Y'all have to keep in mind, that are cars are burdened with a crap load of electronics.
It should also be stated, and why they did this is beyond me (except for maybe to please the penny pinchers) but FMC supplied at least the SHO's with a "medium duty" rated battery.
Which on average, generally only last 3yrs.
Given the amount of electronics once again, it's no wonder most '10/'11 owners are experiencing these failures at this point in time.
"Sent while on the road, burn'n meth, screeching tires, winding out the gears, & push'n the twins"