I had just gotten out of the hospital from back surgery. My transmission went out on my Suburban. Tehachapi Transmissions fixed it and got it back to me in less than a week. It didn't seem quite right so I brought it back. They found out that the actual case had been bent probably from the manufacturer. They got a new case and put it in without charging me. They fixed my transmission and it's rock solid. He did all of this without charging me for the case. I know that just the case alone is $900. He never charged me another dime. He stands behind his work 100.