I've only gotten that icon once. i attached a amp to the front speakers, causing signal interruption(more like Chevy mixing up wiring diagrams) and locking the stereo and the dash... icon just means your radio isn't giving the right signals or you jacked another radio from another cobalt. each stereo head is set for that car only. dealers can reset the stereo head unit to match.
Check engine light. Should be able to take it to AutoZone and they'll put their reader to it to tell you what's going on with your engine.
It means there is a problem with either one that comes on.
Not 100% sure but it sounds like it's a check engine or service soon warning light.
A wrench icon appears on your cars dash when the engine needs attention.
double click on the icon
click on this icon in the bottom right task bar
It's an image that appears on dash when engine has a problem.
I would think that the skidding car icon would be to alert you to a traction control problem..
You have locked it and can't delete it only if you unlock it you can delete iy
It should only flash when the doors are locked and the alarm is armed.
The red battery icon is an indication the charging system is not functioning properly. The red water icon is an indication the cooling system is overheating.
To unlock layer press padlock icon on top of layers stack on LAYERS palette, when padlock icon on right side of layer is gone do what you want to do with that layer.