My right turn signal is flashing very fast. I did replace the bulb on 2002 GMC Envoy

The bulb that was burned out was replaced witht the same type of bulb but is still flashing very fast.

Asked by for the 2002 GMC Envoy
1 answer 1 comment
IS ALL THE LIGHTS STILL BLINKING IF YES, CHECK PINS INSIDE LIGHT BULB SOCKET..YOU MIGHT HAVE TO CLEAN THE PINS..
Thank-you. I'm not a mechanic-changed the bulb myself-but what are the pins? And how do I clean them?