GMC Sierra 2026 Automatic Gasoline Specifications:- 5300 CC 8 Cylinder Engine 10-speed automatic transmission Drive system - Four-wheel drive Cruise control system Remote car unlock Engine start button Automatic door locks Power windows Steering wheel controls Power side mirrors Leather-wrapped steering wheel Side steps Automatic air conditioning Bluetooth Voice commands Apple CarPlay Android Auto Drive mode selection Radio 6 speakers Anti-theft system Tire pressure monitoring Anti-lock brakes Side airbags Stability control Traction control Brake assist technology Hill start assist system Driver and passenger airbags Driving modes (Standard - Sport - Snow) Fog lights Driver and passenger sun visors Driver and passenger seatbelt reminder Collision avoidance automatic braking Electronic brake force distribution Electric seat adjustment Velvet seats