GM's Active Fuel Managment Syatem

[Iron Horse Racing]

Father in law wants to delete his AFM on his 5.3L in a 2016 Silverado.

Has anyone used Range Technologies AFM disable device? or any other method to disable...

I would assume a mod like this would void warranty?


v8 – Range Technology | AFM Solutions for GM Cars, Trucks & SUVs


PS....looking for information, post your brand bashing in the appropriate post....

 

[tex78]

How come he wants to disable it


Cheap way would be to drive around in tow haul, won't kick in with tow haul on

sent while drinking tea's

 

[Cat401]

How come he wants to disable it


Cheap way would be to drive around in tow haul, won't kick in with tow haul on





that's not true, I am driving my model year 15 with tow/haul mode engaged and it will kick into 4 cylinder mode....6.2L mind you....shouldn't matter though

 

[Iron Horse Racing]

How come he wants to disable it


Cheap way would be to drive around in tow haul, won't kick in with tow haul on

sent while drinking tea's

He heard it will damage his motor, a quick search and there are lots of posts talking about high oil consumption, lifter issues, seems like most of the complaints were from older trucks, but some reports it's still happening...

truck has 15,000 km and has been using a bit over a quart every 5,000, GM tells him its normal....

 

[tex78]

Yep 1 l per 3200 km is max, so it's is still in guide lines

The new engines are so tight on tolerances that they tend to suck some, plus all the pcv pollution crap tends to suck some too and loose oil that way

The 14 and up are totally different birds to the older ones, that yes had lots of issues



Have u ever heard what oil burning on a BMW is for a guideline, 1l per 1000 km and still they say it's ok

Food for thought

sent while drinking tea's

 

[Cdnfireman]

He heard it will damage his motor, a quick search and there are lots of posts talking about high oil consumption, lifter issues, seems like most of the complaints were from older trucks, but some reports it's still happening...

truck has 15,000 km and has been using a bit over a quart every 5,000, GM tells him its normal....

Thats unacceptable. With the modern machining/manufacturing methods and the greater quality of lubricants there's no reason for a modern engine like his to burn oil. (Other than perhaps a very brief break in period).
That cylinder deactivation idea has been problematic for a lot of people. Hopefully he finds a solution.

 

[ippielb]

If I was closer to you, it would be as easy as $200 for a vin license for EFI Live. There's a parameter I would have to change in the DOD, (displacement on demand), that would disable the feature.

 

[MK4TDI]

Father in law wants to delete his AFM on his 5.3L in a 2016 Silverado.

Has anyone used Range Technologies AFM disable device? or any other method to disable...

I would assume a mod like this would void warranty?


v8 – Range Technology | AFM Solutions for GM Cars, Trucks & SUVs


PS....looking for information, post your brand bashing in the appropriate post....

I've heard mixed reviews on the range unit. Some like it and some wish they had just gotten a tune instead.

I've got a 15 with the 5.3 and the 6spd and didn't like the hesitation that came with the AFM or how when it switches between 4 and 8 it feels like the transmission shifts. This is I find is more apparent with the 8spds now too.

For in town driving you can put the gear selector in manual and select gear 5 for the 6 spd's and I'd assume 7 for the 8spds and it keeps the AFM tuned off. Once you Put it in overdrive the AFM will kick back in.

Myself I went with a custom tune from Blackbear Performance. Turned off the AFM, adjusted the speedo for tire size and had the transmission tuned. Night and day difference in the driving, transmission doesn't hunt for gears or get confused shifting anymore. The tuner also backs as a full code reader too which is a very nice bonus. Tunes and adjustments can be emailed back and forth which is also excellent.

I to read up on the lifters giving issues in some vehicles, but didn't think it was that big of a deal. This truck however doesn't burn much oil at all, I add maybe a 1/4 litre in 15000km. With the direct injection though the oil does get darker quicker.

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[X-Treme]

Just a heads up. On the older ones with issues, it was usually due to the lifters being housed in PLASTIC (WTF) "guides". With engine heat, etc, the lifters would spin in those guides. Being roller lifters, this takes out a camshaft REALLY fast.

Disabling DOD is not gonna do anything to combat hard parts failing.

 

[neilsleder]

I've heard mixed reviews on the range unit. Some like it and some wish they had just gotten a tune instead.

I've got a 15 with the 5.3 and the 6spd and didn't like the hesitation that came with the AFM or how when it switches between 4 and 8 it feels like the transmission shifts. This is I find is more apparent with the 8spds now too.

For in town driving you can put the gear selector in manual and select gear 5 for the 6 spd's and I'd assume 7 for the 8spds and it keeps the AFM tuned off. Once you Put it in overdrive the AFM will kick back in.

Myself I went with a custom tune from Blackbear Performance. Turned off the AFM, adjusted the speedo for tire size and had the transmission tuned. Night and day difference in the driving, transmission doesn't hunt for gears or get confused shifting anymore. The tuner also backs as a full code reader too which is a very nice bonus. Tunes and adjustments can be emailed back and forth which is also excellent.

