Vehicle Highlights

GM's best-selling vehicle and the nearly identical GMC Sierra had been redesigned as early 1988 models. Both came in three series: 1500 (1/2-ton), 2500 (3/4-ton), and 3500 (1 ton). "C" pickups are 2-wheel drive, while "K" designates 4-wheel-drive models. Short-bed trucks (1500 series only) rode a 117.5-inch wheelbase and had a 6.5-foot cargo bed. Long beds, in all three series, had a 131.5-inch wheelbase and 8-foot bed. Extended-cab pickups rode a 155.5-inch span with 8-foot bed, or 141.5-inch with 6.5-foot bed. Antilock rear brakes were standard. Base engine was a V6, but a broad range of V8s were available, including a diesel. Sportside trucks (short bed only) had flared rear fenders; those with regular fenders were called Fleetside. A 454 SS muscle truck arrived in 1990, with a performance/handling package.