2025 GMC SIERRA 3500HD AT4 4WD CREW CAB <br /><br />CLEAN TITLE<br /><br />NEW 35" TOYO AT III TIRES<br />NEW FUEL ARC RIMS<br />HEATED AND VENTILATED FRONT SEATS<br />HEATED REAR SEATS<br />POWER DRIVER AND PASSENGER SEATS<br />DRIVER MEMORY SETTINGS<br />DUAL-ZONE AUTOMATIC CLIMATE CONTROL<br />ADAPTIVE CRUISE CONTROL<br />PREMIUM SOUND SYSTEM<br />HEAD-UP DISPLAY<br />360-DEGREE SURROUND-VIEW CAMERA<br />FRONT AND REAR PARKING ASSIST<br />AT4 PREMIUM PLUS PACKAGE<br />POWER RETRACTABLE RUNNING BOARDS<br />GOOSENECK AND 5TH-WHEEL PREP PACKAGE<br />X31 OFF-ROAD PACKAGE<br />6.6L DURAMAX TURBO-DIESEL V8 WITH 10-SPEED AUTOMATIC TRANSMISSION<br /><br />This Sierra 3500HD AT4 combines premium heated and ventilated comfort with advanced trailering technology and serious diesel capability. The AT4 Premium Plus Package, X31 Off-Road Package, power running boards, and fifth-wheel preparation make it exceptionally well equipped for demanding work and recreation.<br />Call or text to confirm availability and schedule an appointment. Mountain West Auto Group offers a wide selection of new and pre-owned vehicles, flexible financing options for qualified buyers, and trade-in opportunities to help make your next purchase simple. All advertised prices exclude tax, title, and registration. Equipment and features should be independently verified by the buyer prior to purchase. Mountain West Auto Group — Built for Your Adventure.