It sounds like your "Timing Belt" broke. Have it checked, if it's broken it should cost around $200 to have it replaced on your six cylinder L300.
The 2005 Saturn L300 does not have an inertia switch ¹. Instead, here are the locations of the fuses and relays in the Saturn L300 ²: Cigar lighter (power outlet) fuses in the engine compartment Fuse boxes under the instrument panel on the right and left side of the vehicle Engine compartment fuse box
It could be a couple of things, the ground wire to the motor may have become disconnected or over heated and melted or the positive wire for the blower which is located behind the radio has melted, which seems to be a problem with Saturn and was a problem with my 2000 Saturn ls. The wire is connected to a harness right behind the radio and is yellow.
have your fuel injectors cleaned
crank sensor is bad
If you changed the battery on a Saturn S-Series 201 and the car will crank over, but won't start, the security system needs reset. Do this by inserting the key and turning it halfway. Leave it this way for 10 minutes before trying to start the car.
Saturn is the planet with over 40 satellites, of which Titan is one of the largest.
Saturn. Venus has none, Saturn has over 60 moons.
nothing
Saturn
Rings. Saturn has many bright rings and over 60 moons.
Rings. Saturn has many bright rings and over 60 moons.
If the vehicle has a security feature check the fuse under the hood. My 2001 SL1 had that problem. its like a 30 Amp fuse.