A 2WD model joined the lineup interim 2005, offering customers the Silverado SS's performance at a great value.

Introduced interim 2005, the Silverado SS is now available in a two-wheel drive configuration. The new model has an 8,100-pound (3,674 kg) towing capacity and broadens SS performance choices by offering customers traditional rear-wheel drive performance at a great value.

The Silverado SS is based on the 1500 Series Extended Cab with a short bed. It is powered by a high-output version of GM’s Vortec 6000 V-8, which pumps out 345 horsepower (257 kw) and 380 lb.-ft. (515 Nm) of torque. The engine is connected to a Hydra-Matic 4L85-E four-speed automatic overdrive transmission equipped with a 3.06 first gear and 0.70 final gear, which transfers power to a 4.10-geared locking rear axle for rapid acceleration and relaxed highway cruising.