Where is the secondary air injection system located on a 2001 Chevrolet s10?

The secondary air injection system is located on the driver's side of the engine compartment, near the air filter housing. The system consists of an air pump, a check valve, and an injection manifold. The air pump is driven by a belt from the engine, and it pumps air into the exhaust system. The check valve prevents air from flowing back into the air pump, and the injection manifold directs the air into the exhaust ports.