Is this a well-known transmission? If so, there could be much cheaper options. Example for our '02 165k mile Tahoe, I damaged the trans after not getting one of the return lines back on it properly. I can remove and replace, if slowly, by myself.. that opens up more opportunities though. This is the 4L65E trans. I got a 'craigslist guy' that I got comfortable with to do a quickie rebuild literally while I waited for like $350 .. meaning pretty much just the key 'frictions' replaced plus a few of the valve body and other known easy fixes/upgrades. If I drove it into a trans shop, yes, I'm sure I could have easily shelled out $3000.