GMC Models
GMC Truck Models
A complete reference guide to every GMC truck model — from the classic C/K series through every generation of Sierra and Canyon. Production dates, specifications, and history for every GMC truck we buy.
GMC has been building trucks since 1912. The Sierra is GMC’s flagship pickup and has been marketed as the more premium alternative to the mechanically identical Chevrolet Silverado since 1999. We buy every GMC truck — from vintage C/K trucks through every Sierra and Canyon generation. Any year, any condition, any mileage.
This page covers every GMC truck model produced for the North American market. Use the navigation above to jump to a specific model line.
GMC Sierra 1500
In ProductionThe Sierra nameplate as a standalone model launched for the 1999 model year. GMC has positioned the Sierra as the premium twin to the Chevrolet Silverado across all five modern generations.
Sierra 1500 Gen 5 (T1XX)
The current 5th generation Sierra 1500 launched for the 2019 model year on the T1XX platform, shared with the Chevrolet Silverado 1500 but with distinct GMC-specific styling and features. Introduced the MultiPro tailgate — a six-function folding tailgate exclusive to GMC that became one of the most-copied features in the truck segment. Engine options include 2.7L turbocharged four-cylinder, 4.3L V6, 5.3L EcoTec3 V8, 6.2L EcoTec3 V8, and 3.0L Duramax inline-six diesel. AT4 off-road and Denali luxury trims are key differentiators from the Silverado. Refreshed for 2022.
Sierra 1500 Gen 4 (K2XX)
The 4th generation Sierra launched for the 2014 model year on the K2XX platform alongside the Chevrolet Silverado. Features the all-new EcoTec3 engine family with direct injection and Active Fuel Management. The Denali trim received a distinctive billet grille and the 6.2L EcoTec3 V8 producing 420 HP. A mild hybrid eAssist system was available on select configurations. Maximum towing reached 12,500 pounds. Facelifted for 2016. Note: early AFM lifter issues are documented on some 5.3L examples.
Sierra 1500 Gen 3 (GMT900)
The 3rd generation Sierra launched for the 2007 model year on the GMT900 platform, earning Motor Trend Truck of the Year in 2007. The Denali trim on this generation featured a distinctive billet front grille and the 6.2L Vortec V8 rated at 403 HP — a major differentiator over the Silverado’s top engine. A 2-mode hybrid variant was introduced in 2009. The 2007–2013 generation is very common in the used market and shares all mechanical components with the Silverado of the same years.
Sierra 1500 Gen 2 (GMT800)
The first modern Sierra launched for the 1999 model year on the GMT800 platform, sharing all mechanicals with the Chevrolet Silverado while offering more premium styling and trim options. The GMC Sierra Classic was sold alongside the new GMT900 generation during the 2000 model year. The Sierra C3 upscale variant was introduced in 2001, becoming the Denali in 2002 — the first Sierra Denali. A 2003 mid-cycle refresh updated the interior and exterior styling and added E85 flex-fuel capability.
Sierra Gen 1 (GMT400)
The first generation to carry the standalone Sierra nameplate, built on the GMT400 platform shared with the Chevrolet C/K. Production spanned 1988 through 1998 — note that GMC ended the C/K nomenclature a generation ahead of Chevrolet, making this the first-gen Sierra while Chevy still called its truck the C/K. A mid-cycle refresh in 1994–1995 brought revised exterior styling and new safety features. Available with 4.3L V6, 5.0L, 5.7L, and 7.4L V8 gasoline and 6.5L turbodiesel engines.
GMC Sierra EV
GMC’s battery-electric full-size pickup, launched for the 2024 model year on GM’s Ultium EV platform. The Sierra EV launched in Denali Edition 1 trim first — the most premium configuration — before expanding to additional trims. Features a mid-gate system that opens between the cab and bed for extended cargo carrying. Available range up to 400 miles on the Denali Edition 1. Towing up to 9,500 pounds. The Sierra EV is distinct from the traditional Sierra in using a dedicated EV architecture.
GMC Sierra HD — 2500HD & 3500HD
In ProductionThe Sierra HD launched for the 2001 model year. All generations purchased — 2500HD and 3500HD, SRW and DRW.
Sierra HD Gen 4 (T1XX)
The current 4th generation Sierra HD launched for the 2020 model year with a completely new design featuring a bold front fascia distinct from the Sierra 1500. Powered by a 6.6L Vortec gasoline V8 (401 HP) or the 6.6L Duramax L5P turbodiesel (470 HP / 975 lb-ft) paired with an Allison 10-speed automatic. The AT4 off-road trim and Denali luxury trim are strong differentiators. The 3500HD DRW achieves class-leading towing over 35,000 pounds when properly equipped. AT4X added for 2023.
