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P205b. I've reset once and it reappeared today. 3500 15.
P205b. I've reset once and it reappeared today. JA: What is the model/year of your GMC? Customer: 3500 15 JA: Are you fixing your 3500 yourself? What have you tried so far? Customer: Looking for direc… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
Service exhaust fluid light came on read the code and it
Service exhaust fluid light came on read the code and it said reluctant heater we replaced that but do not know how to reset the system, engine is limited to 4 mph. … read more
JFN1
JFN1
ASE Certified Technician
Vocational, Technical or Trade Scho
272 satisfied customers
Dec. Def says empty it's full is there a reset. 2015
Dec JA: What is the model/year of your GMC? Customer: Def says empty it's full is there a reset JA: What year is your GMC? Customer: 2015 Silverado 2500 duramax JA: Are you fixing your Silverado yours… read more
JFN1
JFN1
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Vocational, Technical or Trade Scho
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I have a 2015 GMC Denaili 2500hd the exhaust fluid is
Second opinion] I have a 2015 GMC Denaili 2500hd the exhaust fluid is showing 42 miles before dropping to 4 mph what can I do… read more
Gm Tech (Cam)
Gm Tech (Cam)
GMC Mechanic
Vocational, Technical or Trade Scho
1,823 satisfied customers
Check engine light is on. got a 21dd code. Stays on. 2015
gonna fix it myself. haven't tried anything yet. says the def tank heater circuit is the prob … read more
Ron
Ron
ASE Certified Technician
Vocational, Technical or Trade Scho
39,117 satisfied customers
I have a 2013 GMC Denali Sierra HD and it shows engine codes
I have a 2013 GMC Denali Sierra HD and it shows engine codes p205B and p21DD. I know both deal with reductant heater issues. One is the heater and one is the sensor. If the sensor fails, will that sho… read more
Eric
Eric
Retired
N/A
14,436 satisfied customers
2011 duramax engine code P205B, code P205B have reset it 1
will try to fix it myself since GM wont take care of it … read more
Pete
Pete
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Vocational, Technical or Trade Scho
138 satisfied customers
My 2002 Sonoma crew cab 4.3 4x4 started to run rough and the
My 2002 Sonoma crew cab 4.3 4x4 started to run rough and the "check engine light" came on. The mechanic changed (2) O2 sensors, the catalytic converter and the fuel pump. The truck again did the same … read more
kalamykid
kalamykid
Pactor automotive
Vocational, Technical or Trade Scho
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DF is full but in power reduction mode 55mph limit, 2011
DF is full but in power reduction mode 55mph limit … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
4wd service light is on replaced switch worked fine for few
4wd service light is on replaced switch worked fine for few days and light came back on. now stuck in 4wd … read more
Gary
Gary
ASE Certified Technician
Vocational, Technical or Trade Scho
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2015 GMC Duramax. Turn ignition key on and everything lights
2015 GMC Duramax. Turn ignition key on and everything lights up as it should. Gauges adjust to correct readings etc. Turn key to start and everything goes out and starter doesn't even try to work, lik… read more
Dan
Dan
Auto Mechanics 1&2/diesel mech
Resetting the exhaust fluid light on a 2500 hd, we replaced
we replaced the reductant heater and float and the light for exhaust service is flashing and truck cant go over 55 … read more
BOBBYSS
BOBBYSS
TECHNICIAN/ADVISOR
Associate Degree
8,343 satisfied customers
Service exhaust fluid system see owner's manual. Speed
Service exhaust fluid system see owner's manual. Speed limited to 55 miles an hour talk to GMC dealer he said it needed a new exhaust fluid tank because some of the sensors were bad couldn't just chan… read more
Jared D
Jared D
Shop Supervisor
Bachelor's
3 satisfied customers
GM 3500 hd: 2013 gmc 3500hd, reductant tank heater went out,
2013 gmc 3500hd, reductant tank heater went out, replaced it no has service exhaust fluid see owners manual on dash. ???… read more
Michael Moore
Michael Moore
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Associate Degree
1,323 satisfied customers
GMC 2003: In my 2003 gmc sierra 6.6 diesel the fuel gauge is
In my 2003 gmc sierra 6.6 diesel the fuel gauge is not working is in the low gas position and sometimes went I put gas it going up and show me how much gas I have and them return to low fuel position … read more
Michael Moore
Michael Moore
Team leader, bumper to bumper tech.
Associate Degree
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GMC Yukon Denali: I have a 2003 Yukon Denali. We have noticed
I have a 2003 Yukon Denali. We have noticed several issues come up lately and one major one. After doing some research on the internet, it appears the Throttle Position Sensor is not working correctly… read more
Pete
Pete
Independent Auto Technician
Vocational, Technical or Trade Scho
138 satisfied customers
GMC Sierra 1500: does 2001 gmc sierra 1500 built in canada
does 2001 gmc sierra 1500 built in canada have a evap. vent solenoid. cant find it on my truck? have a PO449 code and all the diagrams online dont look the same as this truck… read more
goodwrench9124
goodwrench9124
Lead Tech/ Shop Leader
Vocational, Technical or Trade Scho
2,571 satisfied customers
GMC: Hi I have a 2003 GMC silverado and it has been sitting
Hi I have a 2003 GMC silverado and it has been sitting in the drive way because it wont start I hav ben told that the fuel return pump is gone and the fuel is being returned to the tank and not to the… read more
Hal
Hal
owner/service tech
Vocational, Technical or Trade Scho
848 satisfied customers
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Gm Tech (Cam)

Gm Tech (Cam)

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Gary

Gary

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Ron Z.

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George H.

George H.

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