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2018 GMC Sierra 3500 review

Research, photos, specs, and expertise

GMC Sierra 3500 highlights

Customer rating

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RepairPal reliability rating

RepairPal Reliability Ratings are based on the actual cost, frequency, and severity of unscheduled repairs and maintenance on make/model data for select 2008-2022 vehicles. The reliability of a specific vehicle may vary depending on its maintenance and driving history, model year, trim, and features. RepairPal Reliability Ratings are provided by RepairPal and CarMax is not responsible for their accuracy. These ratings are based on RepairPal Reliability data as of August 2023. Learn more about RepairPal reliability ratings

Mileage (EPA estimate)

(data not available)

Pricing for current inventory

(no current inventory)

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Year
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All GMC Sierra 3500 years

What is new for the 2018 GMC Sierra 3500?

  • Sierra 3500 trims have been upgraded with Apple CarPlay and Android Auto as standard equipment this year.
  • The Base trim now comes with Cloth Seats, Power Mirrors, Rear View Camera, and Bluetooth Technology as standard equipment.

2018 GMC Sierra 3500 trims

Curious how GMC Sierra 3500 trims differ? Use our side-by-side vehicle comparison to see the differences and similarities

Base:

  • 445-hp, 910-lb-ft of torque 6.6L
  • 360-hp, 380-lb-ft of torque 6.0L
  • Vinyl Seats
  • Side Airbags
  • Overhead Airbags
  • Cruise Control
  • Cloth Seats
  • Power Mirrors
  • Traction Control
  • Rear View Camera
  • View our GMC Sierra 3500 inventory

SLE:

SLT:

Denali:

  • Includes all features available on the SLT
  • A/C Seats
  • Heated Steering Wheel
  • Parking Sensors
  • Lane Departure Warning
  • Bed Liner
  • Running Boards
  • BOSE Sound System
  • Navigation System
  • View our GMC Sierra 3500 Denali inventory

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Ratings & reliability

Customer ratings

The 2018 GMC Sierra 3500 is not yet rated. Help future customers learn about a car you've owned and write a review.

RepairPal reliability rating

RepairPal Reliability Ratings are based on the actual cost, frequency, and severity of unscheduled repairs and maintenance on make/model data for select 2008-2022 vehicles. The reliability of a specific vehicle may vary depending on its maintenance and driving history, model year, trim, and features. RepairPal Reliability Ratings are provided by RepairPal and CarMax is not responsible for their accuracy. These ratings are based on RepairPal Reliability data as of August 2023. Learn more about RepairPal reliability ratings

3
Average

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 3500

GMC Sierra 3500 features and specs

Curious how GMC Sierra 3500 trims differ? Use our side-by-side vehicle comparison to see the differences and similarities

SLE 2WD 2D Regular Cab

Standard Features

  • ABS Brakes
  • Air Conditioning
  • Alloy Wheels
  • AM/FM Stereo
  • Apple CarPlay
  • Automatic Transmission
  • Auxiliary Audio Input
  • Bluetooth Technology
  • CD Audio
  • Cloth Seats
  • Cruise Control
  • Dual Rear Wheels
  • Flex Fuel Vehicle
  • Power Locks
  • Power Mirrors
  • Power Seat(s)
  • Power Windows
  • Rear View Camera
  • Satellite Radio Ready
  • Tow Hitch
  • Traction Control

Optional Features

Actual features may vary per car. Visit a car's detail page for a list of its actual features or contact us for more details.

  • Alloy Wheels
  • Bed Cover
  • Bed Liner
  • Fifth Wheel Tow Hitch
  • Flex Fuel Vehicle
  • Gooseneck Tow Hitch
  • Lane Departure Warning
  • Navigation System
  • Overhead Airbags
  • Parking Sensors
  • Power Seat(s)
  • Rear Defroster
  • Remote Start
  • Running Boards
  • Side Airbags

Drive Wheels

Rear Wheel Drive (2WD)

Engine size

6.0L

Horsepower

360

Torque (ft-lbs)

380

Engine type

Gas

Fuel capacity

36

Wheelbase

133.6"

Overall length

224.4"

Width

80.12"

Height

77.83"

Leg room

F 45.27"

Head room

F 42.8"

Front tires

LT265/70R18E

Rear tires

LT265/70R18E

Seating capacity

3

Max towing capacity

1450/14600 lbs.

Transmission

Automatic

2018 GMC Sierra 3500 FAQ

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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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