Chevy Duramax DEF issues
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 ...
Forum Discussion
I found this at http://www.peakhd.com/product-lines/bluedef/faq/
General Motors: 2010-2011 Chevy Silverado 6.6L Turbo Diesel and GMC Sierra 6.6L Turbo Diesel
TSB/Campaign Number 11183B - Some Silverado and Sierra HD vehicles may experience SCR issues, especially at colder temperatures, where a MIL will be displayed. Corrective action is to install a shield and insulator to the DEF tank.
TSB/Campaign Number 11326 - Some Silverado and Sierra HD vehicles may experience SCR issues involving DEF tanks that were built with low internal resistance, causing DTC codes P21AB, P203D or P21BO. Corrective action would be to perform campaign 11183B and if problem is not corrected, replacement of entire DEF tank would be necessary.
TSB/Campaign Number 11001 - Some Silverado and Sierra HD vehicles may experience SCR issues where the DEF system may not operate as intended. MIL will indicate, DEF system warning will display and vehicle speed may be limited. No codes in particular are identified, but GM calls for ECM reprogramming per campaign with new software in the event of an SCR system issue.
They go on to list a bunch more for other vehicle makers. So lucky me I live someplace where it gets cold. I wonder when I will have to replace my def tank in or out of warranty?
General Motors: 2010-2011 Chevy Silverado 6.6L Turbo Diesel and GMC Sierra 6.6L Turbo Diesel
TSB/Campaign Number 11183B - Some Silverado and Sierra HD vehicles may experience SCR issues, especially at colder temperatures, where a MIL will be displayed. Corrective action is to install a shield and insulator to the DEF tank.
TSB/Campaign Number 11326 - Some Silverado and Sierra HD vehicles may experience SCR issues involving DEF tanks that were built with low internal resistance, causing DTC codes P21AB, P203D or P21BO. Corrective action would be to perform campaign 11183B and if problem is not corrected, replacement of entire DEF tank would be necessary.
TSB/Campaign Number 11001 - Some Silverado and Sierra HD vehicles may experience SCR issues where the DEF system may not operate as intended. MIL will indicate, DEF system warning will display and vehicle speed may be limited. No codes in particular are identified, but GM calls for ECM reprogramming per campaign with new software in the event of an SCR system issue.
They go on to list a bunch more for other vehicle makers. So lucky me I live someplace where it gets cold. I wonder when I will have to replace my def tank in or out of warranty?
