2021 GMC Sierra HD – Features, Specials, and Specs in Kansas City, MO

2021 GMC Sierra 1500 vs Sierra 2500

Both the 2021 GMC Sierra 1500 and 2021 GMC Sierra 2500 are equipped with segment-leading technologies. These full-size trucks are made for hard workers and rugged individuals who attack tough jobs head-on. To help you decide which truck is right for you, Reed Buick GMC in Kansas City, MO, crafted the following 2021 Sierra 1500 vs. 2021 Sierra 2500 comparison that is full of valuable information to help you in your search. Afterwards, browse through our inventory to see which models we have available.

For comparison’s sake, we will be reviewing the 2021 GMC Sierra 1500 SLE, starting at $43,095 MSRP, and the 2021 GMC Sierra 2500 SLE, starting at $49,895 MSRP. If you’d like to learn more about the Sierra 1500 or the Sierra 2500, check out our Sierra 1500 and Sierra 2500 pages as well as our Sierra 1500 inventory and our Sierra 2500 inventory. If you have any questions, contact us online or call (888) 210-8101.


The 2021 GMC Sierra 2500 is redesigned for superior performance and control, so you can get through your day knowing you’re driving a truck you can rely on. The 2021 GMC 1500 remains classic in reliability and power, with a powertrain you’re sure to love.

2021 GMC Sierra 1500

2021 GMC Sierra 1500 vs. 2021 GMC Sierra 2500
2.7L Turbo Engine 6.6L V8 Gas Engine
420 HP Horsepower 445 HP
460 lb.-ft. Torque 910 lb.-ft.
11,800 lbs. Max. Towing Capability 36,000 lbs.
2,250 lbs. Max. Payload Capacity 7,442 lbs.


Drive confidently with either the Sierra 1500 or the Sierra 2500. These models prioritize your safety with an array of features to keep you secure.

2021 GMC Sierra 1500 towing


Safety Features

2021 GMC Sierra 1500

  • HD rear vision camera
  • Available Adaptive Cruise Control
  • Available Front & Rear Park Assist
  • Forward Collision Alert
  • Six airbags
  • LED Daytime Running Lamps
  • Lane Change Alert with Side Blind Alert Zone
  • Teen driver technology

2021 GMC Sierra 2500

  • Six airbags
  • Front and rear park assist
  • Hitch guidance
  • Automatic Emergency Braking
  • LED daytime running lamps
  • Rear vision camera
  • Rear window defogger
  • Teen driver technology
  • Tire pressure monitoring system
  • Lane change alert with side blind zone alert


Feel the power of the advanced technologies offered by both the 2021 GMC Sierra 1500 and 2021 GMC Sierra 2500. These models offer differing features. Read the various amenities offered by each truck below.

2021 GMC Sierra 1500 Dashboard Screen


Technology Features

2021 GMC Sierra 1500

  • In-Vehicle Trailering App
  • Jackknife Alert
  • GMC Infotainment System with Navigation
  • Wireless Apple CarPlay® Compatibility

2021 GMC Sierra 2500

  • Bluetooth®
  • Tailgate with EZ lift and lower assist
  • 4G LTE Wi-Fi® hotspot capable
  • Remote keyless entry


Experience an interior that makes you feel at home when you’re on the job. The 2021 Sierra 1500 and 2021 Sierra 2500 have your comfort in mind.

2021 GMC Sierra 1500 Interior


Interior Features

2021 GMC Sierra 1500

  • Leather-wrapped steering wheel
  • Keyless Open & Start
  • SiriusXM® 3-Month All Access Trial Subscription
  • 6 Speaker Audio System

2021 GMC Sierra 2500

  • 60/40 split-folding rear bench seat
  • Assist handles
  • 3.5 -in. diagonal monochromatic driver information system
  • Inside rearview manual day/night mirror
  • Power door locks
  • Single-zone climate control