Speedometer not working can we fix it?

Changed transmission and it won’t shift, can only shift manually 1st to 2nd and speedometer doesn’t work. I have changed speed sensors and shift solenoids.

Okay. I have tried 3 dash clusters and they do all the same with the same ticking sound. So I guess it’s somewhere in the wiring.

Hey y'all I have have a problem that is driving me nucking futs! My 1999 Chevy Silverado 1500 is having problems with the speedometer and the AC. My speedometer is only working when it wants. The needle will sometimes bounce around and then go back to 0mph and stay there. It used to only do it when it got really cold in the mornings, which is only once in a blue moon here in Florida so that's why I ignored it, once my truck warmed up after a few miles, it would start to work again. Now the darn thing doesn't work at all and it hasn't been cold here for a couple of months. When my speedometer isn't working, I noticed that my odometer doesn't either. A few people have told me that the instrument cluster is bad and one person said that it's a sensor that Chevy only used in the '99 model Silverado's becuase it caused what's happening to my truck. I'm out of ideas and getting answers from Chevy is like asking for the keys for Fort Knox. I'd appreciate any and all help with this matter. Thanks!

Thanks! The transmission does shift okay and doesn't seem to have any problems. I was leaning more toward the cluster too. The people that I talked to about the speedometer told me they had to replace the cluster. Thanks again!