I get the message on random occasion. Usually when at highway speeds. I've replaced the tb. Also, the pedal assembly is fairly new. Anyone ever had this problem. And if so, please take a min or two to help with your findings.

 

Forgot to add. It's a dbw 01 truck with an lq4.

 

Check your grounds. Especially the one on the back of the drivers side head.

 

Check the connector that plugs into the tb in the early years of dbw they had a issues with the wires breaking right as the go into the back of the connector. It was so bad that I belive that gm released a updated pig tail that you can replace the factory connector with.