What Should I Check When I Buy A Used Car?

2002 Tahoe Switch Dead battery in my 2004 Subaru  Just bought a 2008 Acura and it dies 2014 GMC Acadia why does my mirror and window not work with headlights on? Escape with misfire 1957 Chevy 283 or 265 heads What do we do on Under The Hood? Durango bad gas tank valve or not Toyota 4Runner why does my car keep cranking by itself?