Sierra HD Gen 3 (K2XX)
The 3rd generation Sierra HD launched for the 2015 model year on the K2XX platform with updated styling. Powered by a 6.0L Vortec gasoline V8 or the 6.6L Duramax turbodiesel — the LML (2015–2016) producing 397 HP and 765 lb-ft, then the upgraded L5P (2017–2019) producing 445 HP and 910 lb-ft of torque. Regular cab models were discontinued on HD configurations after the 2018 model year. The Denali trim added significant premium content over the Chevrolet Silverado HD equivalent.
Sierra HD Gen 2 (GMT900)
The 2nd generation Sierra HD launched for the 2007 model year on the GMT900 platform. Note: the Sierra 2500HD launched for 2007 while the 3500HD debuted for 2007 as well with the new HD designation. Available with 6.0L Vortec gasoline V8, the 8.1L Vortec V8 (through 2007 only — dropped in 2007 redesign), and the 6.6L Duramax LMM (2007.5–2010) then LML (2011–2014) turbodiesel. The Allison 6-speed automatic paired with the Duramax is widely regarded for reliability and longevity in the used market.
Sierra HD Gen 1 (GMT800)
The original Sierra HD launched for the 2001 model year, introducing the 6.6L Duramax turbodiesel to the GMC lineup for the first time — paired with the Allison 1000 5-speed automatic. The LB7 Duramax (2001–2004) and LLY (2004.5–2005) are well-regarded for power and durability, making clean examples highly desirable in the used market. Also available with 6.0L and 8.1L Vortec gasoline V8 engines. 2500HD and 3500HD configurations in regular, extended, and crew cab body styles.
GMC Canyon
In ProductionGMC’s mid-size pickup. Replaced the Sonoma for the 2004 model year. All three Canyon generations purchased.
Canyon Gen 3
The third generation Canyon launched for the 2023 model year as a completely redesigned truck sharing its platform with the 3rd generation Chevrolet Colorado. Powered exclusively by the 2.7L turbocharged four-cylinder in multiple output levels (up to 310 HP / 430 lb-ft). Available only as a crew cab with a short bed. The AT4X is the hardcore off-road variant with Multimatic DSSV dampers. Towing capacity up to 7,700 pounds. The previous V6 and diesel options were discontinued.
Canyon Gen 2 (GMT31XX)
The second generation Canyon returned to North America for the 2015 model year after a three-year hiatus, significantly larger and more refined than the first generation. Shared the GMT31XX platform with the Chevrolet Colorado but with distinct GMC styling. Powered by 2.5L four-cylinder, 3.6L V6, or an available 2.8L Duramax turbodiesel — the first diesel ever offered in a GMC mid-size truck. The AT4 off-road trim launched in 2019. Facelifted for 2021. Discontinued in favor of the 3rd generation for 2023.
Canyon Gen 1 (GMT355)
The original Canyon launched for the 2004 model year on the GMT355 platform, replacing the Sonoma and sharing its architecture with the Chevrolet Colorado and Isuzu i-Series. Available in regular, extended, and crew cab configurations with 2WD and 4WD. Engine options began with a 2.8L four-cylinder (175 HP) and evolved through a 3.5L and 3.7L inline-five. A 5.3L V8 was added in extended and crew cab models for the 2009 model year. Discontinued after the 2012 model year, then revived for 2015.
GMC C/K — Classic Full-Size
ClassicBefore the Sierra nameplate, GMC full-size trucks were sold as the C/K series. All generations purchased.
GMC C/K Square Body
The “Square Body” generation GMC C/K, produced from 1973 through 1987. GMC officially called this the “Rounded Line” generation. Mechanically identical to the Chevrolet C/K Square Body but with distinct GMC styling including a crosshair grille on many models. The Sierra Classic and High Sierra trim packages were introduced on this generation. One of the most collectible GMC trucks ever built. Available in C1500, C2500, C3500, K1500, K2500, K3500 configurations. Strong and growing collector values.
GMC C/K Action Line
The “Action Line” second generation GMC C/K, produced from 1967 through 1972. This is the generation that introduced the Sierra name as a trim package in 1972 — the beginning of one of the most long-running truck trim names in history. GMC’s version features distinctive quad headlights and a crosshair grille compared to the Chevrolet’s single-headlight setup. Highly sought after by collectors. Any clean surviving example is actively purchased.
