Stop what you are doing & do this step 1st!!! Open your outside panel for the fridge. Look for the exhaust stack with is probably on the right side. Look for several wires going to the stack (probably red). In between the 2 wires is a small resetable circuit breaker. Push it with your finger & then go in and check to see if the interior light comes on when you open the door. If it does you have solved your problem. This is a common problem if the fridge is out of level & this circuit breaker prevents it from over heating & damaging the unit.
2001 Chevy Silverado
2011 Rockwood Roo 233S