Pre-Owned 2025 GMC Sierra 1500 AT4 For Sale Mukwonago, WI

SummaryDiscover this 1-owner clean Carfax 2025 GMC Sierra 1500 AT4 Crew Cab 4WD in Onyx Black at Lynch Buick GMC of West Bend. Equipped with the powerful 6.2L EcoTec3 V8, Technology Package with Head-Up Display & HD Surround Vision, AT4 Premium Package, Power Sunroof, Dual Active Exhaust, and Black Sport Steps. Off-road luxury built for Wisconsin roads.Vehicle DetailsDominate on and off the road with this **2025 GMC Sierra 1500 AT4 Crew Cab 4WD**, finished in commanding **Onyx Black** with matching **Body-Color Wheel Arch Moldings**. Powered by the ultimate half-ton powertrain—the legendary **6.2L EcoTec3 V8 engine** delivering 420 horsepower and 460 lb-ft of torque—paired with a smooth **10-speed automatic transmission**, an **Autotrac 2-speed transfer case**, and an aggressive **Dual Active Exhaust**.This premium off-road build is heavily optioned with the factory **Technology Package**, outfitting the truck with a multicolor 15-inch diagonal **Head-Up Display (HUD)**, **Rear Camera Mirror**, and multi-view **HD Surround Vision with Bed View**. Experience cabin comfort through the **AT4 Premium Package** and **AT4 Preferred Package**, featuring heated and ventilated front perforated leather bucket seats, a heated steering wheel, wireless charging, and a power sliding rear window, all crowned by an expansive **Power Sunroof**. Exterior ruggedness meets practical utility with factory **Black Sport Steps**, the 2-inch factory suspension lift with Rancho monotube shocks, red front recovery hooks, and GMC’s signature **MultiPro Tailgate**.---### Key Specifications & Highlighted Packages* **Vehicle:** 2025 GMC Sierra 1500 Crew Cab 147" AT4 4WD* **VIN:** `3GTUUEELXSG131800`* **Stock / Appraisal ID:** `APPRAISAL-242899711`* **Exterior Color:** Onyx Black* **Mileage:** 70,107 miles* **Drivetrain:** 6.2L EcoTec3 V8 Engine | 10-Speed Automatic | 4WD (2-Speed Autotrac Transfer Case | 3.23 Rear Axle Ratio)#### Factory Packages & Options* **Powertrain & Performance Upgrades:*** **6.2L EcoTec3 V8 Engine** (420 HP / 460 lb-ft torque)* **Dual Active Exhaust** with Sport Mode rumble* Heavy-Duty Air Filter, External Engine & Auxiliary Transmission Oil Coolers* 220-Amp Alternator & 730 Cold-Cranking Amp Heavy-Duty Battery* **Technology Package:*** 15-Inch Diagonal Multicolor Head-Up Display (HUD)* Rear Camera Mirror* HD Surround Vision with Trailer Camera Provisions & Bed View* Adaptive Cruise Control* **AT4 Premium Package & Preferred Package:*** Universal Home Remote / Garage Door Opener* Power Sliding Rear Window with Rear Defogger* Premium Bose Sound System with Richbass Woofer* Adaptive Cruise Control* **Comfort, Convenience & Exterior Upgrades:*** **Power Sunroof*** **Black Sport Steps** (Tubular Cab-Length)* **Body-Color Wheel Arch Moldings*** Factory 2-Inch Suspension Lift with Off-Road Monotube Rancho Shocks* Heated & Ventilated Front Seats, Heated Rear Outboard Seats, Heated Steering Wheel* GMC MultiPro Tailgate> `2025 GMC Sierra 1500 AT4`, `Sierra 1500 AT4 6.2 V8`, `used GMC Sierra AT4 West Bend WI`, `GMC Sierra 1500 Onyx Black`, `AT4 Technology Package Head Up Display`, `Sierra AT4 with 6.2L EcoTec3`, `AT4 Premium Package GMC`, `Sierra 1500 crew cab 4x4 off road`, `GMC Sierra power sunroof`, `Sierra 1500 dual active exhaust`, `used