Chevrolet Repair: 2003 Chevy Venture electrical problem, amp fuse, left blinker

Question
Hi. Thanks in advance for taking the time to look at my question.  I have a 2003 Chevy Venture.  We purchased it in January.  Recently, it has been having some electrical issues.  The radio has been going out frequently by blowing the 10 amp fuse.  I have put in a 15 amp fuse, and those seem to last a little longer, but I have blown one of these as well.  I do know that this is probably not the ideal way to deal with this.  Also, the left blinker is blinking very fast.  The brake light on the left side is out all the time, and the daytime running lamp on the front as well.  I think they are all on the left, but I am not sure.  I would have to check again, but I am not sure it is important or not.  I have had the bulbs changed, and that is not the problem.  What is the problem?  Am I going to be able to fix it, or do I need to take it in?  Is this going to be monumentally expensive, if so?

Thanks again for your time, and if you have any other questions for further clarification, I would be happy to provide answers.

Answer
You have some issues.  It does matter if they are all on the same side of the van.  My guess is a ground is bad.  This is causing the van to draw more current than it should to the circuitry on the left.  Possible a stray high voltage current is getting into the wrong system.  Did you have any work done where a screw could have pierced a wire it shouldn't have?  New radio?  New alarm?  

Unfortunately the electrical issues can be tough to diagnose, especially online.  It can be pricey.  Look for a electrical shop rather than the dealer.  They usually charge hourly.  Let them go only until you cannot afford anymore, or they find the problem.  The dealer may know the problem, but rip you off.