Common Duramax L5P injector connector failure. Terminal fretting corrosion.

Рет қаралды 8,391

11 ай бұрын

Customer states reduced engine power message returning three days after repairs for P2463 P2359code…..see the first video here: Another service regeneration. Duramax P2463 P2459 DPF clogged
• Duramax DPF Regen - P2...
Customer states “it’s the same problem”. Upon inspection and testing is was discovered the vehicle has a new unrelated problem causing P0204, P0300, P0304 codes to set intermittently.
L5P Duramax injector connectors have had a high failure rate as shown in this video. P/N: 19368140
Tags: Silverado Sierra Diesel 6.6L 6.6 Duramax
#mechanic #cars #tipsandtricks #professional #engine

Пікірлер: 21

@DadsGarageDiagnosticSpecialist 11 ай бұрын

See the first video here: Another service regeneration. Duramax P2463 P2459 DPF clogged kzfaq.info/get/bejne/kMCGdt1o05PJoKM.html

@tg9388 5 ай бұрын

Outstanding video thanks for sharing. I just had all of my pigtails installed at 105,000 miles.

@DadsGarageDiagnosticSpecialist 5 ай бұрын

Thanks!

@dustins91s10 3 ай бұрын

You give a good explanation of the what and why. Exactly what I’m seeing on my connection with the dark looking dust. I’ve spoken with my local dealership and they act like this is a new issue. I’ve replaced my #4 pigtail 8 times now with dealer pigtails and now with pigtails from fleece performance. The dealership part definitely last longer as I usually get a month or 2 out of them while I have blown through the 4 fleece pigtails in a month. I’m now considering replacing the injector because my truck is unable to endure a 2-4 hour road trip now without having to replace the #4 pigtail.

@DadsGarageDiagnosticSpecialist 3 ай бұрын

Yes, if you are seeing repeat failures on the same injector, and you have replaced the connector… Most likely you will find worn terminals on the injector itself. Also, be sure you are identifying the correct cylinder. Cylinder 4 is the second one on the driver side, I have seen people replace the wrong one, because a diesel identifies the cylinders differently than the gas engines do. Thank you.

@thejohnboatfaithfishingand8078 6 ай бұрын

When my son replaced that same connector on his Duramax, I inspected the backside of the foam cover and it looked like the cover had been making hard contact with the wire bundle and/or the connector itself for the #4 injector. I could see a shiny worn spot in the area of the wire bundle and connector. So, we're going to take a Dremel with a drum sander and remove some of the material under there where the cover's been making contact. That could very well be transmitting vibration into that wire bundle.

@DadsGarageDiagnosticSpecialist 6 ай бұрын

That is very interesting. Thank you for sharing.

@SmokinJoesPitBBQ 2 ай бұрын

Do you need to clear the codes in order to get it off limp mode after replacing the connector?

@DadsGarageDiagnosticSpecialist 2 ай бұрын

Yes it will usually stay in reduced power mode until the codes are cleared. Thanks.

@debbiekoehn671 Ай бұрын

Great video. No dielectric grease on the connection?

@DadsGarageDiagnosticSpecialist Ай бұрын

Normally I will use di-electric lubricant rather than di-electric grease....the difference is that one is designed for electrical terminals and connectors and the other is designed to insulate against high voltage. P/N: 12377900 Thanks.

@golf25radioman 10 ай бұрын

Totally unrelated question, how do you keep your hands clean! I know, dumb question. But you didn't have gloves on in this video, so...

@DadsGarageDiagnosticSpecialist 10 ай бұрын

Great question. I use gloves a lot of the time for the convenience of being able to quickly take off dirty gloves so I can touch clean surfaces and it keeps my skin protected from all the harsh chemicals that I deal with all day. I wash my hands multiple times per hour all day long sometimes…occasionally my hands get dried out from washing too much so the gloves can help keep the hand washing down too. Thanks.

@fazerider3092 21 күн бұрын

Can someone explain to me why my 2019 l5p and my 06 lbz both have the same injector 4 issue? Had to replace the whole injector on my l5p now not sure about my lbz?

@DadsGarageDiagnosticSpecialist 21 күн бұрын

Very unlikely that anything related is going. The LBZ has injector failures at high mileage intervals. Thanks.

@botopliff 10 ай бұрын

Why doesn’t the factory put dielectric grease on? Seems like it would solve the problem

@DadsGarageDiagnosticSpecialist 10 ай бұрын

They were probably being cheap. Haven’t seen this problem on any of the recent models yet. GM does have dielectric lubricant available for service use, and there is a difference between the dielectric lubricant and the dielectric insulating grease. I remember on a lot of older vehicles most of the under hood connectors had dielectric from the factory…. Fords had the white tacky grease in them, but they weren’t the only ones doing it. I wouldn’t be surprised if it was a cost cutting measure. Thank you.

@bjenkins803 7 ай бұрын

@DadsGarageDiagnosticSpecialist My 2020 just threw a code for number 4 injector. So they haven't done anything to fix this issue. Dealer wants 800 bucks. I'll be doing that myself lol.

@DadsGarageDiagnosticSpecialist 7 ай бұрын

@@bjenkins803Very very common. If you are willing and able… That’s what this video and my channel is all about. Thanks for sharing.

@bjenkins803 7 ай бұрын

@DadsGarageDiagnosticSpecialist I replaced the connector today. Fixed the problem and thanks for the video help.

@DadsGarageDiagnosticSpecialist 7 ай бұрын

@@bjenkins803 you’re welcome. Thank you.