Quote Originally Posted by eric View Post
TB removed, cleaned very goodand re-installed. I went to the local garage nearby and he thinks that could be either the pedal module or TB to be at fault and not giving any code
The accelerator pedal assembly itself is an electronic unit. On my 2009 (bought new) it was found to be faulty and replaced by a dealership under warranty when it was only three months old. Mine is an automatic and it was shifting erratically. You might want to check with Chevy on this and see whether it is covered under warranty.