Where is the master cylinder resivor in a 2002 Chevy Tracker?

The master cylinder reservoir on a 2002 Chevy Tracker is located on the firewall, typically near the center and slightly towards the driver's side. It's usually a fairly easy-to-spot cylindrical or rectangular container with a cap. However, exact location can vary very slightly depending on trim level and options. If you're having trouble finding it, a quick visual search of that general area of the engine compartment near the firewall should help locate it. A repair manual specific to your year and model Tracker would give the most precise location.