HELP with removing DEF/ urethra injector for replacement - Chevy and GMC Duramax Diesel Forum
11-16 LML Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission, Etc.

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post #1 of 18 (permalink) Old 12-09-2019, 09:38 AM Thread Starter
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HELP with removing DEF/ urethra injector for replacement

I have a 12 LML that is showing Exhaust fluid quality poor message and at this point I'm limited to 55 MPH so driving a borrowed vehicle.
I took it to a shop since I haven't been able to clear that message I've done the RFQT test a few times and always fails I ran through the full battery of tests where I do a service regen then the RFQT but it still fails. The downstream Nox sensor is normally about 70% less (120 UP and 30 down) but its still failing.

Mechanic thinks issue is with the Def injector the stream might not be clean / good shop was closing so I just ordered one from Rock auto waiting for it to arrive today but the Magical question is how do you remove the injector so I can try and actuate the injector outside the vehicle to see if it is truly bad or not. The below picture shows how I removed the locking plate. I've tried to twist and pull but the injector isn't coming out am I missing a release spring or something?

There were some ECM updates that were also done but still no change.

I just want to remove the injector and test it to see if it is actually spraying. I can disconnect the line and actuate the pump and it will pump out the fluid no issues.

I'm open to ideas on how to remove this or what else i can try / do. I do have a hand held scanner that can do everything the Tech 2 is able to do.
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2012 Chevy Silverado 2500 Silver.

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post #2 of 18 (permalink) Old 12-09-2019, 12:32 PM
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What scanner do you have that can do everything a Tech 2 can?
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post #3 of 18 (permalink) Old 12-09-2019, 12:58 PM Thread Starter
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Originally Posted by Nitro Junkie View Post
What scanner do you have that can do everything a Tech 2 can?

From Amazon its the Launch X431 PROS Mini Bi-Directional Diagnostic Scan Tool Full System Automotive

I can NOT update firmware but can run tests and see sensors and all that fun jazz

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post #4 of 18 (permalink) Old 12-09-2019, 01:16 PM
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Originally Posted by mario430 View Post
I can NOT update firmware
That's the part I was wondering about.
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post #5 of 18 (permalink) Old 12-09-2019, 09:47 PM
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I am wondering about the "urethra injector". I might be wrong but all us little boys have an injector😜

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post #6 of 18 (permalink) Old 12-10-2019, 07:30 AM
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Bruce Jenner could probably advise on removing your urethra.


I’m sorry I couldn’t pass up that joke Found this on YouTube

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post #7 of 18 (permalink) Old 12-10-2019, 08:30 AM
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I figured you or Hook would respond first!

2019 Chevrolet 4500HD CC 4X4 Flatbed
2018 Chevrolet 1500 CC 4X4 High Country 6.2 liter
2019 Chevrolet 3500HD CC 4X4 Flatbed--SOLD
2011 Peterbilt 337 hauler with 360HP 8.3 Cummins--SOLD
1957 GMC 1 ton flatbed with 22K original miles.
3 different Kubotas
2003 Chevrolet 2500HD CC: 2011 Chevrolet 3500HD CC 4X4 and 2013 3500HD ex. cab 4X4-- all sold.
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post #8 of 18 (permalink) Old 12-10-2019, 10:49 AM
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Quote:
Originally Posted by sambor View Post
I am wondering about the "urethra injector". I might be wrong but all us little boys have an injector😜

Sounds painful don't it?
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post #9 of 18 (permalink) Old 12-10-2019, 06:07 PM
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Originally Posted by long-time-dmax View Post
Sounds painful don't it?
Rule 34 of the internet.

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post #10 of 18 (permalink) Old 12-11-2019, 08:11 AM Thread Starter
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Originally Posted by Ineedabiggertrailer16 View Post
Bruce Jenner could probably advise on removing your urethra.


I’m sorry I couldn’t pass up that joke Found this on YouTube
https://m.youtube.com/watch?v=PmQgP7CxG4I
Ironically that is the video I was watching but the damn thing wouldn't come out so that is why I was asking if I'm missing something else.

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