On a trip from Phoenix to Washington state we experenced a strong vibration in the drive train of our truck. We fully expected to buy a new transmission. We told Scotty's that we needed the transmission replaced. They did a diagnostic teat on the vehicle and stated we needed a tuneup and found a vibration in the driveline but assured us the vehicle would make the trip without further repairs. They charged us $3000 less than we were prepared to pay for the repairs. Thye even called us the next day to see if we had completed our trip without further difficulties. A great shop. I wish we lived closer so we could use their services on a regular basis.