it shouldnt take more than 5 -6 hours to complete the job. chance are theyll put off the job until work flow has slowed down a bit. thats wat happened in the dealership i use to work for. a car sat in one of the bays engineless for about a week before someone finally took the job wen things got slow. a transmission swap is not urgent on the spot like an oil change... still important but the dealer will make you wait. 2,400 usd for a brand spanking new transmission is pretty good, but you realize your putting it into a car thats probably worth about $5000 by now.