Guide
Ropode AFM DFM Disabler Install Guide: Five Minutes Under the Dash
Where the OBD-II port hides on a Silverado, Sierra, Tahoe and Escalade, how to seat the module, and how to confirm it actually armed.
6 min read
Blog
Plain-English answers on cylinder deactivation — what it does, what it costs you, and how to switch it off if you decide to.
Guide
Where the OBD-II port hides on a Silverado, Sierra, Tahoe and Escalade, how to seat the module, and how to confirm it actually armed.
6 min read
Comparison
Reversible module or rewritten calibration — cost, warranty exposure, emissions and resale laid out side by side.
5 min read
Troubleshooting
Module not arming, resetting at every start, fighting your insurance dongle — the seven issues owners report and what resolves each.
5 min read
Fitment
Which GM V8s run AFM, which run DFM, and where the changeover happened across the truck and SUV lines.
5 min read
Review
Fuel economy before and after, shift behaviour, and whether the module stayed armed through a winter of short trips.
5 min read
Background
The mechanism behind collapsed lifters, why deactivation is implicated, and what prevention can and cannot achieve.
5 min read