It's the same kind as a 2004 Red Line model.
There isn't one. You refill the coolant with by putting more dexcool (DO NOT USE THE GREEN STUFF (ethalene glycol) ) in the coolant overflow bottle.
There is no timing belt. Saturn Ion's use a timing chain.
Dexcool
R134
yes
regular green stuff
All Saturn Ions use Ecotec engines, which use a timing chain.
use a 10mm wrench and remove the battery from the trunk compartment, and replace it with the new battery
No, from talking to repair shops and a dealer about my own Saturn Ion-2, I have learned that it does in fact use an interference design.
The 1999 Saturn engine uses dexcool type coolant. This coolant is different form other types and cannot me mixed with another type.
For the 2.2 liter 2003 Saturn Ion:Fram CH9018STP S9018R