My car is a 91 5.7 with VATS with alarm. When I would go to start my car sometimes it wouldn't start and then 5-10 minutes later it would. Since then I have added hedders which i dont know if this is the culprit, but now I go to start my car just about every 2-3 times and it wont start for 30 minutes to about 2 hours. Just today I went to go start my car for work and nothing, it hasn't started all day. It does not crank, all my lights on the dash light up and my temp gauge goes up and my voltage when i turn the key, this happened when my car would start after 5-10 minutes too, now it just takes forever to start or like today, it hasn't started. Please help me out guys.

 

Sounds like a vats problem. My friend has a 91 GTA that just went through the same problems that you are describing.

 

Does anyone know what has to be done to fix this?

 

My car does not start. The only lights on the dash after a few seconds are, service engine soon and security. Is this an indication of vats?

 

Check your codes and see what comes up. Check the tech articles on this site for info on how to disable vats.