NOX sensor @ 56k miles

[gjb56]

2021 denali 1500. Just had all the 45k mile maintenance done on it., including oil and fuel filter. 3 days later throwing nox sensor code. Took it back to dealer and they verified nox sensor issue. Have to drop it off for a couple of days next week. Thankfully it is still covered under powertrain, currently have 56k miles. Just wondering how common this is

 

[gemarsh]

Had a nox sensor go bad before the 3/36k warranty was expired.

 

[BoostN]

Not on this truck, but I did lose a NOX sensor as I drove off the lot on a previous truck