|
2013 GMC 3500HD- NOx sensor problem
I have a 2013 GMC Sierra 3500HD with the LML 6.6L engine.
There are only 31K miles on it, as it sits a lot. There are
two DTC's setting: P11A9 (HO2S Performance- signal low
during moderate load- sensor 1) and P20EE (NOx catalyst
efficiency below threshold). 
iATN Members:
Login to read this message and participate Auto Repair Pros: Join iATN to read this message and others Vehicle Owners: Find a nearby iATN member to repair your vehicle 33 Replies Received (View Replies)33 Replies Received (Hide Replies) |
|
33 Replies Received
33 Replies Received
| VIN | 1GT426C89D |
| Engine | 6.6 L |
| Trans | 6-speed Automatic (Electronic) |
Vehicle Data
2013 GMC Sierra 3500 HD Denali 6.6L
| VIN | 1GT426C89D |
| Engine | 6.6 L |
| Trans | 6-speed Automatic (Electronic) |
Video