how long does a shop take to rebuild a transmission
An Automatic Transmission can be rebuilt in one day, but the average time it takes to rebuild an automatic transmission is three to four days.Time frames for rebuilt transmissions.he transmission shop you choose should be able to give you the average time it takes them to rebuild a transmission. On their written estimate to you for the rebuild cost, the time it should take them to complete the job should be listed as well. It's up to you take make sure though.