One problem related to check engine light on has been reported for the 1996 Buick Regal. The most recently reported issues are listed below.
Car broke down 2 days after I bought it, it broke down on the way to the shop. They kept the car for two days to fix it and I received it back. The next morning, the engine light was on, and it continues to be on, dan nelson network refuses to take the car back, and expects full payments on a vehicle that does not run properly.