Welcome and thank you for allowing me to assist you! Gregg, this is a sticking isolation valve in the ABS Hydraulic Control Unit (HCU). I don't think it is a master cylinder, but just to be safe you may want to replace it also. Do have the HCU replaced and the system thoroughly bled. I am 98% sure that this will fix this problem.
I hope this information helps, and let me know if you need further assistance with this.
Can I disengage the ABS system and see if the problem stops ? And how do i Disengage the system
Well that may stop the problem by disconnecting the ABS connector at the control module or removing the ABS fuse, but if the valve in the HCU is physically stuck, it may not help. Go ahead and try it I suppose. There should be one or two fuses labeled ABS in the under hood fuse box. Note: when you remove them, your ABS light will remain on.
Thank you Gregg for the positive rating and bonus!!
I removed 2 fuses(40+15) the truck has never run this good. I did lose speedometer ? the engine light, ABS light And brake Lights are on. Anything nto do about the speedo ??? Gregg Schroeder
That will have to wait ,thats a fortune, Thanks for fixing this problem Chris. Its like driving a new truck ! It never drove better. I cringed everytime I had to drive it before.8 Years and I paid cash for it and Weathers dodge could only try to rip me off.
You are welcome Gregg! Let me know if you need any more assistance in the future,