Found a fix for this. Don't know if it has been documented as of yet.
The problems with 3 vehicles:
2004 GTO - When I placed the LED into the dome maps they work great as long as the door was open, RAPs on, the car was running or key was in acc. position. Once the RAP's when out the bulbs were dimly lit, like 5%.
Cavalier & Cobalt - When I placed LED's into the map lights the bulbs would still light up just a little. I would say 5%. So I had to take one out and put in a regular bulb.
The solution I tried was to order Can Bus LED and they worked. The balt has 2 in the map lights and they don't stay on. In the GTP all of the lights work perfectly now.
Has anyone tried the Can Bus for the turn signals to eliminate the hyper flash? I am going to order a set and try them.