New Purchase of 2013 - How do I turn off AFM?

MDJR · Feb 20, 2018

After driving it for two hours this weekend I think I'm going to buy the range device. It was bugging me going from v8 to v4 while I was driving it. After last fill up were getting close to 13-14 mostly city suburbs so I guess that it normal especially in the winter. Thanks.

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Chuck_Finley · Feb 20, 2018

I didn't know much about the AFM when I first got my Tahoe but after reading about it I noticed it and bothered the hell out of me so I had to disable it.

Here's one on ebay going for $90... https://www.ebay.com/itm/Range-AFM-Chip/122973725054?hash=item1ca1ce217e:g:OeQAAOSw38BadOXu&vxp=mtr

PG01 · Feb 20, 2018

Chuck_Finley said:
I didn't know much about the AFM when I first got my Tahoe but after reading about it I noticed it and bothered the hell out of me so I had to disable it.

Here's one on ebay going for $90... https://www.ebay.com/itm/Range-AFM-Chip/122973725054?hash=item1ca1ce217e:g:OeQAAOSw38BadOXu&vxp=mtr

Gotta be careful though, i have read about some people complaining that it stops working every so often. I never experienced it with mine and it was plugged in for about a year with no issue.

Floep · Feb 20, 2018

Also make sure it is the latest update in the Ranger.

MDJR · Feb 20, 2018

Can they be updated or do they come add they are

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CobraKing · Feb 20, 2018

MDJR said:
Can they be updated or do they come add they are

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You have to ship them back to Range Technology in order to have the devices updated. Not sure if there might be a charge if you try to do this with a second hand device though.

An ebay seller has new devices for sale and he's listed the software version as V8.4R1:

https://www.ebay.com/itm/RANGE-TECH...e=STRK:MEBIDX:IT&_trksid=p2055119.m1438.l2649

jhax01 · Feb 25, 2018

Just to add to what the others said, turning it off is no guarantee. Had mine disabled on my 2013 Burb since 50,000 and last week at 102,000 one of the lifters compressed catastrophically while on the highway. You’ll know if/when it happens because it’s the worst valve tick you ever heard in your life. Seems pretty random, the engine made no noise previously and didn’t burn any oil between changes. If you do the mechanical delete eventually, the kits are ok but charge a premium. You can save a couple hundred (depending) by buying the parts separately through a GM parts wholesaler.

My two cents on disabling it would be to find a used diablosport I-1000 vs the range device, then you could also have some rudimentary tuning ability as well.

MDJR · Feb 25, 2018

Thanks for the good news lol. Seems like this just happens and we're all playing the odds. I just hope we pay it off before having major issues.

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PG01 · Feb 25, 2018

No, there’s nothing wrong with these motors, the afm is an awesome feature and the lifter design, no words to describe....thank you GM, thank you.

iamdub · Feb 25, 2018

MDJR said:
Seems like this just happens and we're all playing the odds.

Troof. It's pretty much a thing of when more than if.

New Purchase of 2013 - How do I turn off AFM?

MDJR

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Chuck_Finley

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PG01

Floep

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MDJR

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CobraKing

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jhax01

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MDJR

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PG01

iamdub

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