For 2001, Silverado adds even more power, convenience and durability. All extended-cab models now have two auxiliary rear doors, rather than just one on the curbside. Extended-cab 1500s with four-wheel drive are available with a Pro-Tec fully composite box that's virtually impervious to dents or corrosion. OnStar is available on newer LT models. Finally, the 6.0-liter V8 that is standard in 2500 models has been given aluminum heads and more aggressive valve timing, for a nice, round 300 horsepower at 4400 rpm, and 360 pound-feet of torque at 4000. Next Page