Correct, last year the car was already out of warranty but they replaced a bunch of stuff for free related to the DEF including the metering valve. That was already under 2/24 repair warranty. So now the MV failed again and they replaced again.

The GP failed and seems in need of replacement which is fine. Iam just unsure why they deemed the GPCU as the cause of the failure and why it takes a $1000 in labor to change these two parts. Seems a bit much to me.

I was busy today and picked up the car late. The SA had left. However I got his card and intend to send him an email to find out about this.

If nothing else I will replace the GP (a $40 part) and see how it does. If it fails again the GPCU is faulty. If it works fine the GP is the only problem.

__________________
2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.