If any one truck can be credited with solidifying America's fascination with modified pickups, it's the '88 Chevy/GMC C/K series. The totally redesigned trucks were a major improvement over the previous generation of GM trucks. The gasoline-engine of this C1500 210-horsepower (hp) 5-liter or 5.7-liter V-8, was an upgraded option. The C1500 came standard with a four-speed automatic overdrive transmission. With only slight variations, all C1500 versions averaged 16 to 18 mpg in the city, and 20 to 25 mpg on the highway. All 1988 C1500 trucks came standard with ABS brakes., ,