How To Repair AC and Winning A Car

1. How do you add cruise control to a car. Crown Vic and others.  2. Should I change my transmission fluid before a trip? 3.Can I block off my rear ac and fix my air conditioner? 4. 2000 Chevy 3500 1 ton dually why does my rear fuel tank not work? 5. 2013 GMC Sierra Why does steering have no assist? 6. Winning a new car!