In addition to numerous recalls, my 08 Acadia is having additional failures; instrument cluster shorting out, power steering leaks, water pump failure, etc. How does one declare that a car is a lemon? What is GMC or the dealer obligated to do about it? I'm not sure how much money I want to throw into this car since it has 115,000 miles on it. I have seen forum posts about 2008 models that were declared lemons but I don't know what that means or how to invoke the lemon law. Does it vary by state (I am in Indiana)?