The 2020 GMC Sierra 1500HD represents the fourth generation of this full-size pickup truck. Providing five engine options and six trims, the Sierra 1500HD caters to different tastes and needs. Engine variants range from a 4.3L V6 yielding 285-hp to a 6.2L V8 pushing up 420-hp. There's also a 3.0L turbodiesel for efficiency-minded drivers. The truck pairs with a 6, 8, or 10-speed automatic transmission, on either a RWD or 4WD configuration. Inside, amenities include an available 8" infotainment screen, Apple CarPlay, Android Auto, and Wi-Fi hotspot. Key safety features encompass forward-collision warning, automatic emergency braking, and lane-keeping assist. The 2020 model introduced adaptive cruise control and a new 10-speed transmission for the 5.3L V8 engine models.