wheel speed sensor on 1995 GMC Yukon

would my wheel speed sensor cause my transmission to down shift if the speedometer is readin 50 then drops down to 30, or would that be something else?

2 answers 1 comment
In my car I was having the same problem until I changed the speed sensor that was on the transmission.
The input & output speed sensors need to be changed if your car violently downshifts gears
wheel speed sensor control the abs system, not the transmission.