Jump to content

2014 chevy Silverado active fuel management

skunkstripe

By skunkstripe
in Engines & Drivetrain

Recommended Posts

skunkstripe Enthusiast

skunkstripe

Posted
Posted

I have been reading on the net. that the active fuel management uses oil over time. I was wondering if that is something that they have addressed in the new 2014 silverado 5.3s. Or is it an on going problem. Or just people complaining who has abused there trucks. Just wondering. Thanks again .

  • Replies 43
  • Created
  • Last Reply
pm26 Senior Enthusiast

pm26

Posted
Posted

GM had problems with the AFM system in the past and some trucks were using oil due to bad design of the system. It is likely that they eliminated the oil burning problems by now, but I do not know that for a fact. Some people still complain about rough switching between 4 and 8 cylinders. Some trucks appear to be better than others in this category.

MTB Enthusiast

MTB

Posted
Posted

In the 2007 that I drove for six years it would use a quart at about the 5K mile mark. Seeing that I used synthetic oil I only changed when the oil life would drop below 20% and I routinely got 6K-7K miles between oil changes. I suppose that had I changed on the every 3K that I have in every other truck I have ever owned I would not have known or noticed....

 

Now the rear main that started leaking at 125K miles is a different story and is probably why I am driving a 2014 now.

fondupot Senior Enthusiast

fondupot

Posted
Posted

If you are concerned about oil consumption there is a company that makes a module that plugs into the ODBII port that disables AFM without a full on custom tune.

 

Range Technology. Currently the module is "beta" testing for 2014 trucks, but I just got mine and it works like a charm.

bladz1454 Enthusiast

bladz1454

Posted
Posted

Hey Fondu, let us know how it impacts the MPG when you have a chance. I was looking at the same module and noticed theres one for better MPG but it just makes no sense turning our trucks into 4 bangers

shotmark Enthusiast

shotmark

Posted
Posted

If you are concerned about oil consumption there is a company that makes a module that plugs into the ODBII port that disables AFM without a full on custom tune.

 

Range Technology. Currently the module is "beta" testing for 2014 trucks, but I just got mine and it works like a charm.

works indeed i got mine and its beast.. can deff feel a difference

mzodarg Senior Enthusiast

mzodarg

Posted
Posted

works indeed i got mine and its beast.. can deff feel a difference

So how is it a beast when all the Range does disable the AFM (DOD)................Really!

fondupot Senior Enthusiast

fondupot

Posted
Posted

Hey Fondu, let us know how it impacts the MPG when you have a chance. I was looking at the same module and noticed theres one for better MPG but it just makes no sense turning our trucks into 4 bangers

 

Word, I will. Only used it for about 20 miles so far. So no telling the difference, other than it stays in V8 all the time. I'm going on a road trip next week and will report my mileage findings when I get back.

shotmark Enthusiast

shotmark

Posted
Posted

So how is it a beast when all the Range does disable the AFM (DOD)................Really!

its just when you step on the pedal and you hear all 8, and your doing like 30 makes it feel so much better

mzodarg Senior Enthusiast

mzodarg

Posted
Posted

its just when you step on the pedal and you hear all 8, and your doing like 30 makes it feel so much better

So what your saying is when stepped on the peddle before it would stay in V4? Hmmm.....

fondupot Senior Enthusiast

fondupot

Posted
Posted

So how is it a beast when all the Range does disable the AFM (DOD)................Really!

 

Yea it reduced the lag going from V4 to V8. You're already in V8 so it just goes.

pm26 Senior Enthusiast

pm26

Posted
Posted

Hey Fondu, let us know how it impacts the MPG when you have a chance. I was looking at the same module and noticed theres one for better MPG but it just makes no sense turning our trucks into 4 bangers

Sorry to say this, but the way things are going with the government unrealistic mileage requirements,

it looks like someone will be driving 4 cylinder turbo engine trucks in very near future. With even higher sticker prices.

tpgdiver Enthusiast

tpgdiver

Posted
Posted

I can barely noticed the switch between V4 and V8. I had the truck over 90 mph (near Austin where speed limit is 85) over the weekend, and was surprised it switched to V4 mode at that speed. My 2008, rarely if ever went to V4 once you hit over about 70 mph. I drove over 400 miles during this trip and averaged 21.9 miles per gallon.

 

I do have a question about the active fuel management system. When it switches to use 4 cylinders, it is always the same 4 cylinders that shut off?

