Yes my rep at the dealer said the replacement only takes 1 day when they have the battery. I was told they are replacing the entire battery. 2 weeks and the dealer still has not received the battery.
One module was 7hr of book time I think. Not sure if more modules is more time -- probably a little more time but a lot of the effort should be the same.
My dealer got the module in a week or two I think...and got halfway through replacing it before realizing they had a broken tool, so it took about a week to finish.
There's the actual replacement of the battery module which is a day task. Then there's the rebalancing of the cells. My dealer said this takes 12 hrs to perform with a tool/machine.
It was just under four weeks without the truck for me to get it back. Over a week of that was due to the dealership not able to find a tool in their stock room right away...