The 2003 Chevy Tracker (also known as the Suzuki Vitara in some markets) uses a serpentine belt driven by a single pulley system. There isn't one single "pulley" but rather a
pulley system located at the
front of the engine. This system includes the crankshaft pulley (the largest one), and pulleys for the alternator, power steering pump, and air conditioning compressor (if equipped). They're all connected by the serpentine belt.
To be more precise, you'd find them nestled together near the engine's timing cover, generally towards the bottom-front of the engine compartment. You'll need to look closely, possibly with a flashlight, as they're partially obscured by other components.
