Busdriver

Shepherdsville Ky 40165

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Have a 2019 Duramax , have a service exhaust soon message check manual. The manual says contact dealer. Anyone have any ideas. Don’t seem to have any power.
Busdriver 2019 2500 Chevy Duramax , - 2017 Grand Design 303 RLS
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jdc1

Rescue, Ca

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You need a scanner to tell what the problem is. Sounds like you went into limp mode, to keep from blowing something up.
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#1Flyboy

California

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U might try googling “ Duramax Forums “……
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Grit dog

Black Diamond, WA

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If I had a truck with Tier IV emissions, I would not leave home without a good code reader. Something like AlfaOBD or similar.
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Michelle.S

Western NY till fall, then Sebring, FL

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Many Auto Parts Stores can read the code and give suggestions. Might be something simple or major, but the code will help.
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ksss

Eastern Idaho

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It should have at least basic Onstar. It will tell you what the code is.
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ACZL

UPstate,NY

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Based on OP's post, I'd place $$ that the DPF (Diesel Particulate Filter) is plugged up
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Cummins12V98

on the road

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Auto Parts can look at your codes.
Curious do you do a lot of short trips?
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sayoung

Tx

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ACZL wrote: Based on OP's post, I'd place $$ that the DPF (Diesel Particulate Filter) is plugged up
There is also 2 oxygen sensors , one on each side of the DPF filter if like my 2012.
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Grit dog

Black Diamond, WA

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This is one of those "makes ya wonder" threads. OP posts a rather basic/cryptic post asking for help/suggestions, then doesn't return, even though it appears to be an immediate type of issue.
Could be....
DEF injector
DEF pump
DPF or SCR plugged
Malfunctioning sensor on exhaust, EGTs or O2s
Bad DEF sensor or bad DEF
Drives like an old man and plugged 'er up and hasn't spent any time completing a regen.
Physical issue with DFP or SCR
These off the top of my head. Bout as good as suggestions as can be given with literally no additional info provided by the guy with the constipated exhaust!
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