I've had a this early model 2012 since November 2011. I've even had around 840,000 miles. I've had this cab 33 code 522116 for years. Still don't know what it is.
No idea man still have the code.. Ac doesnt work. Fan kicks in sometimes randomly coming to an exit on the hwy with engine break on.. got my mvi next month will get my mechanic to take a look. Maybe the compressor is gone.
I have posted sam cab fault chart more then 10 times here... use search button people. 2012 is sam cab version 6.0