Hello, I am new to this site but I have a question that hopefully someone can answer. I have a 2010 Camaro and today the DIC gave a message of check left rear turn signal lamp. I immediatley assumed it was the bulb had blown and stopped at the local auto store and replaced the bulb. Much to my dismay when I got back in the car the message came on again. The turn signal is working. what else could it be???