Chevrolet Suburban

2026 CHEVROLET SUBURBAN HIGH COUNTRY 4WD — UNITED STATES SPECIFICATION

ENGINE AND DRIVETRAIN

The High Country is fitted with the 6.2-litre EcoTec3 V8, GM engine code L87 — a naturally aspirated, overhead-valve, all-aluminium 90-degree V8 of 6,162 cc with direct injection, variable valve timing and Dynamic Fuel Management cylinder deactivation. Bore and stroke are 103.25 x 92 mm and the compression ratio is 11.5:1. SAE-certified output is 420 hp (313 kW) at 5,600 rpm and 623 Nm (460 lb-ft) at 4,100 rpm. Drive passes through a Hydra-Matic 10L80 10-speed automatic on a 3.23 final drive to a two-speed automatic transfer case offering 2WD, Auto, 4High and 4Low ranges; the selected range is displayed in the instrument cluster. Premium 91 AKI petrol is RECOMMENDED but not required — the owner's manual states 87 octane may be used with reduced performance and driveability. E85 and other flex-fuel blends are expressly prohibited. The vehicle was built at the GM Arlington, Texas assembly plant.

CHASSIS, STEERING AND BRAKES

Body-on-frame construction. The front suspension is independent, coil-over-shock with a stabiliser bar; the rear is independent multi-link, also coil-over-shock with a stabiliser bar. Four-corner air ride control and Magnetic Ride Control are available on this chassis. Steering is electric power-assisted rack-and-pinion at a 15.9:1 ratio. Braking is four-wheel disc with ABS, using vented Duralife rotors front and rear — 343 x 30.4 mm at the front and 345 x 25.4 mm at the rear — supported by electronic stability control, traction control, brake assist and dynamic brake support, all confirmed standard on this vehicle by its NHTSA build record. Direct-reading tyre pressure monitoring is fitted. High Country carries 22-inch aluminium wheels as standard on 275/50R22 111H tyres, with 24-inch wheels on 285/40R24 112H available.

DIMENSIONS AND CAPACITIES

The Suburban measures 5,748 mm long and 2,377 mm wide across the mirrors; GM does not publish a width excluding mirrors. Published height spans 1,920-1,946 mm across the lineup and GM gives no per-trim figure, so the exact height of an air-ride High Country should be measured before it is used for freight cubing. Kerb weight for the 4WD 6.2-litre configuration is 2,745 kg (6,051 lb) and maximum payload is 731 kg (1,612 lb). The fuel tank holds 106 litres (28.0 US gallons). Cargo volume is 1,175 litres (41.5 cu ft) behind the third row, 2,656 litres (93.8 cu ft) behind the second row and 4,092 litres (144.5 cu ft) behind the first row with both rear rows folded. GM does not publish a gross vehicle weight rating for this model in any of its consumer, trailering or service literature, deferring instead to the door-jamb label; NHTSA certifies the vehicle in GVWR Class 2F, 3,175-3,629 kg (7,001-8,000 lb).

EXTERIOR

Finished in Black. LED headlamps with IntelliBeam automatic high-beam switching and LED daytime running lamps; LED tail lamps; roof rails; power-folding, heated exterior mirrors; a hands-free programmable power liftgate; quad exhaust outlets integrated into the rear valance; front tow hooks and an integrated trailer hitch. High Country badging appears on the front fenders and the model script on the tailgate.

INTERIOR AND SEATING

Seven seats in three rows: two power-adjustable front seats, two second-row captain's chairs separated by an open walk-through, and a three-place third-row bench. Seating surfaces are leather-appointed in Black. The front seats are heated and ventilated, the steering wheel is leather-wrapped and heated, and driver memory recalls seat and mirror positions. Climate control is multi-zone with a dedicated rear control panel on the console. A wireless device charging tray is fitted in the centre console.

INFOTAINMENT AND CONNECTIVITY

A 17.7-inch diagonal freeform centre display runs Google built-in, giving native Google Assistant, Google Maps and Play Store access alongside Apple CarPlay and Android Auto projection. The instrument cluster is a reconfigurable digital display. A rear-seat entertainment system with two independent screens and dual HDMI inputs is fitted. Bluetooth, multiple USB ports, built-in navigation, a Wi-Fi hotspot and an integrated trailering application are present on the system's home screen.

DRIVER ASSISTANCE AND SAFETY

Standard on this vehicle per its NHTSA build record: automatic emergency braking, front pedestrian automatic emergency braking, rear automatic emergency braking, forward collision warning, lane departure warning, lane keep assist, lane centering assistance, blind spot monitoring with blind spot intervention, rear cross traffic alert, park assist and an HD rear vision camera. A surround-vision camera system with overhead, side and hitch-guidance views is fitted. Restraints comprise driver and front-passenger frontal airbags, first-row seat-mounted side-impact airbags and head-curtain airbags covering all three seating rows, with active manual front seat belts. NHTSA rates the 2026 Suburban 5 stars overall, with 5 stars frontal, 5 stars side and 3 stars rollover at a 21.9% rollover probability. The IIHS has never crash-tested any Suburban; its Tahoe result does not transfer to this model.

TOWING AND CAPABILITY

Maximum trailer weight for the 4WD 6.2-litre Suburban is 3,311 kg (7,300 lb) as standard, rising to 3,538 kg (7,800 lb) with the Max Trailering Package, against a gross combined weight rating of 6,350 kg and 6,577 kg respectively. Whether this unit carries the Max Trailering Package has not been confirmed, so the standard rating should be quoted unless the build sheet says otherwise. The two-speed transfer case with a low range, the integrated trailer hitch, the trailering application in the infotainment system and the hitch-guidance camera view are all fitted.

FUEL ECONOMY

EPA ratings for the 2026 Suburban 4WD 6.2-litre are 14 mpg city, 18 mpg highway and 16 mpg combined (US gallons), on premium petrol. These are US test-cycle figures and are not comparable with WLTP or NEDC consumption quoted in export markets. No CO2 homologation figure is published for this vehicle.