The last paragraph in the article indicates there is a problem and they do not know what it is specifically. Looks like "GM Authority" uses anonymous sources for their reporting and are not sure of the facts.
Doesn't surprise me, my brother in law works for a chevy dealer down in lancaster. Some of the stuff he tells me about makes me question if I'd ever buy a newer chevy vehicle
We paused delivery on a small number of HD pickups with the 6.6 liter Duramax engine last week to finalize an investigation into a potential quality issue.