AFM Range Disabler - GM Truck

[MengRanger]

After running this device in my GM Trucks for many years, I was surprised to find out they do not have the updates so I can run it in my 2023 vehicle. Anyone know if GM changed their software or if there is another option to disable the Automatic Fuel Management? Thanks

[mactlman]

should be a new model for new trucks diablo also makes a tuner to disable it --new system is dfm so look for that maybe?

[jbh3]

Pretty sure Range makes a device to disable AFM on the new(er) GM's. It's not as simple as plugging a module into the diagnostic port on the new models. Go to the Range site and plug in your truck info.

[Dave B]

Pulsar LT if you have a 6.2.

[MengRanger]

Range sent me an email that they did not have a product for 2023's. I will look at Diablo. Thanks
Nothing from Diablo for the 5.3 either. Strange.

[berudd]

I'd reconsider the need. My 2008 GMC never lost a lifter up to around 130k miles but it did use oil, one of the cons of that era AFM. But, my 2018 has almost 90k miles on it now and does not use oil at all. The current generation of engine is not the same as what they used to run. I don't know the specifics, but based on my experience and what I have heard from other sources, the AFM seems to be trouble free now. But, I'm sure others will disagree.

[printman71]

I have a 2023 Chevy with the 5.3. Last time I looked, nothing was available.

[kojimep]

I'd reconsider the need. My 2008 GMC never lost a lifter up to around 130k miles but it did use oil, one of the cons of that era AFM. But, my 2018 has almost 90k miles on it now and does not use oil at all. The current generation of engine is not the same as what they used to run. I don't know the specifics, but based on my experience and what I have heard from other sources, the AFM seems to be trouble free now. But, I'm sure others will disagree.

I'm one that will disagree. I had a 2015 Sierra with the 6.2. At 102k the lifter spun, wiped the cam and trashed the block. A 2023 would still be the same, except it now has 8 afm lifters instead of just 4. I wouldn't take the chance.

[ThomasD]

Nothing on the market yet for the '22 refresh and up from any one yet from any of the tuners

[Kicktheirbass]

Nothing on the market yet for the '22 refresh and up from any one yet from any of the tuners

I'm running my range pulsar LT in my refreshed 22 RST that I had in my 21 High Country with no problems. My truck wasn't equipped with DFM from the factory....just wanted to do away with the auto start/stop pain cause I'd always forget to turn it off

[1BADAIR]

I think they are now Global B which HP tuners just cracked

[mactlman]

I'm one that will disagree. I had a 2015 Sierra with the 6.2. At 102k the lifter spun, wiped the cam and trashed the block. A 2023 would still be the same, except it now has 8 afm lifters instead of just 4. I wouldn't take the chance.

correction. it has 16 instead of 8. Even worst

[MengRanger]

After a lot of research, it appears that if you keep it in L9, DFM / AFM is not active. That would seem like a very cheap option.

[printman71]

After a lot of research, it appears that if you keep it in L9, DFM / AFM is not active. That would seem like a very cheap option.

I have read that several places as well.

[plbass]

What's L9 ?

[Billdoe708]

I thought they had something available for 22s now just not 23s?

[clayshooter]

What's L9 ?

9th gear on a 10 speed tranny