2021 GMC Sierra 1500 at Budds’ Chev in Oakville, ON

Rugged and capable, the 2021 GMC Sierra is a light-duty pickup truck with a heavy-duty work ethic—alongside a laundry list of best-in-class, first-in-class, and segment-firsts to its name—making it as tough a truck as you’ll find on the road. Explore this powerful pickup with your home for all things Chevrolet, Cadillac, Buick, and GMC in Oakville, Ontario: Budds’ Chev.


The strong, angular C-shaped LED headlamps found on the 2021 GMC Sierra 1500 perfectly complement its rugged exterior and muscular hood (along with the power found underneath). A wide, athletic stance offers up serious attitude, while best-in-class crew cab front head and leg room ensures that the Sierra’s interior offers up just as much comfort. However, truck drivers are after one thing—utility—and this GMC pickup offers it in spades thanks to the available, world’s first Six-Function MultiPro Tailgate and a cargo bed with class-leading cargo volume. The industry first carbon-fiber composite bed is another option you won’t want to miss out on, while the SLT trim and up all feature premium, leather-appointed heated front seats. Rounding out the Sierra 1500’s impressive utility is the available 15” diagonal Head-Up Display, and first-in-class Rear Camera Mirror.

Sierra 1500 Design

Exterior DimensionsSierra 1500 Denali (Crew Cab, Short Box)Sierra 1500 Denali (Crew Cab, Standard Box)
Length (mm/in)5,886 / 231.7 6,128 / 241.3
Width (without mirrors) (mm/in)2,063 / 81.22,063 / 81.2
Height (mm/in)1,918 / 75.5 1,915 / 75.4
Wheelbase (mm/in)3,745 / 147.4 3,987 / 157.0
Cargo Box Length (on floor) (mm/in)1,776 / 69.92,018 / 79.4
Cargo Box Width (on floor) (mm/in)1,814 / 71.41,814 / 71.4
Tailgate Width (mm/in)1,814 / 71.41,814 / 71.4
Ground Clearance (mm/in)205 / 8.1205 / 8.1
Cargo Volume (L)1,7812,030
Curb Weight (kg/lbs)2,184 / 4,8152,208 / 4,867
Interior DimensionsSierra 1500 Denali Crew Cab
Front Headroom (mm/in)1,093 / 43.0
Rear Headroom (mm/in)1,019 / 40.1
Front Legroom (mm/in)1,131 / 44.5
Rear Legroom (mm/in)1,102 / 43.4
Front Shoulder Room (mm/in)1,677 / 66.0
Rear Shoulder Room (mm/in)1,655 / 65.2
Front Hip Room (mm/in)1,554 / 61.2
Rear Hip Room (mm/in)1,530 / 60.2
Passenger Capacity5


The 2021 GMC Sierra 1500 is built to handle anything you throw its way, with a range of engine options providing this pickup with some serious strength. Starting with the base 4.3L EcoTec3 gas V6 paired to a 6-speed automatic, good for 285 horsepower and 305 lb-ft of torque, all the way up to the 420 horsepower, 460 lb-ft of torque 6.2L EcoTec3 V8. In between you’ll find a 2.7L Turbo engine and a 5.3L EcoTec3 V8, both offering a blend of exceptional power and fuel efficiency. With the option of either an 8- or 10-speed automatic transmission, not to mention the advanced Active Fuel Management system, the lineup of gas engines available for the Sierra offer up something for every need. Of course, the 2021 Sierra 1500 comes with a diesel option as well, for the heavy haulers in the crowd; with 277 horsepower and 460 lb-ft of torque, the 3.0L Duramax® Turbo Diesel engine provides plenty of muscle as well as best-in-class light duty diesel horsepower.

2021 GMC Sierra 1500 Performance

Specifications 4.3L Gas V6 2.7L Turbo 5.3L EcoTec3 V86.2L EcoTec3 V8 Duramax 3.0L Turbo-Diesel
Transmission 6-speed automatic8-speed automatic10-speed, 8-speed, 6-speed automatic available10-speed automatic10-speed automatic
Horsepower285310 355420277
Torque (lb-ft)305 348 383 460460
Fuel Efficiency (highway) (L/100 km) (2WD) 15.1 / 11.5 11.9 / 10.314.0 / 10.1, 15.8 / 11.4 --10.2 / 7.8
Fuel Efficiency (highway) (L/100 km) (4WD) 15.8 / 11.9 13.0 / 11.4, 13.3 / 11.814.3 / 10.7, 14.7 / 11.2, 16.0 / 11.815.1 / 11.5, 15.7 / 12.410.6 / 9.2

GMC Sierra 1500 Model Changes

The 2020 GMC Sierra 1500 is plenty of truck, but the 2021 version goes above and beyond with a number of upgrades in the driver assistance department—making it both powerful and smart. A range of trailer-assistance features like the brand new jack-knife alert help to make towing incredibly simple, whether you’re a rookie or a seasoned pro. The new MultiPro Tailgate provides even more utility to a truck already brimming with it, while a host of new paint options allow you to indulge in designing a truck that both looks the part and performs it, too.

2021 GMC Sierra 1500 Trim Levels

GMC Sierra 1500 SLE, SLT, & Elevation

Starting at $32,598
  • Best-in-class crew cab front head and legroom (max)
  • LED C-shape signature headlamps
  • Available ProGrade™ Trailering System w/ in-vehicle Trailering App
  • Premium heated, leather-appointed front outboard seating (SLT)
Build & Price a GMC Sierra 1500

GMC Sierra 1500 Sierra AT4

Starting at $63,198
  • 2-inch factory-installed suspension lift
  • Standard six-function MultiPro™ Tailgate
  • Exclusive interior
  • Black chrome accents
Build & Price a GMC Sierra 1500

GMC Sierra 1500 Denali

Starting at $69,398
  • Standard six-function MultiPro™ Tailgate
  • Continuous damping Adaptive Ride Control
  • Available first-in-class 15-in. diagonal Head-Up Display & Rear Camera Mirror
  • Available CarbonPro Edition w/ carbon fibre bed
Build & Price a GMC Sierra 1500

For a light-duty truck, the 2021 GMC Sierra 1500 isn’t remotely light on features or capability. Add in best-in-class performance, along with a number of class-first and segment-first features, and you’ve got a workhorse truck that doesn’t concede on the job or when it comes to the competition. To learn more about the 2021 GMC Sierra, let the team at Oakville’s Budds’ Chev show you just how capable this truck really is. Beyond the Sierra, we offer a huge range of new and pre-owned vehicles, vehicle servicing, parts, financing, and more, making Budds’ Chev the premier destination for all things Chevrolet, Cadillac, Buick, and GMC in all of Ontario!

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