Jump to content

Lifters & Cam Need Replacing

Melks
 Share

Recommended Posts

L86 All Terrain Senior Enthusiast

L86 All Terrain

Posted
Posted
On 2019-07-11 at 10:57 AM, the33z33 said:

That's actually not terrible for being lifted on 35s. I hang around 18.2 lowered on 30s with the factory 3.08 gears 6 speed.

 

My range disabler comes in today. Can't wait to finally use my 6th gear and stop driving around in M5 all the time lol.

Really? My 6.2L sits at 12.8L/100km on 33x12.5 10ply's and I thought that was pretty bad. My CCLB 6.0L does 20L/100. No range, but my 6.2L rarely goes into V4 unless in town. I figured lowering would improve mileage. 

 

I was hoping Trumpy in the US would slap the shit out of the EPA a little bit on these ridiculous economy demands, but he hasn't done that yet. Now GM's focus is autonomous electrics. Scary stuff. Until then we are going to get sketchy technologies like the diesel EGR and DEF, the unreliable and rough AFM and Start/Stop insanity, that save about $10 in gas per year but costs you $10,000 when it fails. 

 

OP let us know the invoice value when all the work gets done. 

Baytrucker Enthusiast

Baytrucker

Posted
Posted (edited)

My truck is at 19,500km. Its a 2017 sierra 1500, 5.3. As you can tell from the low mileage, I'm a city driver.

 

I put in a range AFM disabler about two weeks ago to hopefully avoid this issue. I guess I'll never really truly know if my lifters would have failed if I hadn't blocked AFM, but I figure the odds are in my favor.

 

In the city, I've seen less than a 0.5mpg decrease in gas mileage.

 

One thing I have noticed is that it drives WAY better with no AFM. The transmission no longer does that schizophrenic, confused, back and forth thing it used to do, especially in large parking lots or suburban lane ways. No more hesitation when accelerating before a lane change too. The truck feels more responsive, and therefore safer.

 

There isn't much difference in the highway. I never noticed AFM there much anyway.

 

I plan to tune out AFM completely when my power-train warranty is up.  If I ever experience a lifter failure, I'll consider a mechanical AFM delete. Everything I've read is that software AFM delete (either range or tune) is as good as it gets for preventing lifter failure ahead of time. Mechanical delete is only worth the expense if you plan to take the engine apart anyway (like if your lifters and cam have already failed).

Edited by Baytrucker
  • 2 weeks later...
Melks Enthusiast

Melks

Posted
  • Author
Posted

After 3 weeks of my truck sitting at the dealership waiting on parts they have now told me it was just a couple broken bolts on the exhaust manifold. After replacing the sounds have gone away. Seems to be a different story every time I speak to the service advisor. Picking the truck up tomorrow so I will see for myself in the coming weeks.

 

I like the idea of trying out the Range AFM disabler to prevent this type of issue from happening in the future. More responsive sounds good to me as I often experience the hesitation Baytrucker has mentioned.

 

 

 

 

Gagliano7 Enthusiast

Gagliano7

Posted
Posted
7 hours ago, Melks said:

After 3 weeks of my truck sitting at the dealership waiting on parts they have now told me it was just a couple broken bolts on the exhaust manifold. After replacing the sounds have gone away. Seems to be a different story every time I speak to the service advisor. Picking the truck up tomorrow so I will see for myself in the coming weeks.

 

I like the idea of trying out the Range AFM disabler to prevent this type of issue from happening in the future. More responsive sounds good to me as I often experience the hesitation Baytrucker has mentioned.

 

 

 

 

That sounds awful fishy to me. Make sure you keep an eye on it before your warranty is up.

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
On ‎7‎/‎10‎/‎2019 at 11:35 AM, Kylebr1 said:

I have 105,000 km now with AFM turned off and have had zero issues . 

160,000 kilometers on mine with the AFM active. Have has zero issues. 

7.25 liters / 100 km lifetime metered average. 