I to read up on the lifters giving issues in some vehicles, but didn't think it was that big of a deal. This truck however doesn't burn much oil at all, I add maybe a 1/4 litre in 15000km. With the direct injection though the oil does get dirtier quicker.

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You add a 1/4 of a litre in 15000km? That should be 3 oil changes! I hope you meant to say 1500.


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[tex78]

Just a heads up. On the older ones with issues, it was usually due to the lifters being housed in PLASTIC (WTF) "guides". With engine heat, etc, the lifters would spin in those guides. Being roller lifters, this takes out a camshaft REALLY fast.

Disabling DOD is not gonna do anything to combat hard parts failing.

No, actually it's the cam had no or very little hardening surface, hence why a cam over the counter is 197 bucks, where a roller 350 vortex cam was 900

Thats unacceptable. With the modern machining/manufacturing methods and the greater quality of lubricants there's no reason for a modern engine like his to burn oil. (Other than perhaps a very brief break in period).
That cylinder deactivation idea has been problematic for a lot of people. Hopefully he finds a solution.

The new oils are too thin, like piss water even cold, they don't have any zddp ( zink, which is the metal to metal contact barriers) all for energy conservation ( like . 5 a % better economy on gas)



sent while drinking tea's

 

[X-Treme]

No, actually it's the cam had no or very little hardening surface, hence why a cam over the counter is 197 bucks, where a roller 350 vortex cam was 900

The 2 that I've done were both spun roller lifters. Both intake. Both on cylinder 6.

 

[tex78]

The 20 plus I have done have all been many different cylinders, vol and non vol

Plus 90 % of them inside the pcv drain oil system was some nasty sh!t, from this new junk oil and oil life monitoring for too long of time to save the junk oil

Some have also been just lifters with cams ok, how many absolutely worn the fawk out tips push rods and rocker arms have ya seen, I've replace too many to count and also think the metal from them is going through system before its filtered

sent while drinking tea's

 

[Cdnfireman]

I don't buy that the newer lubricants are junk. I do agree that the extended oil change intervals happening due to the rediculous "oil life monitors" may be a contributor to the condensation contamination seen inside some engines. Most engines are going way longer now than they ever did before, assuming proper maintenance. Short trip driving and poor maintenance together are bad news. In this climate the oil should be changed a minimum of twice a year, and maybe more depending on mileage and usage.

 

[Pink-Inc]

I don't buy that the newer lubricants are junk. I do agree that the extended oil change intervals happening due to the rediculous "oil life monitors" may be a contributor to the condensation contamination seen inside some engines. Most engines are going way longer now than they ever did before, assuming proper maintenance. Short trip driving and poor maintenance together are bad news. In this climate the oil should be changed a minimum of twice a year, and maybe more depending on mileage and usage.

I agree. If I went by the oil monitor in my diesel I'd be close to 20,000km or more before an oil change. Some may say it's ok but it's against all my morals

 

[MK4TDI]

You add a 1/4 of a litre in 15000km? That should be 3 oil changes! I hope you meant to say 1500.


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No sir that wasn't a typo, I pull an oil sample at 7000 km and 14000km and change at 15000. If you include those two samples I add 12 Oz total of oil between oil changes. I don't have time to be changing oil every 3 weeks in the summer months.

On my 05 5.3 I'd run 20,000 km between changes with oil samples at 6500, 13,000 and 19,500.

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[neilsleder]

No sir that wasn't a typo, I pull an oil sample at 7000 km and 14000km and change at 15000. If you include those two samples I add 12 Oz total of oil between oil changes. I don't have time to be changing oil every 3 weeks in the summer months.

On my 05 5.3 I'd run 20,000 km between changes with oil samples at 6500, 13,000 and 19,500.

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I am to old school to do that lol. My dad drills it in my head to oil is changed at 5000km. When you say you pull oil samples what you do you do? Just pull it out and look or you get it tested?


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[neilsleder]

No, actually it's the cam had no or very little hardening surface, hence why a cam over the counter is 197 bucks, where a roller 350 vortex cam was 900

The new oils are too thin, like piss water even cold, they don't have any zddp ( zink, which is the metal to metal contact barriers) all for energy conservation ( like . 5 a % better economy on gas)



sent while drinking tea's

I dis like the new 5 20 oil way to thin.


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[tex78]

I dis like the new 5 20 oil way to thin.


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Yep, hot summer day it's thinner than water lol

New truck oil in 14 plus 5.3 is 0w20 actually

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[rsaruk]

I have a 14 Sierra with 5.3. I tried putting tow haul mode on and it still switched to 4 cylinders. I change my oil every 10,000 km and oil life monitor still says 30% or more left, that is about every 4 months. I have never had to add oil in between changes.

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