while trying to find a 12V power source to to test my amp i crossed the pos and neg on the light in the back of my gd 3 and pop my radio, and interior lights dont work. also my power locks work but not my key fob ? i checked all the fuses and they re all fine.

 

On the GE, I assume the GD has this as well, there are some fuses built into the positive battery clamp. They are visible under clear plastic windows. Unfortunately I don't think they are replaceable. The entire clamp must be replaced.