Keep dfm or disable

Jmccracken1214 · December 4, 2020

Does anyone know of the DFM is causing the issues that AFM caused? I’ve got 11k miles on my 2020, debating to get the module to disable it.

econometrics · December 4, 2020

I'm unaware of any problems directly associated with DFM so far. Pretty good, since the engine has been out for 3 years now.

Edited December 4, 2020 by econometrics

BlancoSilverado · December 5, 2020

I have 29K miles on my truck and haven't had any problems with DFM (hopefully never). I don't believe I will disable it, unless I have a problem right before warranty then I will.

RWTJR · December 5, 2020

I have a Range unit that disabled the AFM on my Colorado. When I bought my Silverado, Range reprogrammed it for me so it would disable my DFM (great customer service). I only have 1000 miles on my Silverado and I have not installed the DFM Disabler. I have not even noticed the DFM on my SIlverado. I will give it shot as some point to see if I notice a difference.

JMHO

No expertise implied or expressed

f8l vnm · December 5, 2020

Zero issues on my 19 with DFM. No need to touch or tune it is my personal opinion. Why even remotely risk something going wrong and GM voiding my warranty.

Jay P · December 5, 2020

I think the engine responds better/faster with it disabled. If you want to feel the difference drive in manual 9 for 10 speed or 7 for 8 speed and DFM is disabled.

Jay