Chevy Colorado Diesel Forum banner
blow by
1-1 of 1 Results
  1. Colorado Diesel Mechanical
    Has anyone pulled the oil fill cap on their truck and noticed blow by? I realize that some is normal in a diesel, but mine seems to puff smoke pretty consistently. I didn't check for blow by until my truck threw a P0172 code which reset itself. According to GM service info diag the code can be...
1-1 of 1 Results
Top