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Filled lmy 2012 Duramax with DEF. It was 13 miles until
Filled lmy 2012 Duramax with DEF. It was 13 miles until reduced speed of 65 MPH. Started up and drove around the block. It did not reset. How do I reset? … read more
Gm Tech (Cam)
Gm Tech (Cam)
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Vocational, Technical or Trade Scho
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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
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John 2011 gmc 2500 duramax, def heater fault, and service
hi john 2011 gmc 2500 duramax, def heater fault, and service def system see owners manual now, reduced speed to 55, i replaced heater and cleared fault, that is good now, however the reduced speed is … read more
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Pete
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I have a 2011 GM Sierra 3500hd with the duramax lml engine.
I have a 2011 GM Sierra 3500hd with the duramax lml engine. I have a service exhaust message and another that says on next fill up I will be limited to 4 MPH. I think the problem is the reductant heat… read more
Gm Tech (Cam)
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Exhaust fluid system will not reset. About 66000. 2016 Chevy
now I have a service prompt It's telling me 77 miles to 65 mph and to see owners manual… read more
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Gabriel Grey
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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
Roy
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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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2012 gmc denali 2500 duramax. the "service exhaust fluid
2012 gmc denali 2500 duramax. the "service exhaust fluid system" indicator came on. went to max xpeed 65, then to max speed 55, now in 65 miles it will go to 4mph. Had a bad battery and changed it. Ha… read more
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Tim Mohr
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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
Chad Farhat
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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
Chris Carr
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Have a 2015 gmc 3500 and i. And i put def fluid in before it
and i put def fluid in before it showed reduced speed to 65. How can i reset it back to normal … read more
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2015 duramax that has full Def tank and dash warning wont go
2015 duramax that has full Def tank and dash warning wont go away, any thoughts … read more
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Service Def system warning speed reduced to 55 we are
Service Def system warning speed reduced to 55 we are traveling anyway to bypass it? … read more
Gm Tech (Cam)
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I have a Service Exhaust Fluid System light on. Not sure
Hi, I have a Service Exhaust Fluid System light on. Not sure what it means. … read more
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2013 GMC Duramax has service exhaust fluid system message.
2013 GMC Duramax has service exhaust fluid system message. Tank has DEF in it. What is the cause of this and how do you 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
Pete
Pete
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General auto certifications
33,185 satisfied customers
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
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Roy
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Gm Tech (Cam)

Gm Tech (Cam)

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