Refinement, though markedly improved, shines less brightly in Suburbans than in shorter-length GM
trucks. With four-wheel drive and the 6.0-liter V8, the automatic transmission sometimes seems to shift...
... a little abruptly, and there is noticeable engine noise under harder acceleration. However, ride comfort is considerably more appealing; it's pleasantly absorbent and cushiony on smooth surfaces and copes reasonably well with bumps. Acceleration is vigorous from a standstill, if less so to pass or merge. The Suburban feels more truck-like than smaller SUVs and, on the expressway, it behaves admirably.