2018 GMC Sierra 1500

Research, photos, specs, and expertise
6 photos

GMC Sierra 1500 highlights

Customer rating


  • Abundant cargo space
  • Powerful engine options
  • Spacious, quiet cabin


  • Poor handling
  • Not enough standard tech features
  • No standard advanced driver-assistance systems

Mileage (EPA estimate)

15 city, 20 highway, 17 combined

Pricing for current inventory

(no current inventory)

6 photos

All GMC Sierra 1500 years

What is new for the 2018 GMC Sierra 1500?

  • Sierra 1500 trims have been upgraded with Smart Key as standard equipment this year.
  • Barn Doors features are now available as options on select trims.
  • The SLE trim now comes with Apple CarPlay and Android Auto as standard equipment.
  • The SLT trim now comes with Parking Sensors, Android Auto, and Apple CarPlay as standard equipment.
  • The Base trim now comes with Cloth Seats, Bluetooth Technology, Apple CarPlay, and Android Auto as standard equipment.

2018 GMC Sierra 1500 trims

Curious how GMC Sierra 1500 trims differ? Use our side-by-side vehicle comparison to see the differences and similarities


  • 5.3L
  • 285-hp, 305-lb-ft of torque 4.3L
  • 355-hp, 383-lb-ft of torque 5.3L
  • Cruise Control
  • Cloth Seats
  • Traction Control
  • Side Airbags
  • Overhead Airbags
  • Rear View Camera
  • Automatic Transmission
  • 4WD/AWD
  • View our GMC Sierra 1500 inventory




GMC Sierra 1500 photos

5 reasons to buy the 2018 GMC Sierra 1500

1. Impressive engine choices

The 2018 GMC Sierra 1500 offers three powertrain options, ensuring there's an engine to suit your driving and hauling needs. The base engine is a 4.3L V6, with 285 hp and 305 lb-ft of torque, and a six-speed automatic transmission that can tow an estimated 7,600 lb when properly equipped.

For more power, there are two available V8 engines. The first is a 355-hp 5.3L V8 and an eight-speed automatic transmission that can pull an estimated 11,100 lb when properly equipped.
Opting for a 2018 Sierra 1500 with the range-topping 6.2L V8 with 420 hp provides an estimated 12,500 lbs of hauling power, when properly equipped, to tow your full-size trailer.

2. Diverse cab options

When it comes to the 2018 GMC Sierra 1500, the diverse cab options provide the ideal fit for different lifestyles and needs. Whether you value simplicity, have a larger family, or prioritize passenger comfort and convenience for your crew, there's a configuration that suits you. The Regular Cab offers a straightforward and practical layout, making it ideal for those who prefer simplicity and easy maneuverability. The Double Cab provides ample space for group travels, accommodating up to six passengers comfortably. If you seek maximum passenger comfort, the Crew Cab, with its four full-size doors and generous rear seating, ensures everyone can enjoy a spacious ride.

3. Smooth ride

The 2018 GMC Sierra 1500 delivers a remarkably smooth ride and impressive handling, making it the ideal companion for daily use. Whether you're conquering city streets, tackling rugged job sites, or embarking on a leisurely highway cruise, the Sierra 1500's suspension system ensures a comfortable ride by effortlessly absorbing road imperfections. Inside the cabin, you'll enjoy a serene environment where tire and wind noise are minimized, even on the roughest roads. Whether you're a commuter, a family driver, or a hardworking individual, the 2018 Sierra 1500 provides ride comfort and refined handling to meet your everyday needs.

4. Versatile storage

Discover the exceptional storage versatility of the 2018 GMC Sierra 1500. With its spacious bed options, including a standard 5'8" bed and available 6'6" or 8' beds, this full-size truck can effortlessly accommodate a wide range of hauling needs. Enhancing its functionality, the Sierra 1500 offers available LED lighting and optional cargo box enhancements for added convenience and accessibility. Inside the cabin, you'll find a host of storage compartments, including a center console, door pockets, and optional under-seat storage, providing extra space to keep your work equipment and outdoor gear organized.

5. Innovative infotainment

The 2018 GMC Sierra 1500 sets the standard for innovative infotainment features to elevate your driving experience. You'll enjoy a seven-inch touchscreen infotainment system from the base trim level, while the SLE and higher trims boast an upgraded eight-inch touchscreen system with Apple CarPlay® and Android Auto compatibility. In addition, Bluetooth® connectivity is standard in all models, ensuring seamless integration with your mobile devices. You can also stay connected on the go with the available 4G Wi-Fi hotspot, supporting up to seven web-enabled devices.

Finally, the Denali trim offers built-in navigation, while All Terrain and higher models can be equipped with a premium Bose® stereo system featuring six speakers for concert-like sound.

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Ratings & reliability

Customer ratings

Above Average

RepairPal gave the GMC Sierra 1500 an overall reliability rating of 3.5 out of 5 stars, which RepairPal describes as Above Average. This rating ranks GMC Sierra 1500 4th out of 19 among Fullsize Trucks.

View RepairPal's full rating of the GMC Sierra 1500

GMC Sierra 1500 features and specs

SLE 2WD 2D Regular Cab

Standard Features

  • ABS Brakes
  • Air Conditioning
  • Alloy Wheels
  • AM/FM Stereo
  • Android Auto
  • Apple CarPlay
  • Automatic Transmission
  • Auxiliary Audio Input
  • Bluetooth Technology
  • CD Audio
  • Cloth Seats
  • Cruise Control
  • Flex Fuel Vehicle
  • Overhead Airbags
  • Power Locks
  • Power Mirrors
  • Power Seat(s)
  • Power Windows
  • Rear View Camera
  • Satellite Radio Ready
  • Side Airbags
  • Traction Control
  • 20 Inch Plus Wheels
  • Bed Cover
  • Bed Liner
  • Cloth Seats
  • Flex Fuel Vehicle
  • Lane Departure Warning
  • Navigation System
  • Parking Sensors
  • Rear Defroster
  • Remote Start
  • Running Boards
  • Satellite Radio Ready
  • Tow Hitch

Drive Wheels

Rear Wheel Drive (2WD)

Engine size




Torque (ft-lbs)


Engine type


Fuel capacity




Overall length






Leg room

F 45.27"

Head room

F 42.4"

Front tires


Rear tires


Seating capacity


Max towing capacity

590/9800 lbs.



2018 GMC Sierra 1500 FAQ

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