Compare 2021 GMC Sierra 1500 AT4 vs Base vs Denali

$30,100 - $59,600
Price range (MSRP)
2021 GMC Sierra 1500 For Sale
16/21 mpg
City/Hwy
285 hp
Horsepower
8.5
2021 GMC Sierra 1500 Review and Specs
Select configuration:
2021 GMC Sierra 1500 AT4
$54,700
Starting Price (MSRP)
2021 GMC Sierra 1500 AT4 For Sale
Select configuration:
2021 GMC Sierra 1500 Base
$30,100
Starting Price (MSRP)
2021 GMC Sierra 1500 Base For Sale
Select configuration:
2021 GMC Sierra 1500 Denali
$55,800
Starting Price (MSRP)
2021 GMC Sierra 1500 Denali For Sale
What are the differences between the 2021 GMC Sierra 1500 AT4, Base and Denali?

Overview

Engine
5.3L V8 Gas
3.0L Turbo Inline-6 Diesel (+$995)
6.2L Turbo V8 (+$2,495)
Engine
4.3L V6 Flex-fuel (FFV)
5.3L EcoTec3 V8 (+$1,395)
Engine
5.3L V8 Gas
3.0L Turbo Inline-6 Diesel (+$995)
Transmission
10-Speed Automatic
Transmission
6-Speed Automatic
Transmission
8-Speed Automatic
10-Speed Automatic (Optional)
Drivetrain
Four-Wheel Drive
Drivetrain
Rear-Wheel Drive
Drivetrain
Rear-Wheel Drive
Fuel Economy
City: 16 MPG
Hwy: 21 MPG
Fuel Economy
City: 16 MPG
Hwy: 21 MPG
Fuel Economy
City: 17 MPG
Hwy: 23 MPG
Fuel Tank Capacity
24 gallons
Fuel Tank Capacity
28 gallons
Fuel Tank Capacity
24 gallons
Seating Capacity
5 seater
Seating Capacity
3 seater
Seating Capacity
5 seater

Performance Specs

Engine and Transmission

Engine
5.3L V8 Gas
3.0L Turbo Inline-6 Diesel (+$995)
6.2L Turbo V8 (+$2,495)
4.3L V6 Flex-fuel (FFV)
5.3L EcoTec3 V8 (+$1,395)
5.3L V8 Gas
3.0L Turbo Inline-6 Diesel (+$995)
Horsepower
355 hp @ 5600 rpm
285 hp @ 5300 rpm
355 hp @ 5600 rpm
Torque
383 lb-ft @ 4100 rpm
305 lb-ft @ 3900 rpm
383 lb-ft @ 4100 rpm
Transmission
10-Speed Automatic
6-Speed Automatic
8-Speed Automatic
10-Speed Automatic (Optional)
Drivetrain
Four-Wheel Drive
Rear-Wheel Drive
Rear-Wheel Drive

Weight and Towing

Maximum Towing Capacity
9,200 lbs
9,900 lbs
N/A

Fuel and MPG

Fuel Economy

Combined
18 MPG
17 MPG
19 MPG
City
16 MPG
16 MPG
17 MPG
Highway
21 MPG
21 MPG
23 MPG

Emissions

CO2 Emissions @ 15K mi/year
9.9 Tons/yr
10.4 Tons/yr
9.4 Tons/yr

Fuel Tank

Fuel Tank Capacity
24 gallons
28 gallons
24 gallons
Cruising Range City
384 miles
448 miles
408 miles
Cruising Range Highway
504 miles
588 miles
552 miles

Dimensions and Measurement

Exterior Dimensions

Length
231.72 in
229.6 in
231.72 in
Height
78.35 in
75.6 in
75.49 in
Max Width
81.24 in
81.15 in
81.24 in
Wheelbase
147.53 in
139.56 in
147.43 in

Interior Space

Seating Capacity
5 seater
3 seater
5 seater
Front Seat Leg Room
44.53 in
44.53 in
44.53 in
Front Seat Headroom
43.03 in
43.11 in
43.03 in
Front Seat Shoulder Room
66.02 in
66.06 in
66.02 in
Front Seat Hip Room
61.18 in
60.9 in
61.18 in
Rear Seat Leg Room
43.4 in
N/A
43.4 in
Rear Seat Headroom
40.12 in
N/A
40.12 in
Rear Seat Shoulder Room
65.16 in
N/A
65.16 in
Rear Seat Hip Room
60.24 in
N/A
60.24 in

Wheels and Suspension

Steering

Steering Type
Electric Rack & Pinion
Electric Rack & Pinion
Electric Rack & Pinion
Turning Diameter
46.3 ft
44.7 ft
46.9 ft

Wheels

Wheels Type
Aluminum Wheels
Aluminum Wheels
Aluminum Wheels
Front Wheel Size
18" x 8.5"
17" x 8.0"
20" x 9.0"
Rear Wheel Size
18" x 8.5"
17" x 8.0"
20" x 9.0"

