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The 2003 Silverado 1500 Extended Cab is a 4-door, up to 6-passenger full size pickup, available in 12 trims, ranging from the 2WD Short Box to the 4WD LT Long Box. The 2003 Silverado 1500 Extended Cab's closest competitors include the Dodge Ram 1500 Quad Cab 4X2, the Ford F-150 SuperCrew 4x2, and the Toyota Tundra 4X4.
Upon introduction, the 2WD Short Box is equipped with a standard 4.3-liter, V6, 200-horsepower engine that achieves 15-mpg in the city and 20-mpg on the highway. The 4WD LT Long Box is equipped with a standard 5.3-liter, V8, 285-horsepower engine that achieves 14-mpg in the city and 18-mpg on the highway. A 4-speed automatic transmission with overdrive is standard on both trims.
The 2003 Silverado 1500 Extended Cab is freshened for 2003.