has anyone had trouble with the 4 speed automatic in the 2007 and 2008 model silverados and sierras with the 5.3 vortec motor

 

i got to drive one of these when some old drunk lady on coke totaled my 2003 silverado

these shift really well and they have an onboard computer that doesnt let you rev too high so you dont blow your motor and it shifts VERY smoothly