**2021 GMC Sierra 2500HD SLT 4WD for Sale in St. Croix Falls, WI | 6.6L Duramax Diesel | Crew Cab | 5th Wheel Prep**

Discover heavy-duty diesel performance, premium comfort, and exceptional towing versatility in this **2021 GMC Sierra 2500HD SLT Crew Cab 4WD**, finished in Summit White. Available at **Johnson Motors of St. Croix Falls, Wisconsin**, this pre-owned GMC Sierra HD combines powerful Duramax capability, leather seating, advanced trailering equipment, and everyday convenience. An excellent choice for contractors, recreational towing, and drivers who demand a capable diesel pickup.

**6.6L DURAMAX TURBO-DIESEL & 4WD PERFORMANCE**

Powered by the legendary **6.6L Duramax Turbo-Diesel V8** paired with a heavy-duty **10-speed automatic transmission**, this GMC Sierra 2500HD delivers impressive torque and dependable performance for demanding workloads.

Its Four-Wheel Drive system, locking rear differential, traction control, and stability control provide added confidence on Wisconsin winter roads, challenging jobsites, and Midwest highways.

Heavy-duty equipment includes:
- Gooseneck/5th Wheel Package
- Factory 5th Wheel/Gooseneck Hitch Prep Platform
- Factory Trailering Package with tow hitch
- Engine block heater
- 220-amp alternator
- Heavy-duty Suspension Package
- Auxiliary transmission oil cooler
- Protective bed liner
- Tow hooks and integrated tailgate step

Whether hauling equipment, towing a camper, or managing everyday jobs, this Duramax diesel truck is equipped for serious work.

**SLT LEATHER INTERIOR & PREMIUM COMFORT**

Experience a spacious Crew Cab interior featuring upscale SLT appointments and convenient features designed for long drives and demanding workdays.

Comfort highlights include:
- Leather-appointed seating
- Heated front seats and heated steering wheel
- Power driver and passenger seats
- Adjustable lumbar support
- Driver seat and mirror memory
- Multi-zone automatic climate control
- Remote engine start
- Keyless entry and push-button start
- Heated power-folding mirrors
- Running boards
- Rear folding bench seat with storage
- Rear USB charging ports

The Medium Bed configuration provides practical cargo space, while the Crew Cab delivers generous room for passengers and workday essentials.

**GMC TECHNOLOGY & CONNECTIVITY**

Stay connected with modern technology designed to simplify daily driving and trailering.

Technology features include:
- Apple CarPlay and Android Auto compatibility
- Bluetooth® hands-free connectivity
- Rearview backup camera
- Wi-Fi hotspot capability
- SiriusXM satellite radio capability
- HD Radio and 6-speaker audio system
- Steering-wheel-mounted audio controls
- GMC Connected Access capability

The rearview camera helps with parking and trailer positioning, while smartphone integration provides convenient access to entertainment and communication.

**DRIVER ALERT PACKAGE I & SAFETY**

Equipped with the **Driver Alert Package I**, this GMC Sierra SLT includes:
- Blind Spot Monitoring
- Rear Cross-Traffic Alert
- Rear Parking Assist
- Electronic stability and traction control
- Four-wheel anti-lock disc brakes
- Advanced airbag protection

These technologies help enhance awareness when navigating parking areas, highways, and busy worksites.

**SHOP USED GMC SIERRA 2500HD DURAMAX DIESEL TRUCKS IN WISCONSIN!**

Searching for a **used GMC Sierra 2500HD diesel for sale near St. Croix Falls, WI**, a **Duramax 4x4 truck near Stillwater, MN**, or a heavy-duty pickup with fifth-wheel towing preparation? This 2021 GMC Sierra SLT offers the power, comfort, and utility truck buyers appreciate.

**Johnson Motors of St. Croix Falls** proudly serves customers from Osceola, Amery, Balsam Lake, Dresser, Som