The 2025 GMC Sierra 3500HD Denali represents professional-grade capability with refined luxury, designed for those who demand both performance and premium comfort in their work truck.
- Duramax 6.6L V8 Turbodiesel engine with 10-speed automatic transmission and 4WD
- Bose Premium 7-Speaker Sound System with SiriusXM 360L trial subscription
- GMC Premium 13.4 diagonal information display with wireless phone projection
- Heated and ventilated leather front seats with 12-way power adjustments
- Spray-on pickup bedliner with GMC logo and 120-volt bed-mounted power outlet
- Signature Chrome Denali grille with LED cargo area and roof marker lighting
- HD Surround Vision with bed view camera and trailer camera provisions
- X31 Off-Road Package with 2-speed active transfer case and hill descent control
- Automatic emergency braking with forward collision alert and pedestrian braking
- Ultrasonic front and rear park assist with rear cross traffic alert
- Heated steering wheel and 20 ultra-bright machined alloy wheels
- Remote vehicle starter system with keyless open and start
- Rear step bumper with power sliding rear window and defogger
- Rain-sensing wipers and auto high-beam headlights
This Sierra 3500HD arrives finished in Black, presenting a commanding presence while maintaining the refined aesthetic of the Denali trim. The turbodiesel engine paired with the 10-speed automatic delivers the efficiency and torque expected from this platform, while the 4WD system ensures capability across diverse terrain and weather conditions. The pickup bed accommodates professional-grade work, supported by practical features like the spray-on bedliner and convenient 120-volt outlet for jobsite power needs.
Inside, the Denali cabin reflects genuine attention to comfort during long days on the road. Perforated leather seating, heated and ventilated front seats, and the heated steering wheel create an inviting environment, while the 12-way power adjustments ensure each driver finds their ideal position. The GMC Premium infotainment system with wireless phone projection keeps you connected, and the Bose audio system elevates every drive.
Safety technology is comprehensive. Automatic emergency braking, forward collision alert, and pedestrian braking provide active protection, while the HD Surround Vision system with bed view camera and trailer camera provisions enhances awareness during hitching and low-speed maneuvers. Lane departure warning, rear cross traffic alert, and ultrasonic park assist round out a thoughtful suite of driver assistance features.
The X31 Off-Road Package equips this Sierra for challenging conditions with the 2-speed active transfer case and hill descent control, making this truck capable both at the jobsite and on unprepared terrain. The off-road suspension and robust braking system provide the control you need when conditions demand it.
This 2025 Sierra 3500HD Denali is ready to work and ready to impress. Whether you require a truck that handles demanding tasks or prefer the confidence of modern capability, this vehicle delivers on both fronts.
** We do not accept outside financing **
** 2 YEARS COMPLIMENTARY MAINTENANCE INCLUDED WITH EVERY NEW AND USED VEHICLE PURCHASED AT SCHONER CHEVROLET **




