2019 Duramax Regen

[Busdriver]

If you have a L5P Duramax Don’t let them do the update for regens, mine used to to 4 to 6 hundred miles between regens, after the recall now 2 to 3 hundard miles

[deltabravo]

4x4ord wrote:
Does the GM let you know when it is doing a regen? Or do you guess based on fuel economy?

As mentioned above, no factory gauge indication will "tell" you it's in regen.

When on a trip, the avg MPG will tank by about 2 mpg during regen. That's another way to tell.

I have an Edge Insight CTS2. I have it set to display when the truck is in regen.

ktmrfs wrote:
or in drive at a stoplight. rpm is around 800-850 during regen at idle in park, neutral, or in gear.

Ditto

If I pull up to a stop light while mine is in regen, I can tell it's in regen based on the slightly different sound as well as higher RPM.


My truck will regen consistently once per tank of fuel, though it's not an L5P. Mine is an LMM

[ktmrfs]

Skidus1 wrote:
I can tell my the idle. It’s a couple hundred higher in park.

or in drive at a stoplight. rpm is around 800-850 during regen at idle in park, neutral, or in gear.

[Skidus1]

I can tell my the idle. It’s a couple hundred higher in park.

[NRALIFR]

FishOnOne wrote:
You may need to drive it for a while as the new calibration may need some time to adjust.

That’s what I was thinking. The regen frequency may change as you get more miles on the new code.

The first year or two after buying my truck I was lucky if I saw 200 miles between regens. Now it frequently hits the 500 mile “Regen regardless of soot load %” limit.

:):)

[FishOnOne]

You may need to drive it for a while as the new calibration may need some time to adjust.

[jaycocamprs]

No, factory gauges don't tell you. I have my ScanGage set to display DPF%, so that's how I can tell.

[Lwiddis]

“Don’t let them do the update for regens...l

Are you sure? Qualified diesel mechanic?

[4x4ord]

Does the GM let you know when it is doing a regen? Or do you guess based on fuel economy?

[_1Flyboy]

I hardly notice the regens, our 2019 is very happy....

[garyemunson]

Better check if warranty is voided without update!