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2018 GMC Sierra 2500HD Overview, Reviews, Ratings & Specs

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Drew B | March 31, 2025
The 2018 GMC Sierra 2500HD is a heavy-duty pickup truck built for serious work, part of the fourth generation Sierra introduced in 2014. Available as a regular, double, or crew cab with various bed lengths, it offered trims like base, SLE, SLT, and Denali. Pricing ranged from approximately $35,000 to $65,000 when new. Its blend of capability, refinement (especially in higher trims), and distinctive GMC styling contributed to its popularity.
The Good

The 2018 Sierra 2500HD offers robust performance with its powerful engine options, a comfortable ride (especially in higher trims), and a bold design. Practically, it provides impressive towing and payload capacity and generally good reliability. Emotionally, it offers a sense of capability and status associated with owning a heavy-duty truck.

The Bad

Some known weaknesses of the 2018 Sierra 2500HD include potential issues with the emissions system, especially on diesel models. Also, the infotainment system can feel dated compared to rivals. The ride can be stiff, especially on lower trims. Watch out for potential transmission issues on higher mileage trucks.

2018 GMC Sierra 2500HD: Quick Overview

  • Engine Options:
    • 6.0L Vortec V8 (Gasoline): Standard engine.
    • 6.6L Duramax Turbo-Diesel V8: Optional, more powerful engine.
  • Horsepower:
    • 6.0L V8: 360 hp
    • 6.6L Duramax: 445 hp
  • Fuel Economy: Heavy-duty trucks are not typically rated for fuel economy by the EPA. Expect significantly lower MPG compared to light-duty trucks. Diesel engines generally offer better mileage than gasoline engines, especially when towing. Real-world MPG can vary widely.
  • 0-60 Times: Not a primary performance metric for heavy-duty trucks, but expect the Duramax diesel to be quicker than the gasoline engine, in the 7-8 second range potentially.
  • Towing Capacity:
    • Maximum towing capacity can reach up to 18,100 lbs (depending on configuration, engine, and drivetrain).
  • Trim-Level Features:
    • Base: Vinyl seating, basic audio system, standard safety features.
    • SLE: Cloth seating, upgraded infotainment system, alloy wheels.
    • SLT: Leather seating, dual-zone climate control, premium audio system.
    • Denali: Premium leather, navigation, heated and ventilated seats, advanced safety features, unique exterior styling.
    • Available features across trims: 4WD, various cab and bed configurations, trailering packages, bed liners, sunroof.

2018 GMC Sierra 2500HD Specifications

Vehicle Information
Year 2018
Make GMC
Model Sierra 2500HD
Trim -
Style -
Type Pickup Truck
Category Standard Pickup Truck
Manufacturing Details
Made In United States
Manufacturing City FORT WAYNE
Dimensions
Doors 4-Door
Curb Weight -
Gross Vehicle Weight Rating -
Overall Height 77.80 inches
Overall Length 248.90 inches
Overall Width 80.50 inches
Wheelbase Length 158.10 inches
Standard Seating 6
Engine & Performance
Engine 6.6-L V-8 OHV 16V Diesel
Engine Size 6.6L
Engine Cylinders 8
Transmission 6-Speed Automatic
Transmission Type Automatic
Transmission Speeds 6-Speed
Drivetrain Four-Wheel Drive
Additional Features
Anti-Brake System 4-Wheel ABS
Steering Type Recirculating
Pricing
Manufacturer Suggested Retail Price (MSRP) $50,680
Invoice Price $47,132
Delivery Charges -

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What Problems Does the 2018 GMC Sierra 2500HD Have?

Frequently reported problems for the 2018 GMC Sierra 2500HD often revolve around the diesel emissions system, particularly with the diesel exhaust fluid (DEF) system and sensors. Some owners have reported issues with the diesel particulate filter (DPF) clogging prematurely, requiring expensive repairs. There have also been reports of occasional transmission issues, especially with higher mileage trucks.

Other common issues include problems with the infotainment system, such as freezing or glitching. Some owners have noted concerns about the durability of certain interior components. Rust can be a concern in regions with harsh winters and road salt use, particularly on the undercarriage.

Recall information should be checked with the NHTSA (National Highway Traffic Safety Administration) database using the VIN of any specific vehicle being considered. While the 2018 model year itself might not have a high number of recalls, it's crucial to verify. Long-term reliability concerns often focus on the aforementioned emissions system and transmission issues. Proper maintenance, especially regular oil changes and fluid checks, is crucial to mitigate these potential problems.

How long will the 2018 GMC Sierra 2500HD last?

With proper maintenance, a 2018 GMC Sierra 2500HD can easily last for 200,000 miles or more. Many owners report exceeding 250,000 miles with regular servicing. Expect 10-15 years of service with good maintenance habits. Key to longevity is consistent oil changes, transmission fluid servicing, and addressing any mechanical issues promptly. Long-term durability is generally good, but weaknesses, as noted earlier, include potential emissions system problems (especially on diesels) and occasional transmission issues, which become more prevalent with age and higher mileage. Rust prevention is also crucial in certain climates.

What Technology & Safety Features are Included?

The 2018 GMC Sierra 2500HD offers a range of tech, entertainment, driver-assistance, and safety features, varying by trim level. The infotainment system includes a touchscreen display with available Apple CarPlay and Android Auto integration. Lower trims have basic audio systems, while higher trims offer Bose premium sound.

Driver-assistance features available (often optional or on higher trims) include lane departure warning, forward collision alert, and front and rear park assist. Safety features include standard airbags, anti-lock brakes, and stability control. A rearview camera is also standard.

