Cadillac Repair: 1990 cadillac deville wont start, cadillac deville, key system

Question
I have a 1990 cadillac deville and recently I am having trouble getting it to start. Sometimes it will start up just fine and then if you turn it off and try to restart it it does nothing. It wont even turn over. More often now it wont start at all. This is getting more and more frequent and this car is my work life line and I dont know what is wrong! Please help! -Tiffany

Answer
You have a fault in the security PASS-KEY system. If you have a duplicate key see if this resolves your problem. Your most likely fault is the PASS-KEY MODULE. You will need several pictures with directives of which can't be done on this website which only allows one picture. as this website is not mine,  You will have to e-mail: onlineautohelp@msn.com in order to obtain the information.