Tires

Front Tire
265/65R18SL
255/70R17
275/60R20
Rear Tire
265/65R18SL
255/70R17
275/60R20
Spare Tire
265/70R17SL
255/70R17
255/80R17SL

Colors and Materials

Standard Interior Materials

  • Jet Black with Kalahari accents, Perforated leather front seat trim
  • Jet Black, Cloth seat trim
  • Jet Black, Cloth seat trim
  • Jet Black, Vinyl seat trim
  • Dark Walnut/Dark Ash Grey, Forge perforated leather seat trim
  • Jet Black, Forge perforated leather seat trim

Features and Options

Infotainment

HD Radio
Standard
Not Available
Standard
Bluetooth Connection
Standard
Standard
Standard
Premium Sound System
Optional
Not Available
Standard
Satellite Radio
Standard
Standard
Standard
Smart Device Integration
Standard
Not Available
Standard
WiFi Hotspot
Standard
Standard
Standard
Auxiliary Audio Input
Standard
Standard
Standard
MP3 Player
Standard
Standard
Standard

Interior Trim

Bucket Seats
Not Available
Standard
Not Available
Cloth Seats
Standard
Standard
Standard
Leather Seats
Standard
Standard
Standard
Leather Steering Wheel
Standard
Not Available
Standard
Premium Synthetic Seats
Standard
Standard
Standard
Vinyl Seats
Standard
Standard
Standard
Sun/Moonroof
Optional
Not Available
Optional

Comfort

Head-Up Display
Optional
Not Available
Optional
Navigation System
Optional
Not Available
Not Available
Steering Wheel Audio Controls
Standard
Optional
Standard
Power Mirror(s)
Standard
Optional
Standard
A/C
Standard
Standard
Standard
Adaptive Cruise Control
Optional
Not Available
Optional
Climate Control
Standard
Not Available
Standard
Cooled Front Seat(s)
Standard
Not Available
Standard
Cruise Control
Standard
Optional
Standard
Heated Front Seat(s)
Standard
Not Available
Standard
Heated Rear Seat(s)
Standard
Not Available
Standard
Heated Steering Wheel
Standard
Not Available
Standard
Keyless Entry
Standard
Optional
Standard
Multi-Zone A/C
Standard
Not Available
Standard
Power Driver Seat
Standard
Optional
Standard
Power Passenger Seat
Standard
Not Available
Standard
Remote Engine Start
Standard
Not Available
Standard
Seat Memory
Standard
Not Available
Standard
Universal Garage Door Opener
Optional
Not Available
Standard
Keyless Start
Standard
Not Available
Standard
Telematics
Standard
Standard
Standard

Safety

Safety Features

Back-Up Camera
Standard
Standard
Standard
Cross-Traffic Alert
Optional
Optional
Standard
Rear Parking Aid
Optional
Optional
Standard
Blind Spot Monitor
Optional
Optional
Standard
Lane Departure Warning
Optional
Not Available
Optional
Lane Keeping Assist
Optional
Not Available
Optional
ABS
Standard
Standard
Standard
Tire Pressure Monitor
Standard
Standard
Standard
Stability Control
Standard
Standard
Standard
Traction Control
Standard
Standard
Standard

US NHTSA crash test result

Overall Rating
Frontal Barrier Crash Rating
Side Crash Rating
Rollover Rating

Airbags

Driver Air Bag
Standard
Standard
Standard
Front Head Air Bag
Standard
Standard
Standard
Front Side Air Bag
Standard
Standard
Standard
Passenger Air Bag
Standard
Standard
Standard
Rear Head Air Bag
Standard
Standard
Standard

Warranty

Warranty Summary

Basic
3 Years / 36,000 Miles
3 Years / 36,000 Miles
3 Years / 36,000 Miles
Corrosion
3 Years / 36,000 Miles
3 Years / 36,000 Miles
3 Years / 36,000 Miles
Drivetrain Note
HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
Drivetrain
5 Years / 60,000 Miles
5 Years / 60,000 Miles
5 Years / 60,000 Miles
Maintenance Note
1 Year/1 Visit
1 Year/1 Visit
1 Year/1 Visit
Roadside Assistance Note
HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
HD Duramax Diesel: 5 Years/100,000 Miles; Qualified Fleet Purchases: 5 Years/100,000 Miles
Roadside Assistance
5 Years / 60,000 Miles
5 Years / 60,000 Miles
5 Years / 60,000 Miles
Rust-Through
6 Years / 100,000 Miles
6 Years / 100,000 Miles
6 Years / 100,000 Miles
Warranty Note
Preliminary 2021 Warranty
Preliminary 2021 Warranty
Preliminary 2021 Warranty
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