GMC Sierra 3500HD generations

Every generation of the GMC Sierra 3500HD (2007–2026): 3 generations with photos, year ranges and full specs for 197 model-year trims.

Unverified

Fifth generation (T1 (GMTT1XX))

2020–present · 61 trims

Photo: 2020 GMC Sierra 2500 Denali HD, Duramax 6.6L, front 2.1.20 by Kevauto, CC BY-SA 4.0, via Wikimedia Commons

Unverified

Fourth generation (GMTK2HG)

2015–2019 · 16 trims

Photo: 2018 GMC Sierra Denali HD Duramax Crew Cab in Dark Slate Metallic, front left by Mr.choppers, CC BY-SA 3.0, via Wikimedia Commons

Unverified

Third generation (GMT900 (GMT912))

2007–2014 · 4 trims

Photo: 2011 GMC Sierra 3500HD 4WD, long box work truck, front left by Mr.choppers, CC BY-SA 3.0, via Wikimedia Commons

Related GMC models

• Sierra 1500 (1989–2026)
• Sierra 1500 Limited (2019–2019)
• Sierra 2500HD (2007–2026)
• Sierra EV (2024–2026)
• Sierra HD (1989–2006)