One problem related to battery dead has been reported for the 2008 Chevrolet Impala. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Impala based on all problems reported for the 2008 Impala.
I have a problem with removing key from ignition when the car is in park. I have research the data and there are several you tube videos on this same problem. . . It is a faulty wire (purple) that shifts with the gear and cause the wire to be worn and make the keys unable to be removed from the ignition. This problems happens with the 2006, 2007 and 2008 Impala. This cause the battery to die and is a six hundred dollar job should it be taken to a dealer for repair. It should have been a recall. Also, I have taken the car to a local dealer for the recent recall, thinking that may have resolved the problem. . . Epic fail. Thanks.