Transmission won't shift no over drive.

The replacement rear ABS ‘speed sensor’ won’t help unless it is installed!! Professional quality scan tool is capable of comprehensive scan testing - including live data on ‘this’ OBD 1 system.. I don’t see any testing details. Good luck!

Took it in a couple days ago and its the same. So i gotta take it back in to get it tested i guess. Also i drove my truck for two hours and the coo!ent is NOT hot! I took cap right off and didn't hiss or spit. Was like i didn't even drive it.

The tires are 16s. Which i thought would cause the speedometer to mess up is cuz of bigger tires. But i don't have bigger tires. been 16 as long as i knew the person who owned it. I can get my truck to do 70 but i don't push it past 40. I checked the cable and had it adjusted but no luck there. I just bought an ABS sensors yesterday and hope that might be the problem. But i feel like there more to it than just that. I will take it in when i can get an appointment. Thank you