Jump to content
  • Sign up for FREE! Become a GM-Trucks.com Member Today!

    In 20 seconds you can become part of the worlds largest and oldest community discussing General Motors, Chevrolet and GMC branded pickups, crossovers, and SUVs. From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. 

Recommended Posts

Chevy passed out a 2019 Silverado information book to journalists during this week's media drive. I'm working on scanning the entire thing and sharing it here. 

 

There's a lot of information packed into this flip book. I thought the most interesting was the engine line up and an AFM vs DFM diagram. This is the best comparison blowout diagram I've seen so far. Here's the four pages related to the engines. 

 

1533991753160-2f2d66c2-19e6-42b7-b397-f8964a764507.jpg

1533991796372-fd7b9cc0-7342-482d-ac71-94918e595750_.jpg

1533991945087-4d42519b-000a-4b9f-8b88-3b46a60ef2a2.jpg

1533991899728-4e7493aa-2058-4c9c-b1f7-b8c9fa288d8d.jpg

 

 

Link to comment
Share on other sites

On 8/11/2018 at 1:04 PM, Loco Diablo said:

I don’t know if it’s a good thing or a bad thing versus AFM


Sent from my iPhone using Tapatalk

The DFM engine will have less vibration than an AFM engine but is twice as likely to have a lifter issue than an AFM engine. Apparently GM feels the AFM system in the 2014+ Gen V engines is reliable enough that they are willing to double the number of collapsible lifters.

  • Like 1
Link to comment
Share on other sites

I hope for their sake they got it right this time. Could be another bailout in the works if not ...

 

Seems like an awful lot more to potentially go wrong with this system.

 

I sure as hell won't be the guinea pig on this one! Tried that once. Never again!

Edited by Jsdirt
  • Like 1
Link to comment
Share on other sites

I can’t believe V-8 drivers or V6 drivers put up with it, especially for the little gains. I tested mine every way possible barely got a mile a gallon with it on. Got out of it as soon as possible. Never going to have one.


Sent from my iPhone using Tapatalk

  • Like 2
Link to comment
Share on other sites

I'm still running my Range. No loss of fuel mileage, other than what was happening long before I got the device.

  • Like 1
Link to comment
Share on other sites

I bought the Range a month ago. I feel it is smoother without the V4/V8 switching.

 

I ran it for a couple of weeks, then took it off for a few days before reinstalling it. I don't see any noticeable loss in MPG.

 

The only thing I have noticed is when coasting (slowing down), the instant MPG only goes to around 80MPG. Without the Range it would go to 99 consistently.

Link to comment
Share on other sites

On ‎8‎/‎11‎/‎2018 at 8:02 AM, Zane said:

Chevy passed out a 2019 Silverado information book to journalists during this week's media drive. I'm working on scanning the entire thing and sharing it here. 

 

There's a lot of information packed into this flip book. I thought the most interesting was the engine line up and an AFM vs DFM diagram. This is the best comparison blowout diagram I've seen so far. Here's the four pages related to the engines. 

 

1533991753160-2f2d66c2-19e6-42b7-b397-f8964a764507.jpg

1533991796372-fd7b9cc0-7342-482d-ac71-94918e595750_.jpg

1533991945087-4d42519b-000a-4b9f-8b88-3b46a60ef2a2.jpg

1533991899728-4e7493aa-2058-4c9c-b1f7-b8c9fa288d8d.jpg

 

 

Zane in the second paragraph titled "Dynamic Fuel Management" there is a line stating the amount in percent that DFM is on over AFM and due to the glare I can not read it. What does it say please? Thank you. 

Link to comment
Share on other sites

7 hours ago, j-ten-ner said:

It says:

 

"...DFM operated with fewer than eight active cylinders...a 9% improvement over the...model with AFM..."

 

Could also be running on 7 cylinders. Not only four.

 

so long

j-ten-ner

So watching a few videos on the new system, it seems like it "could" run on 1 cylinder, however its programed to only go as low as 2 at a time. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

 Share

  • Similar Content

    • By HuntedOne4
      Okay so I broke my foot a last month so my truck has been sitting during the winter. Just recently the check engine light has came on. 
       
      I used my code reader and is said the thermostat was running cold. 
       
      And the engine fan automatically comes on and stays on for a little even after I turn the truck off. 
       
      My question is there a simple fix to this? Or would this require a replacement?
    • By Sir_Griglesworth
      Hello everyone. I've recently purchased a 2020 Silverado 1500 from a dealership. I found out late in the sale that the truck was used as the dealerships "loaner" which didn't really bother me even though I know people beat up those vehicles. Anyway, I'm pretty in-tune to vehicle sounds and I had a couple of questions regarding noises I'm hearing from my vehicle. 
       
      The first is a clunking noise and a physical jolt when I shift from Drive to Reverse. I have my foot on the brake and am on a flat surface. I notice it a lot after I've been driving for a while and go to back into my garage. I took the truck back to the dealership and they chalked it up to bad U-joints. They slapped 2 fresh sets on, but I've still go the issue. Any ideas what it may be? I don't feel like anything is going to fail, but I also don't like the sound and don't think it should be that way. I have another service appointment next week and I'd like to help them out with ideas considering they don't really seem to care.
       
      The second is a ticking noise coming from the undercarriage. I' got under the truck today and believe it's coming from the rear portion of the engine, but I'm not for certain as I've never been beneath the truck while it's been on a rack. The noise cannot be heard when standing at the front with the hood up, but I can hear it very noticeably when standing at the driver's door. I do not hear it as the engine is heating up, but that could be because every other component under the hood is loud as h*ll while the truck is heating up. Once the engine is approaching operating temp, it's very noticeable. As you can hear from the short video, it's every .5 to 1 second or so and is always present during idling. Again, may not be a big issue, but I hate hearing things on my vehicles that I can't attribute to something else.
       
      Thanks for reading my ramblings. I can try to post longer videos if anyone needs. Thanks in advance!
      IMG_8898_Trim_Trim (2).mp4 IMG_8910_Trim (2).mp4
    • By NicNakPatiWak
      Hey Everybody. I’m about to have my 2014 Silverado AFM deleted with stage 3 cam upgrade, longtube headers, l86 intake, l86 TB, 3200 stall, custom tune. My question- is their other things I must do to go with these upgrades? Truck is 4x4 but will soon be lowered. Driveshaft? New Trans cooler? Bigger oil pump? Any help would be appreciated. Thanks in advance 
    • By José Daniel Gonzalez
      I have a 2017 Chevy Silverado and I have been having trouble with the entire radio and screen .. I recently replace a bad HMI module that I got from infotainment.com and it solved the issue. Now the screen is back to black and the display where the gauges are says “audio off” any idea why ?? Anyone have this issue I tried everything. Maybe I need a new ACM module now? HELP ! 
    • By customboss
      Opening this up to disabled and other Vets. We need a place to share. Isolation is death and not a good death. 
      How are my Brother and Sisters making it work? I’m struggling tonight. I’ve done a lot and overcome much. As I age the pain is overwhelming. 62 YO  90% disabled  VA combat vet of USNavy and USArmy.   Never asked for help and for 42 years have helped others.  My truck, the science of automotive technology helps me maintain my sanity. Any others here that feel the drain on the soul and body? My fingers and formally strac functions don’t function right anymore.  I love the constitutional basis of USA but wonder have many forgotten the rule of law? UCMJ? Caring about others before self?  
  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    241.4k
    Total Topics
    1.4m
    Total Posts
  • Member Statistics

    305,141
    Total Members
    8,960
    Most Online
    patrick spires
    Newest Member
    patrick spires
    Joined



×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.