Thanks Huntindog. Correct info is nice to have.
In that case, we may actually have our first forum event of a failed Bosch CP 4.2 in a Duramax.
Some avid readers may recall a long thread in the Fifth Wheel part of the forum about a user having truck problems near St George Utah. He was mostly concerned with moving the fifth wheel to a proper location, and the truck was barely even mentioned.
However, out of curiosity I PM'ed this member. He replied back to me his vehicle was a 2011 Duramax and the HPFP had gone bad on it during his trip.
So possibility surely exists it was the CP 4.2. And it was on a Duramax.
VW has been under investigation by the NHTSA for failures of the Bosch CP 4.1 pump in their diesels. Ford and GM I believe both got requests from NHTSA for information about their use of the CP 4.2 pumps.