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2018 GMC Sierra 3500 review

Research, photos, specs, and expertise

GMC Sierra 3500 highlights

Customer rating

(not yet rated)

RepairPal reliability rating

Pros

  • Amazing power from the diesel engine
  • Quiet and smooth ride
  • Impressively upscale interior

Cons

  • Roof pillars affect rear visibility
  • Not exactly mpg-focused
  • Base model lacks some driver adjustments

Mileage (EPA estimate)

(data not available)

Pricing for current inventory

(no current inventory)

View our GMC Sierra 3500 inventory
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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.
  • Vinyl Seats features are now available as options on select trims.

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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Getting pre-qualified lets you shop with personalized monthly payments, and it doesn't impact your credit score.

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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

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 2D Regular Cab 2WD

Standard Features

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

Optional Features

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

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

The 2018 GMC Sierra 3500 has a maximum towing capacity of between 14600 and 23300 pounds, when properly equipped. Various factors may impact towing capacity, including weight of passengers, cargo, and options/accessories.
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 14 out of 19 among Fullsize Truck
Here is what's new for the 2018 GMC Sierra 3500:
  • Apple CarPlay
  • Android Auto
  • Vinyl Seats

Research other vehicles


* Price excludes tax, title, tags and $799 CarMax processing fee (not required by law). Price assumes that final purchase will be made in the State of NC, unless vehicle is non-transferable. Vehicle subject to prior sale. Applicable transfer fees are due in advance of vehicle delivery and are separate from sales transactions. Limited warranty is 30 days. See store for details. We make every effort to provide accurate information, but please verify before purchasing.

We hope you found this information helpful. This content is intended to inform and is not meant to indicate that a particular vehicle is currently available or recommended for you.​

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.

Unless otherwise noted, information related to featured vehicles comes from third-party sources, including manufacturer information. Product and company names may be trademarks or registered trademarks of third-party entities. Use of them does not imply any affiliation with or endorsement by these entities.​ By clicking on any video links, you will be taken to a third-party site maintained by YouTube, Inc.

We make every effort to provide accurate information, but please verify before purchasing.