Compare 5 trims on the 2021 GMC Sierra 3500

It’s important to carefully check the trims of the car you’re interested in to make sure that you’re getting the features you want, and aren’t overpaying for those you don’t want.


Our comparison will help you prioritize the trims that are right for you.

Style
4WD Crew Cab 172" AT4 4WD Crew Cab 159" AT4
Inventory price
Starting at $60,500 Starting at $60,300
MPG
0 combined MPG 0 combined MPG
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Transmission
6-Speed A/T 6-Speed A/T
Drivetrain
Four Wheel Drive Four Wheel Drive
Color
6 exterior
6 exterior
Seating
5 5
Full specs
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Style
4WD Crew Cab 159" Denali 4WD Crew Cab 172" Denali
Inventory price
Starting at $66,700 Starting at $66,900
MPG
0 combined MPG 0 combined MPG
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Transmission
6-Speed A/T 6-Speed A/T
Drivetrain
Four Wheel Drive Four Wheel Drive
Color
9 exterior
9 exterior
Seating
5 5
Full specs
View full specs View full specs

Style
2WD Double Cab 162" SLE 4WD Double Cab 162" SLE 4WD Reg Cab 142" SLE 2WD Reg Cab 142" SLE 4WD Crew Cab 159" SLE 4WD Crew Cab 172" SLE 2WD Crew Cab 159" SLE 2WD Crew Cab 172" SLE
Inventory price
Starting at $45,000 Starting at $47,800 Starting at $45,600 Starting at $42,800 Starting at $49,400 Starting at $49,600 Starting at $46,600 Starting at $46,800
MPG
0 combined MPG 0 combined MPG 0 combined MPG 0 combined MPG 0 combined MPG 0 combined MPG 0 combined MPG 0 combined MPG
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Transmission
6-Speed A/T 6-Speed A/T 6-Speed A/T 6-Speed A/T 6-Speed A/T 6-Speed A/T 6-Speed A/T 6-Speed A/T
Drivetrain
Rear Wheel Drive Four Wheel Drive Four Wheel Drive Rear Wheel Drive Four Wheel Drive Four Wheel Drive Rear Wheel Drive Rear Wheel Drive
Color
8 exterior
8 exterior
8 exterior
8 exterior
8 exterior
8 exterior
8 exterior
8 exterior
Seating
5 5 3 3 5 5 5 5
Full specs
View full specs View full specs View full specs View full specs View full specs View full specs View full specs View full specs

Style
4WD Crew Cab 172" SLT 2WD Crew Cab 159" SLT 2WD Crew Cab 172" SLT 4WD Crew Cab 159" SLT
Inventory price
Starting at $57,600 Starting at $54,600 Starting at $54,800 Starting at $57,400
MPG
0 combined MPG 0 combined MPG 0 combined MPG 0 combined MPG
Engine
445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel) 445.0-hp, 6.6-liter, 8 Cylinder Engine (Diesel Fuel)
Transmission
6-Speed A/T 6-Speed A/T 6-Speed A/T 6-Speed A/T
Drivetrain
Four Wheel Drive Rear Wheel Drive Rear Wheel Drive Four Wheel Drive
Color
9 exterior
9 exterior
9 exterior
9 exterior
Seating
5 5 5 5
Full specs
View full specs View full specs View full specs View full specs