Yes altough you'll need different bolts
You need to remove the plastic panel at the base of the windscreen the filter is located under there.
Believe it or not both cars have the same chassis, so no problem size wise, as far as i know you'll need to fit longer bolts to your brava which you'll get at dealership
You car takes a group 35 battery.
12 volt.
If your brava's idle is going hunting the ICV could need cleaned or replaced. It could however be indicative of more serious problems that I'm not confident enough to discuss. Have you tried resetting the ECU?Simply disconnect the battery overnight, then reconnect in the morning. drive normally for 100 miles after doing so as the ECu will be learning how you drive. If you boot it everywhere, it'll expect that all the time, and not perform great when you potter about slowly. the opposite applies if you drive in a 'grand-dad' fashio (sorry all the granddaddies out there! you know you rock really) Buzzwww.fiatboo.co.UK (site for all bravo brava and marea related matters)
Under the battery tray. You need to remove the battery and battery tray to gain access.
Yes 2001 and later have electric fuel pumps. They need battery voltage to work.
Replacing a battery in a 2001 Chevrolet Tahoe is very easy to do. You will just need to take off the battery cables off the battery and put them to the side. Remove the old battery and replace with the new one. Put the cables back on the correct posts.
if its a new battery then you need to replace your alternator. It basically recharges your battery while the vehicle is running.
The battery is located inside the trunk on the right hand side. You need to remove the cap first.
Need to check the battery conections and the starter wires and starter.