This one-owner 2025 GMC Sierra 1500 AT4 in Summit White is a premium, off-road-ready full-size pickup that combines rugged capability, luxurious comfort, and advanced technology in a clean, low-maintenance package. Powered by the EcoTec3 6.2L V8 engine paired with a smooth 10-speed automatic transmission and 4WD with AT4 off-road suspension, skid plates, hill descent control, and locking rear differential, it delivers 420 horsepower, 460 lb-ft of torque, and towing up to around 13,200 lbs while standing out with black chrome grille inserts, front fog lights, IntelliBeam high beams, rear step bumper, spray-on GMC bedliner, and bold Summit White finish. The upscale cabin features Jet Black with Kalahari accent leather seats with memory settings, power driver seat, heated front seats, Premium Bose 7-speaker audio, SiriusXM w/360L trial, navigation, remote start, and steering wheel controls, providing comfort, connectivity, and a driver-focused environment for passengers and cargo alike. This loaded AT4 combines GMCs durability, top-tier safety features, and off-road prowess in a versatile half-ton truck with heated leather comfort, premium tech, and the confidence of one-owner history, making it an exceptional choice for towing, trail adventures, daily driving, or any task that demands power, style, and go-anywhere capability.