I can clear them with HPT, but they just end up coming right back.

 

On my o3 silverado.i'm gettin a code p0106.its manifold pressure,anyway when i floor it i get that code .just started,i got a p an p t.b,cai an a cat back system.it's a 4.8 4x4 runs good but this code keeps commin back.i delete it with my handheld,nail it and it lites up again .anybody gotta a clue?is there a reason why this started or should i replace it and quit worryin bout it.

 

Are you sure your TB is sealed properly?

 

the t.b has been installed 4 about 2 months,this code just started last wednesday night.ya think it could be the t.b loose?

 

That would be one thing to check. I believe a vacuum leak can cause that code, which could stem from a leak at the TB.