2020 GMC Sierra 3500 review
GMC Sierra 3500 highlights
Customer rating
Mileage (EPA estimate)
(data not available)
Pricing for current inventory
(no current inventory)
All GMC Sierra 3500 years
What is new for the 2020 GMC Sierra 3500?
- The Sierra 3500 is available in a new trim called the AT4.
- Sierra 3500 trims have been upgraded with Rear Seat Heaters, Blind Spot Monitor, Smart Key, and 20 Inch Plus Wheels as standard equipment this year.
- The Denali trim now comes with Dual Rear Wheels as standard equipment.
- The SLE trim now comes with Dual Rear Wheels as standard equipment.
- The SLT trim now comes with Heated Steering Wheel and Dual Rear Wheels as standard equipment.
2020 GMC Sierra 3500 trims
Base:
- 6.6L
- 401-hp, 464-lb-ft of torque 6.6L
- 445-hp, 910-lb-ft of torque 6.6L
- Traction Control
- Vinyl Seats
- Automatic Transmission
- Bluetooth Technology
- Apple CarPlay
- Android Auto
- 4WD/AWD
- Side Airbags
- View our GMC Sierra 3500 inventory
SLE:
- Includes all features available on the Base
- Cloth Seats
- Power Mirrors
- Cruise Control
- Alloy Wheels
- View our GMC Sierra 3500 SLE inventory
SLT:
- Includes all features available on the SLE
- Memory Seats
- Front Seat Heaters
- Power Seats
- Leather Seats
- Remote Start
- Smart Key
- Heated Steering Wheel
- Rear Defroster
- View our GMC Sierra 3500 SLT inventory
AT4:
- Includes all features available on the SLT
- Rear Seat Heaters
- A/C Seats
- View our GMC Sierra 3500 AT4 inventory
Denali:
- Includes all features available on the AT4
- Parking Sensors
- Blind Spot Monitor
- Lane Departure Warning
- 20 Inch Plus Wheels
- BOSE Sound System
- Navigation System
- View our GMC Sierra 3500 Denali inventory
Shop with your budget in mind
Ratings & reliability
RepairPal gave the GMC Sierra 3500 an overall reliability rating of 3 out of 5 stars, which RepairPal describes as Average. This rating ranks GMC Sierra 3500 14th out of 19 among Fullsize Trucks.
View RepairPal's full rating of the GMC Sierra 3500GMC Sierra 3500 features and specs
Base 2WD 2D Regular Cab
Standard Features
- ABS Brakes
- Air Conditioning
- AM/FM Stereo
- Android Auto
- Apple CarPlay
- Automatic Transmission
- Auxiliary Audio Input
- Bluetooth Technology
- Dual Rear Wheels
- Long Bed
- Overhead Airbags
- Power Windows
- Rear View Camera
- Side Airbags
- Tow Hitch
- Traction Control
- Vinyl Seats
- Alloy Wheels
- Bed Cover
- Bed Liner
- Blind Spot Monitor
- Cloth Seats
- Cruise Control
- Dual Rear Wheels
- Fifth Wheel Tow Hitch
- Flex Fuel Vehicle
- Gooseneck Tow Hitch
- Lane Departure Warning
- Long Bed
- Navigation System
- Parking Sensors
- Power Locks
- Power Mirrors
- Rear Defroster
- Rear View Camera
- Running Boards
- Smart Key
- Tow Hitch
Drive Wheels
Rear Wheel Drive (2WD)
Engine size
6.6L
Horsepower
401
Torque (ft-lbs)
464
Engine type
Gas
Fuel capacity
36
Wheelbase
141.55"
Overall length
235.5"
Width
81.75"
Height
80.94"
Leg room
F 44.53"
Head room
F 43.11"
Front tires
LT275/70R18
Rear tires
LT275/70R18
Seating capacity
3
Max towing capacity
1450/20000 lbs.
Transmission
Automatic
2020 GMC Sierra 3500 FAQ
The GMC Sierra 3500 received a rating of 3 out of 5 stars from RepairPal, which RepairPal describes as Average. This rating ranks the GMC Sierra 3500 as 13 out of 19 among Fullsize Truck
The 2020 GMC Sierra 3500 has a maximum towing capacity of 20000 pounds, when properly equipped. Various factors may impact towing capacity, including weight of passengers, cargo, and options/accessories.
Here is what's new for the 2020 GMC Sierra 3500:
- AT4
- Rear Seat Heaters
- Blind Spot Monitor
- Smart Key
- 20 Inch Plus Wheels
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Statements of fuel economy or EV range are based on EPA and other third-party estimates for vehicles when new. Fuel economy and EV range will degrade with time and vary based on age, driving conditions, vehicle history, and other conditions. See fueleconomy.gov for more info.
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