where to go to get tune up on 2000 Cadillac Seville SLS

my car suddenly dies even while driving on highway i need to take it somewhere and find out what needs to be fixed. i live in scappoose oregon and want to know the best place close to me i should take it

Asked by for the 2000 Cadillac Seville SLS
you may need your crankshaft position sensor change.