u/Bulky_Adeptness334

I have a 1993 k2500 with the 4l60e when I’m driving it gets stuck in first gear but I can manually shift into 2nd and 1st with no problems and the speedo goes crazy then I let the truck sit and it will be fine for a day or two then does it again I replaced the vss as I saw that was a common problem and still does it any advice would be much appreciated thanks!