GMC Sierra HD

Sierra heavy-duties are offered in a range of 2500HD (3/4 ton) and 3500HD (1 ton) models and are available in WT, SLE and SLT trim.

• Three cab styles, three cargo box styles and five wheelbase lengths
• 18,500-lb. gross combined vehicle weight rating for vehicles with a gas V-8
• 13,000-lb. conventional trailer weight rating enabled by a larger-capacity trailer hitch platform
• 16,700-lb. maximum towing capacity when equipped with a fifth-wheel hitch
• Power-adjustable driver's seat available on regular cab models with a bench seat
• Dually models receive larger 17-in. wheels