Four weeks! Ugh. Good luck in getting it back soon.
Mine's at the dealer for a third time to fix a leak in the AC system. They've had it for three days and can't narrow down the spot leaking even with dye-laced freon. The vehicle is three months old and the AC has never been 100%. Pretty frustrating.
On a positive note, they had the software upgrade for the recall so that will be out of the way and supposedly I can use the cooler box for the first time without fear of causing electrical faults.
Did they provide you with a service bulletin or other reference to the nature of the cooler box fix? Would like to get this done to mine, feel ghetto driving around without a fuse.