vss?drac?sensor?help

[Petergriffen]

okay i have a 1996 4wd tahoe and latley i dont have an accurate speedo from about 30 and under. i ran the codes and i got like 5 different ones. all the sensors were open. till the truck gets running correctly past 30ish it will buck a bit lately. sometimes if i remove and replace the vss in the tcase i can get it working. it all came on at once some im not thinkin the hubs or sensors. maybe a ground somewhere??? do you know where the wires are? thanks for the help in advance if you know anything.