2025 GMC SIERRA 3500HD AT4<br /><br />CLEAN TITLE<br /><br />HEATED & COOLED FRONT SEATS<br />HEATED REAR SEATS<br />POWER RETRACTABLE RUNNING BOARDS<br />HEADS-UP DISPLAY<br />AERIAL VIEW DISPLAY SYSTEM<br /><br />X31 OFF-ROAD PACKAGE<br />GOOSENECK / 5TH WHEEL PREP PACKAGE<br />6.6L V8 DIESEL TURBOCHARGED ENGINE<br />10-SPEED AUTOMATIC TRANSMISSION<br />FOUR-WHEEL DRIVE<br />LOCKING / LIMITED SLIP DIFFERENTIAL<br />PROGRADE TRAILERING SYSTEM W/ HITCH GUIDANCE<br /><br />This Sierra 3500HD AT4 is built for serious heavy-duty work with Duramax diesel power, gooseneck/5th wheel prep, advanced trailering tech, and premium AT4 comfort features inside.<br /><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.