Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
I am sorry for the long wait
when it acts up it is just the drivers side rear bulb not working and the passenger side works fine every time ?
do you have a multi meter on hand ?
if the passenger sides works all the time and the issue is just the drivers side back up bulb doing this and the bulb is new and the connections in the socket for that bulb are good this issue should come down to a bad ground for that bulb the black wire which is grounded on the left rear body mount behind the left rear tire on the frame being bad or loose or not clean and tight
if that checks out good and could be tested for a good ground when it is acting up then the only thing left is the light green wire from the bulb to the connector located very close to that ground it should be a 5 terminal connector
but in a nut shell it is one of those 2 wiring or ground or terminal connection being the issue if the bulb is new and the bulb connections are good