Replace back up lights

Have someone step on brake pedal and check all rear bulbs. Inside your trunk and under the lining you should be able to open an access door that allows you to remove the bulb circuit panel & replace the buls as necessary.

this happed to me after i paid three hundred dollar to fix the problem and that didn't work for me so i got a can of electronic circuit cleaner and sprayed the hell out of the socket and i haven't had a PROBLEM SINCE YOU CAN FIND THIS CLEANER AT ANY AUTO STORE.