The first compact truck from the Big Three automakers was the rebadged Isuzu KB sold since 1972 as the Chevrolet LUV, and Ford quickly responded with the Mazda-built Ford Courier the same year. However, the 1973 Arab oil embargo forced GM to consider designing a domestically produced compact pickup truck. As usual, parts from other GM chassis lines (primarily from the GM G-body intermediates) were incorporated. Track width was similar to the former GM H-body subcompacts (Vega/Monza). The first S-series pickups were introduced in 1981 for the 1982 model year. The base engine (manufactured in Japan and imported) was a 1.9 L Isuzu four-cylinder (RPO LR1) shared with the LUV and Isuzu P'up, with a 2.8 L V6 as an option. The Chevrolet and GMC models were identical apart from the grille, tailgate and assorted insignia. An extended cab called the "Club Coupe" and "Insta-Trac" four-wheel drive were added the next year along with two new engines - a 2.0-litre four-cylinder engine (RPO LQ2) from the J-platform automobiles along with an Isuzu 2.2 L (RPO LQ7) four-cylinder diesel engine.