The Pontiac Sunfire's engine oil dipstick is typically located
on the top of the engine, near the front. It's usually a yellow or bright colored handle sticking up from the engine valley. However, the exact location can vary slightly depending on the year and engine type of your Sunfire.
To be sure, consult your owner's manual. It will have a diagram showing the exact location of the dipstick. If you don't have the manual, you can often find a digital version online by searching for "[your Sunfire's year] Pontiac Sunfire owner's manual" .
