The redesigned 1970 Riviera GS featured a new vertical grille between four open headlights, now pushed to the side of the grille. Fine grille bars swept downward behind the front bumper and the rear bumper was redesigned altered for larger taillights. The Riviera’s sides could be accented by long sweep-spears and the rear fenders smoothed off to accept skirts, if you so desired. Vinyl roofs were common.
A new engine developed 370 bhp from 455 cid and the GS model could do 0-60 mph in 7.9 seconds, on its way to 125 mph. Standard Riviera equipment included the 3-speed Turbo-Hydramatic transmission, dual exhaust, power steering, anti-theft steering lock ignition on the collapsible tilt column, power brakes, two-speed electric wipers with washers, safety buzzers and warning lights, upper and lower dash safety pads, console gear option, walnut paneling on the dash and full carpeting. Carpeted lower door panels were optional.
Other Riviera options included air conditioning, power windows, power front disc brakes, four- and six-way power seats, tinted glass, cruise control, wire wheel covers, 5-spoke chrome wheels and AM/FM stereo.