It is either on or close to the receiver dryer which is the shiny can in the right rear of the engine compartment. GoodluckJoe
Autozone.com has the diagrams you need
The cooling system diagram for a 1996 Pontiac Sunfire can be found in its manuals. It can also be obtained as a print out at an auto part store.
pontiac350enginebuild.blog.friendster.com/
You can find the 2005 Pontiac Sunfire air filter the inside of the air filter housing.. The air filter housing will be in the engine compartment.
If you pick up a Haynes or Chilton manual, you'll find all of the fuel system test procedures and requirements. FriPilot
You can find quite a bit of info about Sunfires at this website http://consumerguideauto.howstuffworks.com/1995-to-2005-pontiac-sunfire-6.htm FriPilot
My 96 Sunfire has no red cap, it has a regular dipstick. You'll want to find a small funnel. The fluid goes where the dipstick is supposed to be. I would also go to the parts store and get a new dipstick.
I couldn't find anything specific in my Haynes manual, but from what I've seen by snooping around Google and by looking at my own tach, it seems that 800RPM is in the ballpark. FriPilot
The very bottom of the engine. Plug is at rear.
http://www.mobileinformationlabs.com/1WiringCodes$12.95.htm
You can GOOGLE Pontiac Door Lock and find a lot of hits. Try this one; http://www2.partstrain.com/store/ FriPilot
Im trying to find out the same thing