The Year is 2001. The model is a Silverado 2500 HD. The Engine is an 8.1 Vortec
Thanks, XXXXX XXXXX finally come through :) Let me check a couple things. back shortly
The complicated version is below. basically you are losing communication between computers. this is very difficult to trace and requires a scanner and hope it is happening at the time. i wish i could give you a 100% reason/answer but can not. this type of code really does mean a tech needs to scan engine and follow many wires.
CIRCUIT DESCRIPTION Modules connected to the class 2 serial data circuit monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the modules. In addition to this, Node Alive messages are transmitted by each module on the class 2 serial data circuit about once every two seconds . When the module detects no messages and a high voltage on the Class 2 serial data link for approximately three seconds , U1301 is set and the setting of all other class 2 serial communication DTCs is inhibited.CONDITIONS FOR RUNNING THE DTC
CONDITIONS FOR SETTING THE DTC
ACTION TAKEN WHEN THE DTC SETS
CONDITIONS FOR CLEARING THE DTC