Identical except for badging, Chevrolet S10 and GMC S15 compact pickups held 4-cylinder or V6 engines. On-demand, part-time 4-wheel drive was available on all three sizes: short bed (108.3-inch wheelbase and 6-foot cargo bed), long bed (118-inch wheelbase and 7.5-foot bed), or extended cab (123-inch wheelbase and 6-foot bed). A 3-place bench seat was standard, with bucket seats optional. Extended-cab models also have two folding rear jump seats. Rear-wheel antilock braking had arrived for 1989. An optional electronic instrument cluster used vacuum-fluorescent displays.