DanielAcosta Enthusiast

DanielAcosta

Posted
Posted

Regarding V4-V8 mode, under light throttle I can accelerate from about 15 all the way to 55mph on 4 cylinders, but don't recommend this in heavy traffic. Haven't used any oil yet in the first 16K miles.

Archived

This topic is now archived and is closed to further replies.

Go to topic listing

  • Recently Browsing   0 members

    • No registered users viewing this page.

  • Forum Statistics

    250.5k
    Total Topics
    2.7m
    Total Posts

  • Member Statistics

    342,920
    Total Members
    8,960
    Most Online
    Frank V
    Newest Member
    Frank V
    Joined

  • Who's Online   5 Members, 0 Anonymous, 1,209 Guests (See full list)

  • Latest Articles

  • Posts

    • bwiese
      seat base height *lowering* (base 40/20/40 seat, 2026 1500 WT std cab)

      By bwiese · Posted

      Folks, Have a great new 2026 WT  (std cab, 2.7/4WD) w/base 40/20/40 mech adj bench "fake buckets"  (with lower and upper center console) heavy vinyl seats.  Overall the seats are very comfortable and the vinyl is heavy and appears less likely to 'split out'. Am very tall (6'5")  + a bad back/osteporosis/former hyperparathyroidism so ease/range of movement is a bit restricted.  The truck rides a bit high and I use a nerf step bar w/my left foot to step in, then I put right foot/leg in, drag my butt in  & get seated.  Worked fine in my 2018 RAM quadCab. But I end up dragging my butt over the left raised sidecushsion area of vinyl seat, and due to texture there's fair amount of traction on slide inward.  (ArmorAll didn't improve.) If the seat were even ~1/2" - 3/4" lower it'd be helpful, but base seats just have the forward/backward underseat bail and the side lever for tilt which really doesn't affect seat height.   I really don't want to 'de-puff' the left side sidecushion forming the  fake 'bucket'. I know one company sells 'seat elevator blocks':  but is there a simple way of lowering the height of the driver seat instead?   Thanks Bill W San Jose  
    • bwiese
      on-wheel cellphone control: 2026 1500 WT (2.7L 4WD std cab)

      By bwiese · Posted

      I have a basic 2026 1500 WT  (2.7L/4WD reg cab shorttbed). Comfy, generally happy with electronics/radio - but is there a way I can add switches to steering wheel right-side position (curr. empty) so I can adjust volume, push phone button to voice dial, etc? Bill W San Jose  
    • Tyler Gibbs
      Travel Trailer 2024 2500 HD 6.6 Gas Engine ?

      By Tyler Gibbs · Posted

      The curb weight on a 1 ton crew cab long bed is around 7k lbs.  Now, I don't know where you went to school but 9k is not more than 2x 7k lbs. More than 2x 7k lbs would be 14k+.   With that said, obviously yes you're going to feel a 9k lb trailer when slowing down.  I already said, when accelerating.  When changing lanes?  No.  But if you look at the context of what was quoted, the original person said, "after a mile or two..." which means that would be after the accelerating portion and you're driving a generally steady pace.  Please do learn to read and comprehend.
    • sFrank
      2026 Silverado Range AFM DFM ECU loaction

      By sFrank · Posted

      So I purchased the Range unit for my 2026 and I am seeing different locations suggested for the ECM . Can anyone confirm wither under hood, left side or right side or behind the wheelwell?
    • No F-bdy Bs
      Dave's Auto (custom engine builder) tear down of L8T

      By No F-bdy Bs · Posted

      Like I've said before. Di and Carbon buildup is not that big of a concern. Engine had minimal buildup, and that engine was obviously not super well maintained. Do regular oil changes, and you're gtg as long as the rest of the truck lasts. Also, the High Pressure FP that people ****** about, but can't tell you why.  Now, I wish they'd trash the variable oil pump. No real world issues with them, but I'll gladly eat whatever miniscule MPG it's saving me in favor of more oil at all RPMs.    Curious to see his assessment of the 7.3 compared to the 6.6. I expect he'll praise the port inj, but from a structural standpoint, the 6.6 is as robust as any engine out there.    Not to take away from the 7.3. I feel it's equally as good as the 6.6.     As to heat on the rear cyls, I'd have to see numerous examples before I'd say it's an issue. Especially not knowing the history of that engine. For all is known, they could have blown a rad hose, and ran it hot, and the 2 rear cyls may be the first to get hot in a low coolant situation, but not be an issue aside from that. 

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...