Used 2023 GMC Sierra 1500 AT4

This 2023 GMC Sierra 1500 AT4 is built for drivers who want real off road ability without sacrificing everyday refinement. With its 3.0L Duramax diesel torque, factory lift, monotube shocks, and aggressive DuraTrac tires, this AT4 feels ready for weekends in the mountains, muddy forestry service roads near Port Alberni, and long highway runs from Nanaimo to Victoria.

Inside, you get modern tech, wireless projection, and a comfortable cabin designed for long days on Vancouver Island roads. If you need a truck that can work hard, play harder, and deliver dependable diesel efficiency, this AT4 fits perfectly into the Off Road Adventurer lifestyle.



Performance and Capability

3.0L Duramax Turbo Diesel with strong torque and efficiency
Ten speed automatic transmission with tow haul mode and paddle shifters
Two speed Autotrac transfer case with push button control
Integrated trailer brake controller
Trailer Side Blind Zone Alert and camera provisions
LT275 65R18 Goodyear Wrangler DuraTrac MT tires
Factory installed two inch lift with off road tuned monotube shocks
Full size steel spare and tire pressure monitoring with Tire Fill Alert



Design and Utility

Machined 18 inch aluminum wheels with Dark Grey accents
MultiPro tailgate with six functional access features
EZ Lift tailgate with power lock and hitch area lighting
Bed rail protection caps
Deep tint glass
Rain sensing front wipers
Power driver seat with ten way adjustability and lumbar
Rear wheelhouse liners
Sliding rear window with defogger



Technology and Comfort

Wireless Apple CarPlay and Android Auto
Wireless charging availability
Wi Fi hotspot capability
USB charge and data ports in the console plus rear charge ports
Remote vehicle start
LED signature lighting with fade on fade off animation
Theft deterrent system
Heated power mirrors
Premium interior layout designed for long range comfort

Island trails, muddy backroads, and rugged commutes meet their match in this AT4 Duramax.



Why Buy From Laird Wheaton GM

Your AT4 is supported by a dealership trusted across Vancouver Island and the Lower Mainland for transparent pricing, strong trade values, and a reputation built on long term customer care.

Proudly serving Nanaimo, Parksville, Courtenay, Victoria, Duncan, Campbell River, Port Alberni, and Qualicum Beach, along with mainland buyers from Vancouver, Surrey, Burnaby, Richmond, Coquitlam, and North Vancouver.