Chevy Chase checks into rehab.

Actor Chevy Chase has checked himself into rehab for alcohol-related issue. The National Lampoon's 'Vacation' star is an in-patient at Hazelden Addiction Treatment Center in Minnesota, a representative for the actor told People magazine.Chase checked himself in for an alcohol-related issue which his representative calls a 'tune-up,' adding that the actor 'wants to be the best that he can be.' The 72-year-old star has previously been to addiction treatment. The actor is currently filming 'Dog Years' with Burt Reynolds.