My Vehicle had A/T light on the dash, which comes ...

My Vehicle had A/T light on the dash, which comes and goes. Once the light appears my car losses power and feels like its stuck in one gear. I took to my usual mechanic and he couldn't locate the problem. One of my friends recommend to take it down to Global Transmission Blacktown to check the transmission. They scanned and diagnosed then told me to come back once the light reappears. About couple days later, the A/T light came back on and took it back to re-scan, they told it was a speed sensor that was playing up and they need the car for the day to repair. I organised a day and dropped the car off, until late afternoon, picked up my car and its driving great. Thanks to Global