Car check engine light comes on and will later turn off. Now the car won’t start
The check engine light kept coming on because something was wrong. When you ignored it the problem eventually got bad enough that the car wouldn’t start. The car’s computer stored one or more codes when the check engine light came on. Have a mechanic read the code(s) and he can give you an idea what’s wrong.
Here’s how to retrieve the codes on your OBDI Buick.