Chevy DEF system failure
Just sharing for other's reference.
I own a 2016 2500HD diesel. It currently has 40k miles on the OD. Two days ago the check engine light came on. I checked the error code and it came back as a DEF system error (P21DD). I took it to the dealer on Wed morning to have it checked out. It took all day for them to get back to me, but the guy said that it's the DEF tank heater failed and it's a common issue. The parts are on backorder and it could take a month to get them in, so to drive it as is until then. He did say it might go into 'limp' mode at some point. I asked why it takes so long to get parts if these systems are a common issue. He didn't know.
The good news is that the repair is covered under some type of warranty....either emissions or drive train...or both. The guy also wasn't quite sure how that all fit together either. I asked about longevity of the repair and he said it would be covered under a parts warranty for a period of time....which I'm sure is less than 40k miles. It does make me leery of future failures though, but I bought the truck knowing the DEF was likely a PIA, so guess I'll deal with it as it comes.
He did say that GM will be removing the DEF systems on future vehicles because of all the problems they create. I would like to know where he got his information as I've not been able to find any evidence that supports that happening via a web search.
I own a 2016 2500HD diesel. It currently has 40k miles on the OD. Two days ago the check engine light came on. I checked the error code and it came back as a DEF system error (P21DD). I took it to the dealer on Wed morning to have it checked out. It took all day for them to get back to me, but the guy said that it's the DEF tank heater failed and it's a common issue. The parts are on backorder and it could take a month to get them in, so to drive it as is until then. He did say it might go into 'limp' mode at some point. I asked why it takes so long to get parts if these systems are a common issue. He didn't know.
The good news is that the repair is covered under some type of warranty....either emissions or drive train...or both. The guy also wasn't quite sure how that all fit together either. I asked about longevity of the repair and he said it would be covered under a parts warranty for a period of time....which I'm sure is less than 40k miles. It does make me leery of future failures though, but I bought the truck knowing the DEF was likely a PIA, so guess I'll deal with it as it comes.
He did say that GM will be removing the DEF systems on future vehicles because of all the problems they create. I would like to know where he got his information as I've not been able to find any evidence that supports that happening via a web search.
