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We had a message on the DIC that read def was getting low,
we had a message on the DIC that read def was getting low, we added def to full capacity. Then upon restarting the water in filter light came on and the message then reads to see owners manual for the… read more
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We have a 2015 Chevy 3500 duramax. We are getting code p249d
We have a 2015 Chevy 3500 duramax. We are getting code p249d and exhausted fluid quality poor. We added more def and diesel. We are getting out speed reduced. What can we do? … read more
Gm Tech (Cam)
Gm Tech (Cam)
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My service exhaust system message with the mileage countdown
My service exhaust system message with the mileage countdown wont reset … read more
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I have a 2011 diesel 2500hd GMC Sierra and was driving it
Hi I have a 2011 diesel 2500hd GMC Sierra and was driving it and the def warning cam on and told me poor quality and then the check engine light has come on to and also my def tank is filled and now m… read more
Chris Carr
Chris Carr
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I have a 2016 gmc diesel I got a warning light-to Service
I have a 2016 gmc diesel I got a warning light-to Service Exhaust fluid system.With no check engine light I brought it to my local shop they changed the two heaters one line heater and one tank heater… read more
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DEF light stays on, speed limited, I filled twice and I
DEF light stays on, speed limited, I filled twice and I don't see a leak … read more
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General auto certifications
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Def light won't reset after adding fluid and speed has been
def light won't reset after adding fluid and speed has been reduced to 65 … read more
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2015 Duramax DEF light won't reset after adding fluid and
2015 Duramax DEF light won't reset after adding fluid and speed has been reduced to 55 mph. … read more
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I have a 2011 Chevrolet 3500 with 6.6 duramax. I have
I have replace the def heater. Truck is in limp mode all test come back passed. But is stilll in limp mode and now says at next fuel fill will go to 4 mph . How do I reset this … read more
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Chris (aka-Moose)
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2012 Silverado 3500 HD, Duramax, w/ 52,000 mi. (Just
2012 Silverado 3500 HD, Duramax, w/ 52,000 mi. (Just purchased) Check Engine Lamp on, Plus message "Exhaust Fluid Poor Quality" . Truck is in 65 mph limit, soon to drop to 55 mph. Added 2.5 gal. fresh… read more
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I have a 2012 gmc 6.6 durmax this will be thrird time I have
I have a 2012 gmc 6.6 durmax this will be thrird time I have had problems with def it seems to go for about 11 months the dealer has replaced tank pump now it just come up with bad def this is three t… read more
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Need to know how to reset diesel exhaust fluid system, Yes
Need to know how to reset diesel exhaust fluid system … read more
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The DES system won't reset after adding fluids. Diesel
I tried to unhook the battery to see if I could get a reset. … read more
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2011 GMC Sierra 3500 HD w/6.6 L turbo diesel with 36,000
2011 GMC Sierra 3500 HD w/6.6 L turbo diesel with 36,000 miles. "Exhaust Fluid Poor Quality" warning just recently came on the DIC along with the engine light on the dash. Put 2.5 gal. of Blue DEF int… read more
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Filled def tank and still won't go over 55 How do you reset
Filled def tank and still won't go over 55 How do you reset it? … read more
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I spend a lot of time on the road. i am retired. i usedto
I spend a lot of time on the road. i am retired. i usedto design and build 12V and 24V control systems. This winter my DEF started giving me strange readings. the tank was at 14% and it took maybe 1 g… read more
Roy
Roy
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Oh I started my 2011 gmc duramax and the service diesel
Oh hello. I started my 2011 gmc duramax and the service diesel exhaust fluid soon light came on with the check engine light. … read more
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I have a 2006 Gmc loaded duramax diesel extended cab. I love
I have a 2006 Gmc loaded duramax diesel extended cab. I love it and the only reason I want to sell it is to get a crew cab short bed. I am looking at a 2012 gmc duramax short bed crew cab and the thin… read more
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Gm Tech (Cam)

Gm Tech (Cam)

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Chris (aka-Moose)

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Don - Mo Lurch

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Mike S.

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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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