perforated leather seating surfaces, and 22-inch aluminum wheels. It also has LED fog lamps, unique interior accents, and an auto-dimming rearview mirror. The Z71 is ready to tackle trails and off-road adventures with a two-speed transfer case, hill descent control, front and rear skid plates, a heavy-duty air filter, unique exterior treatments, a front fascia with a high-approach angle, front red recovery hooks, 20-inch wheels with all-terrain tires.
The Suburban takes on a luxury persona with the Premier trim. This upscale edition boasts a heated steering wheel, heated and ventilated front seats with power lumbar controls, heated second-row outboard seats with power functions, a power-folding third-row bench seat, Magnetic Ride Control, unique exterior treatments, heated power side mirrors (power-folding and auto-dimming), a power tilt-and-telescopic steering column, upgraded exterior lighting, and a power-sliding center console. The High Country goes one step further with unique interior trim with authentic wood accents, a head-up display, a rear camera mirror, and 22-inch wheels. Buyers looking for a more unique presence can opt for 24-inch wheels on the RST and High Country.
All 2025 Suburbans come standard with Chevy Safety Assist, a suite of advanced safety features including enhanced automatic emergency braking, forward collision alert, lane keep assist with lane departure warning, front pedestrian and bicyclist braking, and automatic high beams. Additional standard safety features include enhanced automatic parking assist, a surround-view monitor, Safety Alert Seat, and Teen Driver.
Chevrolet has also added new trailering technologies to the 2025 Suburban. These include Trailer Tire Health, which helps prevent trailer tire blowouts, Mobile Trailering App Load Rating Info (to access the vehicle’s load rating), and Forward Path Indication to assist with trailer navigation. Super Cruise, GM’s hands-free driver assistance technology, is available on all trims except the LS and Z71. This system allows hands-free driving on more than 400,000 miles of compatible roads in the U.S. and Canada.
The centerpiece of the 2025 Suburban’s interior is the all-new standard 17.7-inch-diagonal freeform infotainment screen. This system is based on Google built-in with popular apps like Google Maps and Google Assistant, wireless Android Auto and Apple CarPlay, Bluetooth, and SiriusXM satellite radio. All trims are set up for subscription-based 5G Wi-Fi hotspot capability and access to OnStar/Chevrolet connected services. A six-speaker audio system is standard in most trims, while a ten-speaker Bose arrangement is included with the Premier and High Country and optional on all lower grades except the LS.