[ArizonaDieselClub]

howdy folks. I am new to diesel trucks and working on them. I decided to give myself a crash course in diesel mechanics by doing a full DEF delete on my 2018 L5P.

Question: I am breaking a number of plastic electrical connectors trying to get them apart. I'm attaching a picture of one that is giving my a real problem. I cannot find any instructions on how these things are unlocked and pull apart.

Any insight is GREATLY appreciated.

cheers.

 

[ArizonaDieselClub]

I've poured over these youtube videos. none of them show this connector. It is quite unique compared to the rest of the connectors. The white part did pull out a bit. I tried to depress and yank apart with no joy. I feel there is some stupid GM tool that depresses into the small holes like an unlock key. I'm pretty much stalled waiting for stealership to open so I can ask their service department.

 

[ArizonaDieselClub]

this is a better pic

 

[ArizonaDieselClub]

GM uses more than a dozen different connectors under the hood. total lunacy. I was thinking the same thing and might just replace the majority of them with a better universal connector like weatherproof anderson connectors.

anyhow, I got it to disengage by applying more pressure with a set of pliers. GM uses the cheapest plastics and garbage designs for all the connections. I replaced my stock ECM with a PPEI unit and the middle connector literally broke apart due to all the engine heat taking its toll on the plastic mechanism; they're like the poor mans zero insertion force (ZIF) sockets.