something keeps running after turning off.I have to open and close door to shut it off
Little more information please? Sound like a fuel pump..?? or just a bit of elaboration please..a sound?
perhaps you're connecting dots where no connection exists...I'm suggesting that your door ain't got nothin' to do with it....one disturbing little feature is that the system ground is marginal. and closure of the door "gooses" the connection~
you know engine cooling fans WILL continue to run until a safe shut-down temperature is reached~(on some models)~
Also some of the newer HVAC systems are live for a few minutes even with the key turned off. You could be hearing servo motors and door returning to start positions for the next cycle when you start the car.
Looking for a Used LaCrosse in your area?
CarGurus has 20,106 nationwide LaCrosse listings starting at $1,495.
Search Buick LaCrosse Questions
Buick LaCrosse Experts