ABS/brake problem with no speedo

[ASAI Services]

I have a 2007 cab and chasis 3500 reg cab HD with 6.7 cummins. I have had to fix several other electrical issues. What I have left is code P0501, P0700. The ABS, Brake, and Check engine light are on. The speedo is not working as well. I have used my scanner to check abs module however it says it cannot connect and I should check fuses and wiring. I have done that and everything is ok. When I look into trans module I can see that speed sensor 1 is showing no activity and sensor two does show rpm. When I look into pcm the mph shows nothing when I am moving. I have checked both sensors and I am getting signal from both. My question is does the speedo get its signal from the ABS module? If so if the module is bad will that cause my symptoms? If so let me know thanks...:eek:

[Tbird100636]

I have a 2007 cab and chassis 3500 reg cab HD with 6.7 Cummins. I have had to fix several other electrical issues. What I have left is code P0501, P0700. The ABS, Brake, and Check Engine light are on. The speedo is not working as well. I have used my scanner to check ABS module however it says it cannot connect and I should check fuses and wiring. I have done that and everything is ok. When I look into trans module I can see that speed sensor 1 is showing no activity and sensor two does show rpm. When I look into pcm the mph shows nothing when I am moving. I have checked both sensors and I am getting signal from both. My question is does the speedo get its signal from the ABS module? If so if the module is bad will that cause my symptoms? If so let me know thanks...:eek:
You have a bad rear wheel speed sensor on the top of the rear diff. Yes, the ABS sends the vehicle speed over the CAN Bus to the Cluster for speedometer operation. Common on Dodge trucks for years.