My speedometer stopped working and the transmission wont shift out of 1st gear....the car also dies and stalls Need help!!! How do u replace the speed sensor???

your output speed sensor is gone. It's on the driver's side of the transmission w/ a three-prong electrical connector towards the back. You'll need an 1-1/8" wrench to remove the sensor. Very simple to replace, should take no more than 15 minutes to fix.