1. Consult your owner's manual: This is the most reliable source. The manual will have diagrams showing the location of all fluid dipsticks, including the engine oil dipstick.
2. Look near the engine: The dipstick is usually yellow or bright orange, and is often located near the front or top of the engine, typically with a handle or ring. It might be tucked between components, so you may need to use a flashlight.
3. Check online forums: Search for "[your Chevy Tracker year and engine] dipstick location" on forums like Chevy Tracker owners' clubs or general car repair forums. You might find pictures or descriptions from other owners.
Without knowing the specific year and engine of your Chevy Tracker, it's impossible to give a precise location.