The Suburban 2500 is available in LS and LT trims in both two-wheel drive or four-wheel drive. It can seat up to nine passengers in its three rows of seats. The 2500 comes standard with a 352-hp 6.0-liter flexible-fuel V8 engine mated to a 6-speed automatic transmission. All-disc anti-lock brakes, traction control, side curtain airbags and GM's StabiliTrak electronic stability system with rollover mitigation are standard. For 2010, the standard 6.0-liter V8 becomes flexible-fuel. Seat-mounted side air bags are now standard on all trims. New audio systems feature audio-DVD and USB ports.