2015 duramax nox sensor warranty. Front. Shop at DmaxStore for your Duramax needs. Thoughts on that as well. 6. Warranty Information For vehicles repaired under warranty, use the published Labor Operation for the actual cause and use straight time for diagnosis. 6. GM allegedly doesn't cover NOX sensor on the 80k emissions warranty. Figured might be good information to pass along. I have already changed out the I have 2019 GMC Sierra 2500hd Denali 6. The repairs will be made at no charge to the customer. hvzt5snkcrwqog4heemijqibw3oc1bnpr4t839uz7tf