John is a wonderful human being at Transmission Specialist's. He helped me troubleshoot my issues last year. My experience is chronicled someplace here on the Forum including locations where I finally found someone who could Test my ECM outside of the vehicle.
Net result was I did use "John" to have both my ECM and Touchpad rebuilt at prices that left others with their mouths wide open....in other words, his prices are not touched by anyone else. All is back to normal now and believe me when I say, I did my research and more troubleshooting than I care to admit....lol :-)
