Equinox debuted for 2005 as a smaller, less-expensive midsize-SUV companion to Chevrolet's TrailBlazer. It shared its car-type platform with the Vue from GM's Saturn division, but has a longer wheelbase and body, and has steel body panels in place of Vue's plastic. Equinox seated five; no 3rd-row seat was offered. The rear seat slid fore and aft 8 inches to maximize passenger or cargo space. The one-piece rear hatch did not include opening glass. Equinox came in LS and uplevel LT trims, both with front-wheel drive or all-wheel drive without low-range gearing. A 185-hp V6 and 5-speed automatic transmission made up the sole powertrain. Traction control was standard on the front-drive LT, optional as part of the ABS option on the front-drive LS. ABS was standard on all but the front-drive LS. Curtain side airbags are optional. Available features include leather upholstery, heated front seats, satellite radio, and OnStar assistance.