My build date is 2009 on my 2010 SS.
Up to 2017, it mostly sat garaged with no battery tender and only had 16k miles on the clock.
Now it gets driven more and has 51k miles.
It's just now showing signs of getting weak.
It's starting slower and on crank, stability link flashed yesterday.
AC on, radiator fans are running slower than normal causing the engine to get hot sitting in traffic.
But...
Very impressed with the life of the OEM battery and will replace with another GM battery,
