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2014+ AFM (Active Fuel Management)

Ron.s

By Ron.s
in Engines & Drivetrain

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krzyd Enthusiast

krzyd

Posted
Posted
On 11/10/2017 at 8:35 PM, chris-i said:

What parts do you have to change in the motor to permanently delete afm? Cam? Also any good brands/part numbers of parts required?
Thanks for the help

Sent from my SM-G903W using Tapatalk
 

I'll get you a parts list, my mechanic is installing a supercharger and mechanical AFM delete next week. 

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oldmann
oldmann

Why are people so concerned about this topic. I do not understand it. Just drive it. End of story. And yes, even if you can't figure out why the truck has it, it is to save fuel.

pm26
pm26

No, it does not. Not even close. The only Cadillacs that possibly exceeded the weight of 2014 GM crew cab 1500 4x4 pickups were the old land yachts (1976 and older) models. I believe that a 1976 Ca

seamonster
seamonster

Whats up with the name calling?   Cant you see we agree----the AFM feels like a gear shift!   Many people want 6 and 8 speed tranny and then complain they can feel AFM. That is what I dont unders

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chris-i Enthusiast

chris-i

Posted
Posted
I'll get you a parts list, my mechanic is installing a supercharger and mechanical AFM delete next week. 
Ok thanks

Sent from my SM-G903W using Tapatalk

  • 2 weeks later...
dgstarr63 Enthusiast

dgstarr63

Posted
Posted (edited)

I need advice from a GM dealer mechanic: I installed a Range last month in my 2015, 5.3, 6 speed.  It works as advertised and is always in the V8 mode.  Drive ability is the same, you don't notice any difference. The problem is that the fuel mileage is down about 10%.  Are these late model Eco tech 3 engines really having problems, like the earlier trucks?  I am considering removing the Range, what do you think?

 

Thanks, Dave

Edited by dgstarr63
engine description correction
Colossus Senior Enthusiast

Colossus

Posted
Posted

It does make that big of a difference, Dave.  Sad to say. 

F4Gary Enthusiast

F4Gary

Posted
Posted
On 2/16/2018 at 6:05 PM, dgstarr63 said:

I need advice from a GM dealer mechanic: I installed a Range last month in my 2015, 5.3, 6 speed.  It works as advertised and is always in the V8 mode.  Drive ability is the same, you don't notice any difference. The problem is that the fuel mileage is down about 10%.  Are these late model Eco tech 3 engines really having problems, like the earlier trucks?  I am considering removing the Range, what do you think?

 

Thanks, Dave

Of course it's going to get less mileage.  What did you expect, it disables the fuel saving feature (V4) of the engine.

dgstarr63 Enthusiast

dgstarr63

Posted
Posted

My question was : If I don't see any difference in the way it performs, is their any reason to continue using the range?  In other words, will the using the AFM shorten engine life on a 2015 5.3?

 

Dave

Rob Okray Enthusiast

Rob Okray

Posted
Posted

Seems like I need to delete V4 mode. It dos not bother me, but I don't want to launch a motor either.

Rob Okray Enthusiast

Rob Okray

Posted
Posted
22 minutes ago, dgstarr63 said:

My question was : If I don't see any difference in the way it performs, is their any reason to continue using the range?  In other words, will the using the AFM shorten engine life on a 2015 5.3?

 

Dave

Earlier in the thread there were some ominous tales of lifter damage and piston ring issues. Factual or not, the idea of half the engine just going along for the ride does not sit well with me. The more I think about it, the less I like it. In the end, It's my truck and I decide what is best.

  • 3 weeks later...
Mileguru Enthusiast

Mileguru

Posted
Posted

I have a 2017 Sierra Crew Cab 6.2L 8-speed that I'm putting a Magnuson TVS1900 on. I'll have the AFM tuned to be off. My question is whether or not just tuning the AFM out is good enough, or do I have to do the whole DOD/AFM Delete thing?

  • 5 weeks later...
Bill Reinhardt Enthusiast

Bill Reinhardt

Posted
Posted
On 3/7/2018 at 12:03 AM, Mileguru said:

I have a 2017 Sierra Crew Cab 6.2L 8-speed that I'm putting a Magnuson TVS1900 on. I'll have the AFM tuned to be off. My question is whether or not just tuning the AFM out is good enough, or do I have to do the whole DOD/AFM Delete thing?

Tuning it out is good enough

  • 3 weeks later...
jgraves13 Enthusiast

jgraves13

Posted
Posted

Has anyone used a range with the newest software on a 2017-2018? Wondering if they are still plagued with the stabilitrak CELs. If they have this issue fixed, I may look into getting one.

bkesting Enthusiast

bkesting

Posted
Posted
On 4/22/2018 at 4:25 PM, jgraves13 said:

Has anyone used a range with the newest software on a 2017-2018? Wondering if they are still plagued with the stabilitrak CELs. If they have this issue fixed, I may look into getting one.

I had an older Range unit sent in and got the latest firmware upgrade. Been running it on my 2016 Silverado for the last four months with no issue at all.

  • 2 months later...
Rally_18 Enthusiast

Rally_18

Posted
Posted

So I started reading through this thread but man it’s a long one. So I asked a question you may all yell at me cause I’m sure it’s been answered before. Is there any way to turn off afm without voiding the warranty. I read somewhere that the range was untraceable which would allow you to take it off and be fine. I also heard a lot of people having issues with the range thing too. I need some input. Thanks


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jgraves13 Enthusiast

jgraves13

Posted
Posted
So I started reading through this thread but man it’s a long one. So I asked a question you may all yell at me cause I’m sure it’s been answered before. Is there any way to turn off afm without voiding the warranty. I read somewhere that the range was untraceable which would allow you to take it off and be fine. I also heard a lot of people having issues with the range thing too. I need some input. Thanks


Sent from my iPhone using Tapatalk


It is untraceable, and software updates have fixed the problems. Many members have them on newer trucks and don't have any issues


Sent from my iPhone using Tapatalk
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