C0245 Code Speedometer stopped working, transmission wouldn't shift, abs and brake lights were on?

I have a 2004 chevy trailblazer LT automatic 4WD with a 4.2 engine. Speedometer stopped working,transmission wouldnt shift,abs and brake lights were on. Codes were c0040,c0055 which were for front and rear abs circuit malfunction. The vehicle speed sensor was replaced along with the connector that plugs into it and 2 new wires from the vehicle speed sensor to the one ECM connector where the 2 wires go into because the old wiring had an issue in a tough spot to get to so i ran new wiring. Speedometer now works,transmission shifts normal. All codes went away but a new code appeared which is c0245 wheel speed sensor frequency error. I took the vehicle for a ride with my scanner on the live data for the ABS. When stopped the front and rear abs read 3.11 mph which i found online is normal for these older chevys. When driving the rear abs is reading approx 15-20mph lower than the front abs. For example the front will read 40mph but the rear will read 23mph. Speedometer will show whatever the rear is reading. The rear wheel speed sensor(located on the passenger side uptop of the transfer case towards the rear) was replaced. The issue is still the same so i’m under the assumption that there is a possible wiring issue with this sensor as well. The 2 wires(light blue and dark green) go to 1 of 3 connectors on the TCCM. Dark green wire is low signal-rear and light blue wire is high signal-rear. Is there a specific value i should be getting when testing these wires? I’m trying to figure out if there’s a wiring fault or a computer fault. Thank you