speedometer

So first a brief description of the state of things then the questions: I have a 2003 s10 4.3 4x4. It rides on 5.13 ratio axles and 37" tires. A while back I sent my ECU in for a wait4me tune and after getting it back, it read the speedometer dead on. Recently, I had to pull transmission, tcase...

Howdy, I just changed the battery in my truck and when I started it the speedometer maxed out and it hasn't moved a bit, I have a 96 and everything I searched for seemed to apply for 98+ so does anybody know what's going on? My abs light is on but I don't really know why, the wheel studs broke...