Much like goodsnap stated, your truck should be doing passive regens anyways. Another reason on top of codes it won't successfully do this is low...
The truck will regen based on it's own demands. Things like short trips and higher soot output from engine will require more frequent regens. Also...
It's gonna be an issue with the kingpins. The shop that installed the axle probably didn't replace(or even possibly damaged) the bushings and...
