My left turn sig lamp quits burning bulb is not bad. on 2005 Cadillac SRX

I can unplug bulb from socket and then plug bulb back into socket and this will work for a while socket looks good.Will removing power from bulb do the same thing. I have removed fuse and relay (No help)

1 answer 2 comments
Bad connection in bulb socket, replace the bulb connector.
OK thanks.