Crash-test ratings from the NHTSA and IIHS may vary. Check official sources for the most up-to-date ratings. Higher trims like the Denali often include additional safety technologies. The tech, while functional, can feel somewhat dated compared to newer trucks, especially in terms of screen resolution and processing speed. The available 4G LTE Wi-Fi hotspot is a useful feature for staying connected on the go. Blind spot monitoring with rear cross-traffic alert was an optional feature on some trims.

What Colors Options are Available?

Exterior Colors
Summit White
Onyx Black
Quicksilver Metallic
Cardinal Red
Deep Blue Metallic
Iridium Metallic
Graphite Metallic
Stone Blue Metallic
Pepperdust Metallic
Interior Colors
Dark Ash/Jet Black
Cocoa/Dune

2018 GMC Sierra 2500HD Prices and Market Value

When new, the 2018 GMC Sierra 2500HD ranged from approximately $35,000 to $65,000, depending on the trim, configuration, and options. Current used market prices vary considerably based on mileage, condition, and location, but typically range from $30,000 to $50,000. Depreciation is relatively moderate for heavy-duty trucks, as they retain their value well. Factors affecting resale value include mileage, maintenance history, overall condition, trim level (Denali models command higher prices), and whether it's a diesel or gasoline engine. Lower mileage, well-maintained diesel models in higher trims hold their value best.

2018 GMC Sierra 2500HD Cost of Ownership

The 2018 GMC Sierra 2500HD is generally costly to own. Insurance premiums are higher compared to smaller vehicles. Fuel costs are significant, especially with the gasoline engine. Maintenance, including oil changes and tire replacements, can be expensive. Repairs, particularly for the diesel engine and emissions system, can also be costly. While not economical, its capability and durability can justify the expense for those who need a heavy-duty truck for work or towing.

2018 GMC Sierra 2500HD Fuel Efficiency

Fuel Type Diesel
Fuel Capacity 36.00 gallons
City Mileage 0 mpg
Highway Mileage 0 miles/gallon

2018 GMC Sierra 2500HD Warranty

Basic
Original warranty 36 months / 36,000 miles
Estimated remaining Expired
Powertrain
Original warranty 60 months / 60,000 miles
Estimated remaining Expired
Rust
Original warranty 72 months / 100,000 miles
Estimated remaining Expired

2018 GMC Sierra 2500HD Insurance

Insurance for a 2018 GMC Sierra 2500HD is moderately priced, reflecting its status as a Pickup Truck with strong safety ratings and
reasonable repair costs.

How Does the 2018 GMC Sierra 2500HD Compare to Other Pickup Truck?

The 2018 GMC Sierra 2500HD competes with the Ford F-250, Ram 2500, and Chevrolet Silverado 2500HD. In terms of performance, the Duramax diesel is comparable to rivals' diesel offerings. Features are generally similar, with each brand offering unique infotainment systems and driver-assistance technologies. Reliability is comparable, though each brand has its own common issues. Price points are also competitive.

The Ford F-250 often boasts a slightly more modern interior and robust towing numbers. The Ram 2500 is often praised for its comfortable ride quality, especially with the available coil spring rear suspension. The Chevrolet Silverado 2500HD is mechanically very similar to the Sierra 2500HD, often making it a similar, potentially slightly more affordable option.

Whether one is "better" depends on individual needs and preferences. If ride comfort is a priority, the Ram 2500 might be preferred. If cutting-edge technology is desired, the Ford F-250 could be considered. For those prioritizing value and a familiar driving experience, the Silverado 2500HD is a worthwhile alternative. The Sierra 2500HD remains a strong contender with its blend of capability and refinement.

Ranks #336 Truck

1 2023 Toyota Tundra (5.0★)
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4 2020 Mercedes-Benz Sprinter Cab Chassis (0.0★)
5 2024 Chevrolet Silverado 3500HD (0.0★)
6 2023 Hyundai Santa Cruz (5.0★)
7 2023 Nissan Frontier (5.0★)
8 2024 GMC Sierra 2500HD (0.0★)
9 2023 Ram 4500 (0.0★)
10 2022 Jeep Gladiator (5.0★)
11 2012 Suzuki Equator (0.0★)
12 2009 Mitsubishi Raider (5.0★)
336 2018 GMC Sierra 2500HD (0.0★)

Final Verdict: Is the 2018 GMC Sierra 2500HD a Good Pickup Truck?

The 2018 GMC Sierra 2500HD is ideal for individuals or businesses needing a capable heavy-duty truck for towing and hauling. It's a worthwhile buy, especially on the used market, for those who appreciate its blend of capability and GMC refinement. Consider higher trims like the SLT or Denali for enhanced comfort and features. Purchasing a used model with a well-documented maintenance history is crucial, and a pre-purchase inspection by a qualified mechanic is highly recommended, especially for diesel models, to assess the condition of the emissions system. Carefully evaluate your towing needs to choose the right engine and configuration.

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Drew B

Drew is a seasoned automotive expert and contributor to VinCheck.info. With nearly 15 years of experience as a former Porsche technician, he brings a wealth of hands-on knowledge to his writing. Born in North Carolina, a region renowned for its deep-rooted NASCAR culture, Drew developed a passion for cars early in life, often building and working on vehicles from a young age. At VINCheck, Drew leverages his extensive technical background to provide in-depth analyses of various vehicles. His articles often focus on engine performance, reliability, and maintenance insights, offering readers practical information grounded in real-world experience. Some of his notable contributions include reviews on the Mazda CX-5's longevity and detailed examinations of engine options for models like the 2011 Toyota Camry and Tacoma