OK,,,I have a 01 Deville limo,,@115,000 miles on it ,,,Love the car,,,At 100,000 miles hade the plugs changed,,,left the dealership and the service engine light came on and will not go off,,,now both brake warning lights come on,,,some times go off after I restart engine. Also it always says check coolent level. It is full. I saw another 01 deville limo,,,samething on his. What is going on? It runs fine.

 

just wondering, why you didnt immediately trow it in reverse and ask the dealer to fix what they mess up?