Corporation on 2 March 1987. At the time AMC was already working on designing a replacement for the antiquated SJ platform. Chrysler had other priorities, and although the Jeep J-Series pickups that shared the SJ platform and directly competed with Chrysler's Dodge Ram pickups were discontinued in 1988, Chrysler left the Grand Wagoneer largely untouched over its first few years overseeing Jeep production, and even continued to build the model with the carbureted AMC V8 instead of its own (arguably, more modern) fuel-injected V8. Year-to-year changes were minimal. At the time of Chrysler's purchase, customer demand for the Grand Wagoneer continued to be steady, and it was a very profitable model generating approximately five to six thousand dollars on each unit. The 1989–1991 model years are considered the "best of the breed" due to a number of upgrades. These include upgraded wood siding and modernized aluminum alloy wheels that lost their gold-colored inlays in favor of gunmetal grey metallic. Chrysler also introduced an electrocoat primer for better rust proofing and all exterior colors were now applied in a two-stage base-clearcoat system. In 1988, Jeep's first full year under Chrysler, 14,117 Grand Wagoneers were produced. Many improvements were made for the 1989–1991 model year series, including a quality replacement for the earlier, leak-prone air conditioning compressor, the addition of the visually identifiable rear wiper/washer assembly, as well as a general improvement in fit and finish. An interior overhead console, taken from Chrysler's popular minivans, was also added. This functional console featured much brighter map lights, an outside temperature sensor and compass, a storage compartment for sunglasses as well as an infrared remote-controlled key-less entry system. The last three model years also featured several new exterior paint colors and the tan interior color was replaced with a lighter color that Jeep called "sand". The "new" exterior colors included a hunter green metallic that was only available in the 1991 model year and is the paint color of the 1991 Grand Wagoneer in the Chrysler museum, as well as the color of the very last Grand Wagoneer ever made. Discontinuation The Wagoneer enjoyed one of the longest production runs of any Jeep product. Despite its combined fuel economy of only 11 miles per gallon, its powerful 5.9 liter V8 engine and high towing capacity, and the fact that unlike most competitive full-size SUVs of the era it had four doors, made the Grand