Your going to need 6 milk bottles, a tuning fork, a bottle of lotion, and a hammer.
disconnect neg and pos of battery for 1 minute
5w15
stick a screwdriver down the back side and pry up lightly while pushing up from the bottom with your other hand
If it is a 6 cylinder it will cost upwards of $300.00 because you have to remove the intake to get to the spark plugs..
My 2002 Saturn L300 was doing this also, it was the BCM (Body Control Module). Cost about $600 to fix at the dealership
The battery that fits in a 2003 Saturn L300 is 10 and 3/4 inches in length. The width of the battery is 6 and 7/8 inches and the height is 7 and 1/4 inches. The battery needs to be a 12 volt battery that is a side post battery.
2002 L-series used a belt.
6.5" 3 way speakers with reiangular screws.
My 2002 Saturn 3.0 L, v 6 takes 5 quarts.
It bolts to the top of the intake manifold. It should have to large plugs on top of it
http://www.edmunds.com/ownership/parts/articles/120189/article.html This web site dose not provide an owners manual for a 2002 Saturn l300
You have driven 69427 miles, or 6942 ( and 7 tenths )