97z71chevy4x4

I'm having trouble diagnosing my 97 chevy...recently I was driving home from work and when taking off from a stop the speedo stopped working and my truck won't shift out of what I believe is 3rd gear. This makes me think trans problem until you factor in the fact the ABS light comes on when it does this. If you shut the truck off and restart it sometimes it'll fix the issue temporarily. Anyone else have this problem or any advice? Thanks!