2nd Gen Non-Engine/Transmission ABS Light

[Neibe]

I just had my truck in to the brake shop. My ABS light is on but only sometimes. The brake shop said there computer scan said "no comunication" they said it means either there's a problem with my truck or there computer any ideas? I had then put in 3500 series wheel cylinders while they where at it they said they swapped right in. It stops much better now should help with stopping the camper.

 

[FourBarR]

rear abs sensor. or mine had harness to sensor chafed thru just by the rear wheel left side.