It's the plastic cap on the front of the engine. either a 26mm or 30mm socket to open it up.
4.5-5
The oil filter location on a 2005 Sunfire 2.2 ltr engine is on the left side of the engine (drivers side)just under the oil cap. It takes a 24mm hex head cap. its just below the valve cover on right side in a canastor
on the firewall side of the engine...passenger side
4.5 quarts
On the oil pan near the top. Under the engine. About middle of the car.
on the 2.4 its to the left of the starter above the oil filter
just behind the right front wheel ( passengers side)
Go to an auto parts store and ask them.
Trick question there is no 2004 Pontiac sunbird. 1994 sunbirds which is the last year have the oil filter by the right side wheel well, this is similar for the "Sunfire" of later years.
just above the oil filter
The very bottom of the engine. Plug is at rear.
The Oil Filter is on the top of the engine, to the left of the valve cover. It has a plastic cap that can be wrenched off. The Oil Filter is not a sealed filter that you are used to seeing. It drops in where you removed the black cap.