Does anyone know what the ohms spec on the rear speed sensor located on the rear diff is supposed to be on a 99? I am reading 1920 ohms but am not throwing an ABS code and I am not sure if this is an acceptable resistance. I am looking for anything that could cause my truck to have very low shift points and very high govener pressure. The tv cable is good and I have a DTT trans. Any help would be great.

 

Well that won't cause low upshift. 1.9 k OHMS seems about right.
Diesel governor pressure is higher than gas engines. Gas will have perhaps 30 PSI at 30 MPH. Diesel will Have perhaps as much as 50 at 30 MPH.
From description it would seem throttle cable misadjusted. There is thread on adjustment procedure. Basically with lever on tranny fully forward, any movement of throttle will cause movement. There may be some futher travel avalaible on lever at WOT.

 

Note governor pressure:
Governor pressure should be no more than 20.6 kPa (3 psi) at curb idle speed and wheels not rotating.
If pressure exceeds 20.6 kPa (3 psi) , a fault exists in governor pressure control system.
Release brakes, slowly increase engine speed, and observe speedometer and pressure test gauge (do not exceed 30 mph on speedometer). Governor pressure should increase in proportion to vehicle speed. Or approximately 6.89 kPa (1 psi) for every 1 mph.
Governor pressure rise should be smooth and drop back to no more than 20.6 kPa (3 psi) , after engine returns to curb idle and brakes are applied to prevent wheels from rotating.