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  • Sommer's Buick GMC Mequon, WI
  • Sommer's Buick GMC

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    Mequon, WI 53092
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Sommer's Buick GMC Mequon, WI

Sommer's Buick GMC

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  • New
    • All New Inventory
    • New Buick Inventory
    • New GMC Inventory
    • New Specials
    • Get Pre-Approved
    • Instant Cash Offer
    • GMC Tax Deductions
  • Used
    • Search Inventory
    • Vehicles Under $15k
    • Certified Pre-Owned Vehicles
    • Get Pre-Approved
    • Why Buy Used
    • GM Rewards
    • What is Simplified Pricing?
    • Auto Loan Savings Program
    • Instant Cash Offer
    • Certified Pre-Owned
  • Schedule Service
    • Schedule Service
    • Tire Finder
  • Specials
    • New Specials
    • Service & Parts Specials
    • Pre-Owned Specials
  • Research
    • 2025 Model Research
    • All New Hummer
    • Buy vs. Lease
    • 2025 GMC Sierra 1500 vs. 2025 Ford F-150
    • Trade in Your Vehicle
    • Sell Us Your Car
    • Service & Parts
  • Finance
    • GMC My Rewards
    • Finance Department
    • Payment Calculator
    • Get Pre-Approved
    • Instant Cash Offer
    • Get pre-qualified with Capital One (no impact to your credit score)
  • Dealer Info
    • Dealer Info
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    • GMC Dealership Milwaukee, WI
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2023 GMC Sierra

2023 GMC Sierra in Mequon, WI

MPG

21 City

23 Highway

1 Vehicles Available

2023 GMC SIerra

The 2023 GMC Sierra is a light-duty pickup truck perfect for work and play. It delivers rugged capabilities and has a sleek and stylish design that is equally at home on city streets and tight trails. You'll also enjoy an array of comfort and connectivity features and state-of-the-art safety technology. Whether you're on your way to the worksite or the campsite, you'll always enjoy the journey while driving the Sierra.

Trim Levels

With eight trim levels to choose from, it's easy to find a 2023 Sierra that suits your style. The Pro comes standard with LED headlights, taillights, and daytime running lights, while an available Graphite Edition Package adds body-colored accents that give the Sierra a sophisticated, streamlined silhouette. With the SLE, you can take advantage of LED cargo bed lighting, deep-tinted glass, and GMC's MultiPro tailgate. The Elevation features a monochromatic exterior with a gloss-black grille and unique 20-inch wheels, and the SLT gives you the option of adding 20-inch polished wheels with Technical Gray accents. If you go with the AT4, you can equip your Sierra with GMC's CarbonPro composite truck bed, which is highly resistant to dents and scratches. The Denali announces its arrival with a signature grille featuring a chrome header, while the AT4X offers a unique steel transfer case skid plate. Last but not least is the Denali Ultimate featuring a Vader Chrome grille and 22-inch seven-spoke machined aluminum wheels.

Engine

While the 2023 Sierra is an attractive pickup, it doesn't rely on good looks alone. Under the hood sits a 2.7-liter high-output four-cylinder engine capable of producing 310 horsepower and 430 pound-feet of torque. GMC also offers a 5.8-liter EcoTec3 V-8 that generates 355 horsepower and 383 pound-feet of torque. This engine comes standard on midlevel trims, or you can upgrade to a 6.2-liter EcoTec3 V-8 that puts out 420 horsepower and 460 pound-feet of torque. If you prefer a diesel-powered pickup, you can equip your Sierra with a 3.0-liter Duramax turbo-diesel engine with an output of 305 horsepower and 495 pound-feet of torque.

Performance

The 2023 Sierra is built for superior performance. The four-cylinder engine teams with an eight-speed transmission, while the other engines in the lineup pair with a 10-speed transmission. Both systems optimize engine output and efficiency while enabling smooth acceleration and effortless handling. The AT4 adds a 2-inch factory lift with off-road suspension and Rancho monotube shocks. If you go with the Denali, you'll enjoy a continuous damping adaptive ride control that makes every drive smoother and more comfortable.

Interior

With the 2023 Sierra, you can choose between a three-seater regular cab, a five-seater double cab, or a five-seater crew cab. All cabins offer ample passenger space, premium seating surfaces, and distinctive accents. Available amenities include a 13.4-inch diagonal color touchscreen, a 12.3-inch driver information center, and rear-seat storage compartments.

Safety Features

The 2023 GMC Sierra's safety features include automatic emergency braking, a forward-collision alert, and front pedestrian braking. You can also take advantage of an HD rear-vision camera, lane-keeping system, and rear-seat reminder. Six occupant-sensing airbags add another layer of protection for your most precious cargo.
 

*All prices plus tax, title, license, and $395 dealer service fee extra. MSRP is the Manufacturer’s Suggested Retail Price of the vehicle and may not represent the actual sales price. Offers, incentives, discounts, or financing are subject to expiration and other restrictions.

The Manufacturer's Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

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