Hi Naomi, I'm pleased to assist you. We highly recommend having the vehicle checked by a certified mechanic as it needs a real-time diagnosis to determine what part/s need replacement/s. If interested in this automatic transmission speed sensor, click on the link below to order at 69% off the regular price while supplies last. I hope this helps. Enjoy shopping at Carparts.com! https://www.carparts.com/automatic-transmission-speed-sensor/dorman/rb917636?can=CPGG4850

Hi Frank, I'm glad to assist you. Please click the 1st link below to see the details about the transmission speed sensor part as your detail reference. Then, once this matches with what you need based on your troubleshooting or a mechanic's advise, please click the 2nd link below to order this part today. I hope this helps. Happy shopping. https://www.autoblog.com/2019/06/14/symptoms-of-a-bad-or-failing-transmission-speed-sensor/#:~:text=Transmission%20speed%20sensors%20are%20used,shaft%20speed%20(ISS)%20sensor. https://www.carparts.com/automatic-transmission-speed-sensor/dorman/rb917636?can=CPJE1043

Hi Ronnie, So a check engine light is showing for a problem to be addressed. Yes, the speed sensor on the transmission could possible be defective already by now if you have not replaced that for a long period already. This is matching the factory original transmission; transmissionmfrcode : 4R70W. Still it is best to have your vehicle checked by a certified mechanic for a careful and extensive troubleshooting to isolate the part or parts to be replaced.