LML Regen issues

[vboy55]

I have a 2015 with a cts edge tuner having some issues with regen going on and off and not bringing the soot down to zero.

I did go and fill up my DEF at a truck stop with bulk DEF instead of using the blue DEF I am close to an oil change I was wondering if either one of these two things could cause the truck not to go down to 0 on the soot I mostly drive 70 miles each way to work a day so there majority highway miles and just wanting some advice if this is something I should be concerned about.



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[BADLUK007]

Not sure about the issue at hand but, I'd recommend just using the ac Delco Def fluid and keep your receipt. They'll blame it on poor Def quality before taking blame. Just my first hand experience with my 2011 lml and about 20 trips to the dealer. If you buy the Def from the dealer, the bill is on them.

 

[clrussell]

Take the tuner off.. It's not helping your regen situation..

 

[duramaxdiesel]

Take the tuner off.. It's not helping your regen situation..

That right there is the best advice. That or do a delete and have a reliable truck once again. Best thing I ever did. Just my $.02.

 

[vboy55]

Truck is very reliable has 68,xxxx not a single issue had the tuner on it for the last 10,000 this just started happening after the bulk DEF. The question was could the DEF or being close to a oil change have something to do with it.


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[roxyfever]

The def maybe. I dont see how the oil would. I say go thru a tank or 2 of def and see what it does. Or you can drain it and refill it with the jugs

 

[NC-smokinlmm]

Def has nothing to do with regens. Do you ever pull a trailer with it?

 

[vboy55]

Yes just started pulling 7800 trailer first trip was in March 1,300 round trip.


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[NC-smokinlmm]

Yes just started pulling 7800 trailer first trip was in March 1,300 round trip.


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Go hook up to right when a regen starts and go pull it down the highway, you are passive regenerating and you need an active regen to get it down to zero soot grams.

 

[vboy55]

Go hook up to right when a regen starts and go pull it down the highway, you are passive regenerating and you need an active regen to get it down to zero soot grams.

Thank You


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[Hoffie]

That right there is the best advice. That or do a delete and have a reliable truck once again. Best thing I ever did. Just my $.02.

Me too... I just turned 450,000 miles and it has been great not having emissions issues

 

[vboy55]

Still having issues!!!! Looking to go the other route is refitting something I can do myself if I get the parts and the tunes???? Not a lot of info around on this


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[NC-smokinlmm]

Probably your driving style, time to delete it...