2000 Brick Lesabre will not start so I bought a new battery and everything was okay. Several days later it would not start again. Everything seems to be okay, started, battery, cables, ect. It do not even make a sound when I try to start it. Sometimes I can jump it and sometimes not.

So.... when the car wont start, do the lights on the dash light up when you turn the key on? will the headlights operate? If the battery is good and the connections are good I dont know how jumping it with jumper cables is going to work, unless the starter is bad. When it wont start, have someone hold the key like you are cranking and rap on the starter with a hammer, ect. if it starts then, replace the starter. So.... when the car wont start, do the lights on the dash light up when you turn the key on? will the headlights operate? If the battery is good and the connections are good I dont know how jumping it with jumper cables is going to work, unless the starter is bad. When it wont start, have someone hold the key like you are cranking and rap on the starter with a hammer, ect. if it starts then, replace the starter.