car I bought has the gta digital dash. The speedo reads randomly while driving and sometimes even drops to 0. I am guessing the speed sensor needs replacing. Rear gears are changed to 3.73 so what would I need to buy for the 700r4 to make it read correct speed? Is there a special sender or gear I need for the speedo that hooks into the trans?

 

you will need a Digital Dakota SG1-5 to get your speedo reading acuratly with your rear gears. As far as the speedo bouncing around i recomend cleaning the connections to the digital dash. I mounted mine here on my digital dash

 

That is nice spot to mount that. Thanks for sharing!

 

Update: for anyone else with a bouncing speedo, I removed my cluster and cleaned the contacts with a brush and now it works fine.