This 2024 GMC Sierra 2500HD AT4 delivers premium capability with a striking black exterior and refined Jet Black leather interior accented in Kalahari. Powered by a Duramax 6.6L V8 Turbodiesel with 10-speed automatic transmission and 4WD, this crew cab truck combines rugged performance with sophisticated comfort. - Duramax 6.6L V8 Turbodiesel engine with 10-speed automatic - Premium Bose 7-speaker sound system with SiriusXM and GMC Infotainment - Heated and ventilated leather front seats with 10-way power adjusters - Advanced safety suite: adaptive cruise control, lane departure warning, automatic emergency braking - Integrated trailer brake controller with hitch guidance and multiple camera provisions - Off-road suspension with 2-speed transfer case and hill descent control - 20-inch gloss black aluminum wheels with spray-on bedliner Experience the AT4's off-road capability paired with premium technology and comfort features designed for the serious truck owner. Schedule your test drive today and discover what sets this Sierra apart.