2026 GMC Terrain Elevation vs. AT4 — what’s the difference? The Elevation and AT4 give you two different takes on the 2026 GMC Terrain. In this quick comparison, we break down some of the key differences shoppers should know before choosing between them. The Elevation leans more toward everyday comfort and style, while the AT4 adds a more rugged look and off-road-focused design. Watch the full video, then tap the link in our bio to browse our current 2026 GMC Terrain inventory at Dave Sinclair Buick GMC in St. Louis. #2026GMCTerrain #GMCTerrain #TerrainElevation #TerrainAT4 #GMCTerrainAT4 #GMCComparison #SUVComparison #StLouisGMC #DaveSinclairBuickGMC