code 24

hello guys.. it's me again

any of you know what can cause this code? the code 24
(vehicle speed sensor open or shortcut or park neutral switch)

and my coolant sensor is bad. what can cause this sensor?

i don't know why my truck runs really great when it's cold, but when warms out then rough and stalls..

help me .. im thinkin' to make voodoo to my truck :uhoh: :uhoh:
:uhoh:

ok ok i replaced this : MAP,COIL,SPARKS,WIRES,FILTER AIR,GAS FILTER,CLEANED THE egr, CLEANED THE TBI,NEW ENGINE

this is what i didn't replace IAC,coolant sensor, oxygen sensor,TPS,

thank you
Nalgman

Check your wiring going to the VSS on the transmission.

If it is intact and has no breaks, replace the VSS.