Def level notification on a 19 - Chevy and GMC Duramax Diesel Forum
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post #1 of 13 (permalink) Old 11-11-2019, 10:37 AM Thread Starter
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Def level notification on a 19

Dealer told me the Def just shows empty as first warning then countdown to reduced power , I say BS !! Truck has 16,000 on it and has never shown any warning except Def empty , anyone else have this ?

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post #2 of 13 (permalink) Old 11-11-2019, 12:25 PM
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I thought I read somewhere that it would indicate level when it got below one third of a tank.

I have a Banks i-Dash 1.8 and it will show a real % number that changes once the level falls below 39%. If it has more than 39%, it just reads 39-40% all the time as that's the top of the sensor.

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post #3 of 13 (permalink) Old 11-11-2019, 05:10 PM Thread Starter
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I have edge gauge and it shows notta on def levels and all seem to confirm def should report several time when level goes below 1/3 or so with % , mine shows nothing until "diesel exhaust fluid empty 500 miles to reduced speed" then when I fill most its ever taken is 5.4 gallons , usually about 4.5 is all it takes. its a shithook system to say the least. 3 Dealers have no clues seems like by now they might know something

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post #4 of 13 (permalink) Old 11-13-2019, 03:56 PM
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def level reads ok …. till about 37 %
then says low
there is a thread somewhere here on this
and I found out the dealer does not ad def during set up and delivery ..
GM puts about 50 % from factory .. but customer must fill .. that's bull s&*t
mine came on with 400 miles on truck …
I think you get about 1000 miles after lite says loy before reduced power mode

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post #5 of 13 (permalink) Old 11-13-2019, 05:35 PM
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Quote:
Originally Posted by Duramaxdan59 View Post
def level reads ok …. till about 37 %
then says low
there is a thread somewhere here on this
and I found out the dealer does not ad def during set up and delivery ..
GM puts about 50 % from factory .. but customer must fill .. that's bull s&*t
mine came on with 400 miles on truck …
I think you get about 1000 miles after lite says loy before reduced power mode
It's not bullshit at all.

They don't fill fuel tanks at the factory either.

Both should be filled at time of delivery by the dealer.
This gives the best opportunity for both fuel and def to be fresh, and for the fuel to be an appropriate blend for the season/area.
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post #6 of 13 (permalink) Old 11-13-2019, 06:02 PM
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My 17 gives me a 1000 mile warning and a 500 mile warning. Do they not do this on 19's?
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post #7 of 13 (permalink) Old 12-01-2019, 07:05 AM
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My 19 3500HD will chime in with about 750 miles remaining. I fill mine each time I change oil at 5000 mi. Takes 2 jugs to fill.
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post #8 of 13 (permalink) Old 12-01-2019, 09:05 AM
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Originally Posted by redwngr View Post
It's not bullshit at all.

They don't fill fuel tanks at the factory either.

Both should be filled at time of delivery by the dealer.
This gives the best opportunity for both fuel and def to be fresh, and for the fuel to be an appropriate blend for the season/area.
Mine (def) was full off the transport and I verified this at one of the largest Chevy Dealer's there is there is. Mine is a 2020. Maybe they lied...

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post #9 of 13 (permalink) Old 12-01-2019, 11:35 AM
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Howdy, Jeff here, new to the Dmax and diesel, just purchased a 2019 Denali 2500HD.
My dealer did fill my DEF tank at time of purchase,said it took right at 2 gallons with only 20 miles on the odo...
I got the power will be reduced after about 3750 miles of combo towing a 4000 lbs travel trailer and normal driving 60-70 mph.
I have not seen the Re-gen message come up but have smelled it a few times, service guy said the system will do "mini" regens from time to time and the dash icon will not appear.
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post #10 of 13 (permalink) Old 12-03-2019, 07:58 AM Thread Starter
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i was not aware of a message or Icon that shows regens?? I don't believe there is one.

2019 Chevy Dually Door handles/color matched 110 Gal transfer-flow bed tank / 20"AE wheels Mich. 265/60/20 defender tires /husky rear flaps /cargo box/weathertech mats.tinted glass, xpel on forward surfaces, blacked out pillars
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