The 2021 GMC Sierra 1500 Base Regular Cab Long Box's towing capacity is rated at 4536 kg (10000 lbs) / 1034 kg (2280 lbs). The Sierra 1500 Base Regular Cab Long Box wheels measure 17-inch in diameter.

2021 GMC Sierra 1500 4WD Crew Cab AT4 Video Review: MotorTrend Buyer's Guide Since 1998 the Sierra has been GMC's bread and butter pickup. Is the Sierra the best full size truck on the market?

Prices shown for the used 2021 GMC Sierra 1500 Crew Cab AT4 4WD with NaN miles are what people paid to buy this vehicle or what people received when trading in this vehicle at a dealer. Edit options.

These days, GMC offers six vehicles with the AT4 package: three SUVs and three pickups, including the Canyon, Sierra 1500 ...

Jonny Lieberman reviews the 2021 GMC Canyon AT4 Crew Cab in this Buyer’s Guide, asking, does a midsize pickup provide all the utility you need?