What should exhaust temps be on 2012 Silverado?

Also with each test the readings from NOx 1 and all exhaust temps were really constant through out, they did drop by around 25ppm on the runs when the cooling fan stopped. The readings from NOx 2 always started low ( 2-3 ppm) and slowly increased a little to around 10-15ppm.

What kind of def quality does a 2012 Silverado have?

I will say sorry in advanced as this is a rather long post and I did originally reply with this info on a different post but I feel that was a newbie mistake. I have a 2012 Silverado 2500HD with 33,000kms which has had a DEF Quality Poor Alarm and P20EE/P2BAD DTCs set for about 400kms now.

What was NOx 2 reading on 2012 Silverado?

NOx 2 readings did approach NOx1 after 10minutes of idling at 1500rpm with the Reductant Injector disconnected. 7. Ordered New NOx 2 sensor and purchased a Tech 2. 8. Installed New NOx 2 sensor, reset NOx 2 Sensor on Tech 2. 9. Went for several drives.

Is the 9th injector leaking on a 2012 Silverado?

So in all this there are 2 things that I have not confirmed, 1. that the 9th injector is not leaking and 2. that there is not a minor exhaust leak.I dont see how these would be interacting in this, but please correct me if i am wrong here.

What kind of exhaust fluid does a Duramax use?

I have a 2011 HD2500 duramax with poor exhaust fluid light on. Third trip to Dealer knock sensors and sensors. Not fixed yet 2011 3500 srw. Poor quality def. took to dealer. Said nozzle was clogged drained tank new fluid. Next day light on again. Back to dealer. New tank new pump new wiring harness. 4 days later light back on again Getting tired