New GMC Heavy Duty Trucks

1 Suburban Savings is applied for eveyone

New GMC Heavy-Duty Trucks for Sale in Costa Mesa

If your work requires a high degree of utility and strength, our selection of heavy-duty GMC trucks is the right place to look. Whether you're optimizing towing capability, fleet management, or cargo bed functionality, the 2021 GMC Sierra HD provides professional-grade features and capabilities to maximize your productivity.

At Suburban Costa Mesa, we serve Huntington Beach and surrounding communities by carrying a wide variety of the latest heavy-duty GMC work trucks. As you look through our inventory, you will find variations in engine options, beds, cabins, and features. With so many options to choose from, you can find the best match for your business needs around Newport Beach.

Learn more about our heavy-duty GMC trucks to discover which would suit your driving needs around Santa Ana best.

What's New for the GMC Heavy-Duty Lineup?

You can expect changes to towing technology, utility, and trim level features for the 2021 Sierra HD. When it comes to newly available features, the SLE trim level now comes with the MultiPro tailgate for more versatility and adaptability on the job site, while the SLT now features wireless Apple CarPlay® and Android Auto™. The high-end Denali trim level now comes with a high-definition 360-degree camera and a bed-view camera.

The off-road-ready AT4 trim level includes available mud-terrain tires and a high clearance step accessory.

Some of the other major changes to the Sierra HD include:

  • Maximum towing increased to 36,000 pounds
  • Denali Black Diamond Edition includes a Kicker audio system
  • New jack-knife alert and trailer length indicator


It wouldn't be a GMC truck without incredible capability and strength. The GMC Sierra HD offers the best-in-class available towing capacity of up to 36,000 pounds. This power makes it possible to find more convenience and efficiency on the job site, making it possible to tow previously impossible objects. Whether you need to tow construction equipment or trailers, the Sierra HD allows you to take on challenges with ease.

The strength of the Sierra HD not only comes from its impressive engine options but also its construction. A large driveshaft and rear axle ensure the durability and strength needed for heavy cargo and payloads. The improved brakes and independent front suspension provide a higher degree of maneuverability and responsiveness than what you expect from most heavy-duty trucks.

The new Sierra HD offers a maximum payload of 5,607 pounds, allowing you to load up the cargo bed with heavy equipment and materials.


There are two powerful engine options available for the new Sierra HD. The standard 6.6-liter V8 engine produces 401 horsepower and 464 pound-feet of torque, while the available 6.6-liter V8 Turbo Diesel provides 445 horsepower and 910 pound-feet of torque for impressive diesel power.

Some of the top performance features available for the new Sierra HD include:

  • Electronic shift two-speed transfer case with push-button controls
  • Allison® 10-speed automatic transmission
  • Hill Descent Control
  • Integrated trailer brake controller
  • StabiliTrak, electronic stability control system with traction control


Just because heavy-duty GMC trucks offer incredible power and capability doesn’t mean that they don't also hit the mark when it comes to technology. With advanced features, you can enjoy more functionality, entertainment, and convenience.

Top technology features available include:

  • 4G LTE Wi-Fi® hotspot capable
  • 8-inch diagonal Premium GMC Infotainment System with Navigation
  • Apple CarPlay™ and Android Auto®
  • Bed View Camera
  • Wireless Charging


The GMC Sierra HD combines aggressive appearance with highly functional features. Not only will you discover an intelligent design to make accessing the cargo bed and exterior features intuitive, but the Sierra HD looks good while doing it.

Some of the top design features include:

  • Cargo bed LED lighting
  • CornerStep rear bumper
  • GMC MultiPro Tailgate
  • LED taillamps
  • ProGrade Trailering System

Come to Our GMC Dealership

Take the short drive from Anaheim to our dealership to explore our new heavy-duty work trucks for yourself. Contact our sales team to schedule a test drive today.