94 RABS Test Result Help

[Lakota]

After replacing the driver side rear wheel cylinder the RABS light came on. I ran the test and using the codes that I got online it is giving me a code of 16 which indicates that I need to do a driving test. I am still getting the RABS light when I reach about 20mph but if I turn the truck off when driving and restart the light stays off and everything seems to work correctly.

What should I be looking for to correct this??

[Wicked_Sludge]

its most likely your rear speed sensor. located in the differential, on top towards the front of the vehicle. remove it and see if its covered with metal goop.