Chevy Duramax DEF issues

[dave17352]

I have been following a thread recently on duramaxforum.com which is following people that have had DEF problems with their 2011 and newer chevy duramax trucks. I happen to be one of them. My truck is in the shop for the second time, first time they replaced the NOX sensor. 300 miles later it is back in for DEF issues and I won't know something til next week. I was wondering how wide spread it was because it is a 36 page thread and growing on duramaxforum. I would like to hear from anyone on here that has the DEF version Duramax and whether or not you have had any problems.

I was thinking maybe we could post here what your year your DEF duramax is and whether you have had problems or not, and the mileage of such problems or hopefully the mileage of trucks with no problems.

I am trying to figure out if I should keep this truck or not.

Thanks

I absolutely love this truck except when it breaks down!


2011 duramax 24k CEL NOX sensor replaced

300 miles later back in shop for DEF issue

[sayoung]

MARK VANDERBENT wrote:
Wow !!lots of responses with no issues and only a few with slight. Lots of happy duramax owners out there!! I know that for fact !!

No issues on my 12.we have a little over 12k in just 15 months.
Never used any def except the stuff at Walmart

[MARK_VANDERBENT]

Wow !!lots of responses with no issues and only a few with slight. Lots of happy duramax owners out there!! I know that for fact !!

[nevadanick]

I have a 2011 and had def issue at day 6 of owning truck. Dlr replaced tank and i now have 65k miles with no def issues other than it doesnt give a warning until about 300 mi

[NHIrish]

2011 Duramax 3500...32,000 miles and no issues other than low def warning usually appears at 600 +/- miles rather than the 1000 mile mark.

[NJRVer]

Passin Thru wrote:
I'm going with Toyotas. My Chevy is a hangar queen as well and Chevy makes me pay the dealer and then won't reimburse me because we bought the truck in Vermont and are now in Va. My wife has had 6 Toyotas and we have never had any real problems with them, just the sales people in their shops who say things to my wife like at 40K mi, "You need to change your muffler, it's rusting." "You need new Mcpherson struts"

Didn't know Toyota made a 1 ton diesel for sale in the US.:R

[esfd243]

2012 with 29k, runs perfect!

[smithrjd]

2011 3500HD 20K miles no DEF issues. 2014 2500HD only 1500 miles, but no DEF issues.

[Bigfoot_affair]

2012 Silverado 3500, 22500 miles and 0 issues...

[Passin_Thru]

I'm going with Toyotas. My Chevy is a hangar queen as well and Chevy makes me pay the dealer and then won't reimburse me because we bought the truck in Vermont and are now in Va. My wife has had 6 Toyotas and we have never had any real problems with them, just the sales people in their shops who say things to my wife like at 40K mi, "You need to change your muffler, it's rusting." "You need new Mcpherson struts"

[TugCE]

I was just talking to my buddy about this. He and his wife Full Time and have a Carriage Cameo Fifth Wheel and have put over 44,000 miles on their 2012 Chevy 3500 Dually in less than 2 years. I was asking him if he has had any problems and he said None at all. The truck has never been in for anything but normal maintenance.

[ron64gc]

2011 Duramax 11500 miles. Bad Def CEL. Replaced Nox sensor 2. Fluid checked good. No more problems so far.

[greende]

2011 3500 with 8000 miles. No DEF issues...yet.

[FranknDiane]

2012 w/16,000miles...no DEF issues

[CWSWine]

Had my def low light come on and filled it with DEF from AutoZone. Light didn't go out and got reduced power message came on and a engine light. Brought to the dealer he replaced a heated line that injects the DEF.

From the repair ticket:
Preformed Diagnostics, Code P242B EGT Sensor 3, P20BF, Reductant HEATER 2, Traced to problem in reduction fluid injector supply pipe, A DDED .3 for diag time.
Miles in 5521
Model 2500HD
Year 2013

[FishOnOne]

This is a real shame... GM has had enough time to resolve these DEF issues!

Not to mention the hideous tank hanging below the frame right behind the front passenger tire! :R

Not too confident the dealer will be much help!

Good luck!