GMC Sierra HD generations
Every generation of the GMC Sierra HD (1989–2006): 2 generations with photos, year ranges and full specs for 191 model-year trims.
Unverified
GMT800
1999–2006 · 7 trims
Photo: 2006 GMC Sierra 1500 Nevada Edition, Front Left, 09-06-2021 by Elise240SX, CC BY-SA 4.0, via Wikimedia Commons
Unverified
GMT400
1988–1998 · 24 trims
Photo: 1991 GMC Sierra 1500 SLE in Catalina Blue & Light Blue Two-Tone, Front Right, 07-27-2019 by Elise240SX, CC BY-SA 4.0, via Wikimedia Commons
Related GMC models
- Sierra 1500 (1989–2026)
- Sierra 1500 Limited (2019–2019)
- Sierra 2500HD (2007–2026)
- Sierra 3500HD (2007–2026)
- Sierra EV (2024–2026)