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
dave17352 wrote:ricatic wrote:
Both Ford and GM had a lot of trouble in the early 2011 model year. Teething problems plagued both manufacturers. Ford issued numerous programming updates trying to solve their DEF related issues...Troy knows this but still bashes GM...the Ford problem was a cold weather issue...
GM also had cold weather issues..and some problematic DEF tank and pumps in 2011.GM had enough trouble at first that they received an emissions exemption from the EPA to disable the system temporarily until a fix was developed. 2012 and up model years for both manufacturers have been relatively free from DEF related issues.
Regards
So shouldn't gm bring the 11's up to 12's standard with a recall?
Because at the time this was all going on, I was still driving that POS 2011 6.7 Ford, I did not follow the GM repairs to the letter. I do know that all the trucks that were included in the temporary DEF emissions disablement were required to be reflashed to the new software under the agreement. If not reflashed, the warranty was voided.
After the final emissions programming was released, for both GM and Ford, the early DEF and emissions issues were virtually eliminated.
Please do not misunderstand. Although both manufacturers have eliminated most of these emissions related DEF problems, they both are still susceptible to the normal failures that just happen. All in all, with all three manufacturers now using DEF emission controls, there are very few problems...but that don't help when it's your truck having problems...at least with GM, there will be warranty coverage...
Regards
