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My husband's def system is saying that it is low. But the
My husband's def system is saying that it is low. But the resivior is full … read more
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The Def fluid is full but the code is saying that it's low.
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Working on a 2012 2500 GMC with the 6.6 duramax got a # 4
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I have a Service Exhaust Fluid System light on. Not sure
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GMC 2015 Duramax LML V8 6.6L - DIC message SERVICE EXHAUST
GMC 2015 Duramax LML V8 6.6L - DIC message SERVICE EXHAUST FLUID SYSTEM - SEE OWNERS MANUAL . Filled DEF reservoir. Was not empty. Drove 60 miles still did not reset. Warning that it will reduce MPH t… read more
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2013 GMC Duramax has service exhaust fluid system message.
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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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virtual auto tech.
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Filled def tank and still won't go over 55 How do you reset
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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
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I have a 2011 GMC Sierra 2500 and the warning on my dash
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As per my last question my GMC Duramax is smoking. My injectors are original and out side the extented warranty. When I had the fuel rail cleaned shouldn't the mechanic have noticed if the injectors w… read more
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GM GMC Sierra SLT 2500HD: I have a 2008 GMC Sierra SLT 2500
I have a 2008 GMC Sierra SLT 2500 HD Crew, Long Bed with a diesel engine. It should have a 34 gallon fuel tank. The fuel light comes on and the range indicator says low, but when I fill it up, the mos… read more
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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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