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2025 GMC Sierra

Pro 4WD

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What the Pro adds over the Pro

Spec	Pro	Pro
Curb weight (maximum)	4500 lbs	4750 lbs
Curb weight (minimum)	4410 lbs	4630 lbs
Ground clearance	7.9 in	8.1 in
Gross vehicle weight rating	6800 lbs	6900 lbs
MPG (city)	19 mpg	18 mpg
MPG (highway)	22 mpg	21 mpg
Overall height	75.7 in	75.8 in
Overall length	210.9 in	229.7 in
Payload capacity	2260 lbs	2120 lbs
Wheelbase	126.5 in	139.5 in

Specifications

Source: manufacturer press kit

Brakes

Front brake diameter	330 mm
Front brake type	Vented disc
Rear brake diameter	345 mm
Rear brake type	Vented disc

Dimensions Exterior

Ground clearance	8.1 in
Overall height	75.8 in
Overall length	229.7 in
Overall width	81.1 in
Wheelbase	139.5 in

Engine Basics

Aspiration	twin turbo
Cylinder count	4
Engine displacement	2700 cc
Fuel injection system	gdi mpi
Engine type (full description)	2.7L Turbo DOHC VVT DI with Active Fuel Management
Valve configuration	Dual-overhead camshafts, four-valves per cylinder

Engine Output

Horsepower	310 hp
Torque	430 lb-ft

Fuel Economy

MPG (city)	18 mpg
MPG (highway)	21 mpg

Fuel System

Fuel tank capacity

28.3 gal

Headroom

Front headroom

43.1 in

Legroom

Front legroom

44.5 in

Shoulder Room

Front shoulder room

66 in

Steering

Steering type

Electric power-assisted rack-and-pinion

Suspension

Front suspension type	Independent coil-over-shock with twin-tube shock absorbers
Rear suspension type	Solid axle with semi-elliptic, variable-rate, two-stage multileaf springs, splayed twin-tube shock absorbers

Tires

Tire size

P255/70R17

Transmission

Final drive ratio	3.4
Transmission speeds	8
Transmission type	automatic

Weights

Curb weight (maximum)	4750 lbs
Curb weight (minimum)	4630 lbs
Gross vehicle weight rating	6900 lbs
Payload capacity	2120 lbs

Wheels

Wheel diameter	17 in
Wheel material	steel
Wheel width	8 in

Standard & optional equipment

Source: manufacturer press kit

Safety2 std · 0 opt

Cruise Control (standard on Pro trim)
Four-wheel disc with electro-hydraulic power assist and ABS

Powertrain4 std · 2 opt

10-speed automatic transmission (3.0L, 5.3L and 6.2L)
2.7L Turbo DOHC VVT DI with Active Fuel Management – 310 hp / 430 lb.-ft. torque
5.3L V-8 VVT DI with Dynamic Fuel Management – 355 hp / 383 lb.-ft. torque
8-speed automatic transmission (2.7L)
3.0L DOHC I-6 Turbo-Diesel – 305 hp / 495 lb.-ft. torque optional
Two-speed transfer case or Autotrac automatic transfer case with 4WD (depending on model) optional

Chassis4 std · 0 opt

Electric power-assisted rack-and-pinion steering
Independent coil-over-shock front suspension with twin-tube shock absorbers; Rancho shocks on AT4; Multimatic DSSV dampers on AT4X; Adaptive Ride Control available on Denali
Solid axle rear suspension with semi-elliptic, variable-rate, two-stage multileaf springs, splayed twin-tube shock absorbers; Rancho shocks on AT4; Multimatic DSSV dampers on AT4X; Adaptive Ride Control available on Denali
Vented front and rear Duralife™ brake rotors (13 x 1.18 in. front / 13.6 x 0.79 in. rear)

Ranked by what shoppers ask about first; standard equipment before options.

Transcribed from the manufacturer's official press kit for the 2025 Sierra. Confirm with the window sticker for a specific unit.

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Common questions about the Pro

Source: EPA, NHTSA and manufacturer press kits

What does the 2025 GMC Sierra Pro add over the Pro?

Against the Pro, 10 published specifications differ. Both lists are on this page, taken from the manufacturer's own press material.