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DEF on 2013 diesel,warning says exhaust fluid poor quality
DEF on 2013 diesel,warning says exhaust fluid poor quality reduced speed of 55 in 44 miles, dealership has install 4 different sensors now they say exhaust filter $ 2500.00 … read more
Roy
Roy
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We got the error code p2493 and it says see owners Manuel
We got the error code p2493 and it says see owners Manuel and it will reduce our speed in 133 miles. We are in the middle of Kansas and it is a holiday night. How can we reset it and How far can we dr… read more
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david craig
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Let my DEF get low and a message came up and max 55mph
Let my DEF get low and a message came up and max 55mph locked in...how do I reset it? … read more
Daniel Chaidez
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I just changed the fuel filter on my 2016 duramax, I started
I just changed the fuel filter on my 2016 duramax, I started it up to check for leaks and had left the air intake off. I now have a check engine light and reduced power warning. how can i reset. … read more
MastertechRob
MastertechRob
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I just purchased a 2018 Chevy Silverado 2500 z71 duramax
Hi , I just purchased a 2018 Chevy Silverado 2500 z71 duramax diesel. Driving it home it says reduced power. How do I fix this … read more
EricFromCT
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I live in CA and recently bought from seller in Colorado a
I live in CA and recently bought from seller in Colorado a 2015 GMC Denali Duramax Diesel with 50,000 miles. Now at 57,000 miles the "service diesel exhaust fuel system" message came on saying I have … read more
Ted G.
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2014 duramax, message said poor def quality, power was
2014 duramax, message said poor def quality, power was reduced to 65 then 55. Dealer tested quality and OK. Replaced injector and heater. They are unable to clear the power reduced mode and have no tr… read more
Mike
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I get a message that says "do not exceed 65 mph". Truck is
I get a message that says "do not exceed 65 mph". Truck is jacked up high. just bought it … read more
Eric
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2012 chevy 2500 hd with a 6.6 has message check emission
2012 chevy 2500 hd with a 6.6 has message check emission now, I checked def fluid and is full ,also removed def tank and checked the heater, which checks fine, what else would cause this message … read more
GM Tech (Cam)
GM Tech (Cam)
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We paid over $1,000 to replace (3) knock sensors on our 2014
We paid over $1,000 to replace (3) knock sensors on our 2014 2500HD Duramax Diesel truck and still have the same problem with the Stabilitrak and DEF error messages. We have currently 91 miles left to… read more
Pete
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I'm like the other nimrod that had his head somewhere else.
I'm like the other nimrod that had his head somewhere else. Brand new truck. Filled it was gas! … read more
JOHN aka Eauto
JOHN aka Eauto
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My 3500 Silverado had the Check Emissions indication and 150
My 3500 Silverado had the Check Emissions indication and 150 miles till 65mph. I read the codes. Turbocharger and Nitrous oxygen sensor. My Chevy dealer fixed the sensor and turbocharger issues. But t… read more
TIM MOHR
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Just put in def and it's not resetting. 3500 Chevy Duramax
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Anthony Uzmack
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Emission system, 65 mph max speed is on screen. We don't
Hi emission system, 65 mph max speed is on screen. We don't have time to be checked. On road now and our lively hood depends on this truck right now. we sell Christmas trees and on way to get load now… read more
Jared D
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I'm having an issue with my 2015 Chevy 2500 DuraMax DEF
Hello I'm having an issue with my 2015 Chevy 2500 DuraMax DEF system. I filled it up at a pump on my way to San Antonio Fri. After driving approximately 100 miles the poor quality exhaust fluid messag… read more
Roy
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Have a 2012 chevy 2500 with lml duramax. dash showed
have a 2012 chevy 2500 with lml duramax. dash showed "exhaust fluid poor quality" drained the def tank and refilled with new fluid, and replaced both n0x sensors. did a ruductant quality test with the… read more
Jared D
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Chevrolet Silverado 2500HD: I have a 2007 Duramax that the
I have a 2007 Duramax that the Clean DPF message keeps coming up. When it does my fuel mileage drops to 5-6 mpg. It is normally 12.7-13.8 with the driving I do. To clear the message it takes driving a… read more
Matt
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2005 Chevy: the check Engine light came..reduced..engine speed
We have a 2005 Chevy Silverado. About 2 years ago, the "check Engine" light came on and then it said "reduced engine speed". We took it to the dealer and they said a sensor went out and they replaced … read more
Tim's Auto Repair
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Meet the Experts:

GM Tech (Cam)

GM Tech (Cam)

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Tim's Auto Repair

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Dave Nova

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Don - Mo Lurch

Don - Mo Lurch

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Jerry Newton

Jerry Newton

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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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