Eco warriors, look away now as these are General Motor’s new fleet of full-size SUVs for the American market. Still here? You’re looking at the 2015 Chevrolet Tahoe, long-wheelbase Suburban and its 2015 GMC Yukon, Yukon XL and Yukon Denali siblings.
Compared to their predecessors, GM claims that the new models have more efficient powertrains, improved aerodynamics and better overall refinement. All share the same body-on-frame underpinnings sourced from their latest pickup counterparts, the 2014 Chevrolet Silverado and GMC Sierra.
Under the hoods lie a 5.3 litre V8 EcoTec3 engine with direct injection, cylinder deactivation and continuously variable valve timing, offering 355 hp and 519 Nm of torque. The flagship GMC Yukon Denali gets a more powerful 6.2 litre V8 with 420 hp and 623 Nm, and both are mated to a standard Hydra-Matic six-speed automatic gearbox.
Official fuel consumption ratings have yet to be announced, but since they weight close to two and a half tonnes each, don’t expect them to be kind on the oily stuff. Or the environment. Still, much improved aerodynamics and a more efficient electric power steering guarantee that they’ll at least better the outgoing models’ 6.3 to 7.2 km per litre ratings.
The Chevrolet pair gets its own looks, with more horizontal elements compared to the GMC’s more vertical design. The Suburban has a 355 mm-longer wheelbase compared to Tahoe, and is 500 mm longer overall. Both have seven seats, with the Suburban offering more legroom for the third-row passengers and almost twice the cargo room behind.
It’s the same story with the more premium GMCs; the XL obviously the larger of the two. The Yukon Denali is essentially range’s top trim level, and gets unique design cues on the outside (more chrome everywhere) and a more luxurious cabin (standard noise-cancellation tech and magnetic ride control).
2015 Chevrolet Tahoe
2015 Chevrolet Suburban
2015 GMC Yukon XL
2015 GMC Yukon Denali