Used 2025 Gmc Sierra 1500 AT4

This 2025 GMC Sierra 1500 AT4 4WD in Thunderstorm Gray delivers exactly what serious truck buyers want naturally aspirated V8 power, true off-road capability, and premium interior comfort. Powered by the legendary EcoTec3 6.2L V8 paired with a 10-Speed Automatic transmission, this Sierra hits hard off the line, tows with confidence, and handles daily driving with ease. With the odometer 3,227 miles BELOW market average, this AT4 stands out in Lancaster County, Central Pennsylvania, Harrisburg, York, Reading, and the Mid-Atlantic region. This is not a chrome truck. This is AT4 built to move. This Sierra AT4 blends big V8 power, factory off-road hardware, and premium comfort without stepping into AT4X pricing. Ideal for buyers who want a daily driver that still delivers when the road ends. This Sierra AT4 stands out in Lancaster County, Central Pennsylvania, Harrisburg, York, Reading, and the Mid-Atlantic region.