AFM/DFM Disabler for 2025 models

[DontTaseMeBro]

Folks its the same question, same answers since "Global B" started rolling out ECU's form 20-23. The ECU is encrypted. Still, as of now the only way to do it is 2 things:
1. Send in your ECU to get a custom unlocked one, (e.g. L87 E90 ECU's https://www.hptuners.com/product/gm-e90-ecm-service-global-b/)
2. Complete a mechanical DOD Delete (https://www.michiganmotorsports.com/lifters-and-pushrods/afm-dod-lifters-and-deletes). I was quoted $9,000 to have this done in Indiana.

IF YOU HAVE A WARRANTY DO NOT DO THIS, IT WILL VOID YOUR WARRANTY. You're going to need it, because GM Engines are failing for many other non-DOD reasons (sand left in blocks, improper clearances, leaking heads, etc).

Yes, a GM tech can deactivate DOD (but not mechanical). They won't do it for you permanently though, because ECU flashes are tracked to the tech, and they'll get fired.

So what can you do?
- Get an auto-stop disabler, they work, and no tech has said anything to me about it.
- If you have an L87, check and change your precious synthetic oil way more often than you think. L87's are running hot these years, mine churns AMSoil Signature Gold into a black silk in about 2500 miles. Yup my 2023's second engine is already dying.

I’m curious what symptoms your second engine is exhibiting that point to its eventual failure?

 

[Fairweatherider]

How can I tell if I have an L87 engine? All I know is my engine is a 5.3

 

[PPV_2018]

How can I tell if I have an L87 engine? All I know is my engine is a 5.3

there’s your answer .. you don’t.. L87 is 6.2