I have a 2004 dodge 3500 with a 6 speed...My speedometer is jumping, replaced the one in the rear end. Did not fix it.....Is there another sensor somewhere and where do I find it? The auto parts stores are not showing any other ones..

Thanks

 

The speed sensor is located in the overdrive gear case. The sensor is positioned over the park gear and monitors transmission output shaft rotating speed

 

It's most likely the gauge cluster. It is a common problem

 

i remember the recall on the o4 dmax , should check for a tsb on that might be able to get it done free? i did!