How do you change the speedometer sensor on a 2003 Dodge Grand Caravan Sport?

These vehicles do not have speedometer cables. There is an Output Speed Sensor mounted on the transmission. That sends electronic data to the powertrain control module PCM and the body control module BCM. The PCM uses the speed data to coordinate shifting. The BCM uses the data to drive the speedometer. It's all digital.


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Follow the speedo cable inside eng compartment down to where it connects to the sensor. Unscrew the cable, pull the elec plug, take out the 10mm bolt, pull the sensor. Replace is opposite.