as an option (with the 3.8L V6). Powertrain Upon its 1990 release, the Lumina APV was powered by a 3.1L V6, producing 120 hp; a 3-speed automatic was the sole transmission offering. For 1992, a 3.8L V6 became an option, introduced with a 4-speed automatic. For 1996, both engines were replaced by a 180 hp 3.4L V6; the 3-speed automatic was discontinued. Body design Exterior Distinguished by its large windshield and sloped hoodline, the Lumina APV was of a "one-box" design, a configuration similar to the Ford Aerostar and Renault Espace. In line with the Aerostar and Chrysler minivans, the Lumina APV was configured with a single sliding door and a rear liftgate. Closely matching the 1987-1990 Chrysler "Grand" minivans in length, width, and height, the Lumina APV is nearly lower than the Astro and narrower. Coinciding with the use of a galvanized steel spaceframe (in place of a conventional unit-body design), the Lumina APV was fitted with composite plastic (SMC) body panels. Developed for the Pontiac Fiero and later expanded in use for the Saturn SL, the manufacturing technique largely eliminated the threat of corrosion and damage from minor dents and dings. The manufacturing also allowed GM to style the Lumina APV separately from its Pontiac and Oldsmobile counterparts at low cost; each model line is externally distinguished by its hood and front fascia. Along from its front fascia, the Lumina APV is distinguished from its Pontiac and Oldsmobile counterparts in the styling of its roof. From the B-pillar to the windshield, the roof was painted black; on examples with tinted glass, this design was to mimic the style of the glass roof from the 1986 Trans Sport concept. The Trans Sport had its entire roof painted black (with the exception of a band joining the B-pillars) again mirroring the glass roof of the 1986 concept, whereas the Silhouette had body-color A-pillars and black B-pillars. Two-tone versions of the Lumina APV were available; an early configuration featured a blacked-out upper body. For 1992, Chevrolet standardized the folding sideview mirrors of the CL trim. For the 1994 model year, the Lumina APV underwent an exterior revision, shortening the front overhang by nearly three inches. Largely intended to visually shorten the angle of the hoodline, the Lumina Minivan (dropping the APV suffix) was given a new hood, larger grille, and much larger headlights (shared with the Pontiac Bonneville SSEi). 15-inch wheels