These are two separate issues. First the reverse lights could just be a fuse. I attached the wiring diagram. We need to check fuse 27 to see if it is blown. If not, then we need to put the vehicle in reverse and start testing through the circuit to find where we don't have power any longer. Once we find that point we know what the issue is.
As for the turn signals working some times. This is a pretty common issue with the flasher. I included the diagram of the fuse box. We need to replace the indicator flasher C2047. What happens is the contact inside the flasher fail and some times it makes contact and sometimes it doesn't which gives you the intermittent operation.
Let me know if there are questions and we can go from there. Thanks
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Friday, April 3rd, 2020 AT 6:26 PM