GMC C/K Gen 1
The original C/K generation for GMC, launched for the 1960 model year alongside the Chevrolet C/K. GMC trucks of this era featured distinct styling from their Chevrolet counterparts, with their own grille designs and trim packages. Available in C1500 (half-ton), C2500 (three-quarter ton), and C3500 (one-ton) configurations in 2WD (C) and 4WD (K) versions. Any surviving 1960–1966 GMC C/K truck has significant collector value.
GMC Sonoma & S-15
DiscontinuedGMC’s compact pickup before the Canyon. All generations purchased.
GMC Sonoma
The GMC Sonoma was the rebranded version of the GMC S-15, renamed Sonoma for the 1991 model year. Mechanically identical to the Chevrolet S-10, the Sonoma served GMC’s compact truck buyers through 2004 when it was replaced by the Canyon. Available in regular and extended cab configurations with 2WD and 4WD. Powered by 2.2L inline-four and 4.3L V6 engines. A performance variant — the GMC Syclone — was produced in 1991 as a turbocharged AWD sport truck and is now a sought-after collectible.
GMC S-15
The GMC S-15 was introduced for the 1982 model year as the GMC-badged version of the Chevrolet S-10 — GM’s first domestically-built compact pickup. Available in regular and extended cab configurations. Powered by 2.0L and 2.5L inline-four and 2.8L V6 engines. The S-15 Jimmy was the SUV variant. Renamed the Sonoma for the 1991 model year. The Typhoon — a turbocharged AWD performance SUV variant — was produced in 1992–1993 on the S-15 Jimmy platform and is a collector vehicle.
GMC Savana Van
GMC’s full-size van, the Savana 1500, 2500, and 3500 have been in production since the 1996 model year. The Savana is the GMC-badged twin to the Chevrolet Express. Used extensively in commercial fleet, delivery, passenger transport, and government applications. Available as cargo van, passenger van, and cutaway configurations. Powered by 4.3L V6, 4.8L V8, 5.3L V8, and 6.0L V8 gasoline engines. We purchase all Savana vans in cargo and cutaway configurations.
About GMC Trucks
GMC (General Motors Truck Company) has been manufacturing trucks since 1912, making it one of the oldest truck brands in the world. GMC is a division of General Motors and has always positioned its trucks as more premium alternatives to mechanically identical Chevrolet trucks. The Sierra consistently outsells many competitors and is typically the fourth or fifth best-selling truck in the United States.
GMC trucks are manufactured at the same General Motors facilities as Chevrolet trucks — Fort Wayne, Indiana; Flint, Michigan; Silao, Mexico; and Wentzville, Missouri (Canyon). The key differentiation between a GMC Sierra and a Chevrolet Silverado of the same generation lies in styling, trim levels, and exclusive features like the Sierra’s MultiPro tailgate and the Denali luxury trim — the most premium non-Cadillac vehicle in GM’s lineup.
GMC Truck Naming History
- 1912–1959 — Various GMC truck designations through the pre-C/K era.
- 1960–1987 — C/K series shared with Chevrolet. GMC’s versions feature distinct styling, particularly the signature GMC crosshair grille on many models.
- 1971 — Sierra name first introduced as a trim package on the GMC C/K — the beginning of the most important name in GMC truck history.
- 1972 — Sierra Grande trim debuts, elevating Sierra to a full luxury trim level.
- 1982–1990 — S-15 compact pickup alongside the full-size C/K line.
- 1988–1998 — Sierra becomes the standalone GMC full-size pickup name on the GMT400 platform, replacing C/K branding for GMC a generation before Chevrolet followed suit.
- 1991–2004 — Sonoma compact pickup (renamed from S-15).
- 1999–Present — Modern Sierra nameplate on GMT800 and successor platforms.
- 2001–Present — Sierra HD for 2500HD and 3500HD heavy duty configurations.
- 2004–Present — Canyon mid-size pickup replacing the Sonoma.
- 2002–Present — Denali luxury trim becomes the flagship of the Sierra lineup.
The GMC Denali — America’s Best-Selling Luxury Truck Trim
The Denali trim name was introduced on the GMC Yukon SUV in 1999 before moving to the Sierra in 2002. It has grown into the best-selling luxury trim in the truck segment — outselling all Cadillac truck models — and represents a significant portion of Sierra sales. The Denali commands a substantial premium over standard Sierra trims and includes premium interior materials, exclusive exterior treatments, and the most powerful available powertrain options. In the Sierra 1500, Denali includes the 6.2L V8 or 3.0L Duramax diesel as standard. The Denali trim’s popularity led to the creation of the Denali Ultimate trim for 2022 as an even more premium configuration.
GMC Truck Timeline
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