Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

tune out DFM

Recommended Posts

Anybody know of anybody or a shop  that can unlock the locked ECM and tune out DFM for my 5.3 l84. 2019 Silverado.  In California or neighboring states…. I’m not allowed to order the Diablo tuner  and ECM unlock service. Shipped to me like the rest of the country, because California CARB says I can’t. 

I’ve been using the range OBD but that thing doesn’t always work 100% of the time to keep DFM OFF. pulsar LT seems like the same thing it just blocks the signal. I need a real tune to eliminate it entirely from its programming, then later do a Hard delete with non DFM lifters etc later. 

Edited by 11bravoZ71
Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.