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Duramax Fifth Generation: 2011-2016 (LML) Discuss the fifth generation (2011-2016) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.

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Old 11-02-2019, 11:55 AM   #1 (permalink)
wberg
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2015 LML

Anyone know whats wrong with my 2015 gmc sierra LML codes B2AAA, P01D1,P01D2,P01D3,P02D9, P02DB? Dealer has call in for recommendation from GM. GM has not replied.

Truck is stock not deleted

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Last edited by wberg; 11-02-2019 at 11:57 AM.
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Old 11-02-2019, 12:00 PM   #2 (permalink)
OkDually
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Here is a thread with some info on the B2AAA code:
https://www.dieselplace.com/forum/63...lly-p0420.html



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Old 11-02-2019, 06:44 PM   #3 (permalink)
wberg
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Dealer just told me GM engineer asked the tech to pull fuel tank and check for a restriction. They have replaced my complete fuel system and I installed a lift pump. Air dog company told me the lift pump can't restrict without clogging the filters. And filter are ok.
Any help is appreciated.
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Last edited by wberg; 11-02-2019 at 07:00 PM.
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Old 11-02-2019, 09:14 PM   #4 (permalink)
rubix
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Probably your CP4 pump has failed, prepared to get bent over by GM. Join the class action lawsuit after you spend $8000
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Old 11-02-2019, 10:16 PM   #5 (permalink)
wberg
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pump and injectors replaced in Sept
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Old 11-15-2019, 03:50 PM   #6 (permalink)
wberg
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Quote:
Originally Posted by wberg View Post
Anyone know whats wrong with my 2015 gmc sierra LML codes B2AAA, P01D1,P01D2,P01D3,P02D9, P02DB? Dealer has call in for recommendation from GM. GM has not replied.

Truck is stock not deleted
Dealer said airdog lift pump showed 12 lb pressure
going to by pass lift pump and see if codes don't reoccur.

Airdog tech said if pump put out to much pressure there would bea fault code for Fuel Pressure Regulator.FPR not injectors out of limit codes.
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