 

I expect it to puke any day now. 

?

 

?

Gagliano7 Enthusiast

Gagliano7

Posted
Posted
25 minutes ago, Grumpy Bear said:

160,000 kilometers on mine with the AFM active. Have has zero issues. 

7.25 liters / 100 km lifetime metered average. 

 

I expect it to puke any day now. 

?

 

?

On the V6 how many lifters are AFM? Just curious

Melks Enthusiast

Melks

Posted
  • Author
Posted

Just an update - after 3 weeks of my truck sitting at the dealership waiting on parts (cam shaft, lifters, intake manifold) they finally began working on my truck and noticed broken exhaust manifold bolts. They replaced 5 bolts in total and the sound has gone away. No new parts were needed or used and the motor was not taken apart. False diagnosis.?

  • 11 months later...
Eric7701 New Member

Eric7701

Posted
Posted

Just got news that my 2019 Z71 Trail Boss needs Cam Lifters and a spark plug was fouled. so I'm not sure how this is going to work out. I contacted Chevrolet 1-800 today to start a case this truck has 35,500 miles. Anyone else has this happen to? This is still a new truck I take care of it really well.

  • 8 months later...
JC021 New Member

JC021

Posted
Posted
On 7/16/2019 at 2:15 PM, Baytrucker said:

My truck is at 19,500km. Its a 2017 sierra 1500, 5.3. As you can tell from the low mileage, I'm a city driver.

 

I put in a range AFM disabler about two weeks ago to hopefully avoid this issue. I guess I'll never really truly know if my lifters would have failed if I hadn't blocked AFM, but I figure the odds are in my favor.

 

In the city, I've seen less than a 0.5mpg decrease in gas mileage.

 

One thing I have noticed is that it drives WAY better with no AFM. The transmission no longer does that schizophrenic, confused, back and forth thing it used to do, especially in large parking lots or suburban lane ways. No more hesitation when accelerating before a lane change too. The truck feels more responsive, and therefore safer.

 

There isn't much difference in the highway. I never noticed AFM there much anyway.

 

I plan to tune out AFM completely when my power-train warranty is up.  If I ever experience a lifter failure, I'll consider a mechanical AFM delete. Everything I've read is that software AFM delete (either range or tune) is as good as it gets for preventing lifter failure ahead of time. Mechanical delete is only worth the expense if you plan to take the engine apart anyway (like if your lifters and cam have already failed).

I have been using the Range AFM disabler for about 2 years now.  It did not prevent the lifters from failing.  My truck is being torn apart at the dealership right now. 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
On 7/29/2019 at 6:15 AM, Gagliano7 said:

On the V6 how many lifters are AFM? Just curious

Two cylinders. 

 

Sorry just saw this. 

Grumpy Bear Senior Enthusiast

Grumpy Bear

Posted
Posted
20 hours ago, JC021 said:

I have been using the Range AFM disabler for about 2 years now.  It did not prevent the lifters from failing.  My truck is being torn apart at the dealership right now. 

Were they AFM lifters or non-AFM lifters? Both types fail. Just fail differently 

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing

  • Latest Articles

  • Posts

    • Grumpy Bear
      Some Assembly is Required

      By Grumpy Bear · Posted

      Can it still be Assembled II?   Viscosity on the decline by various means. Heat on the rise making that worse. Engine RPM in the tank. Smaller motors with more boost trying to emulate an electric motor. Full torque, zero rpm. Then we will triple the OCI. Argh.    But wait....there is more. LSPI has pushed a shift from Ca to Mg and as that cost more PLUS the run to lower sulfur compounds the TBN is moving in the wrong direction for the increased OCI's demanded.    That not being enough to placate a demand for a parameter they can't measure the other sulfur bearing compounds are also under attack. That would be zinc and phosphorus sulfonate compounds. To some degree those are being replaced with boron esters and others, i.e. titanium ect. All of which have shorter service lives. And there there is the "Secrete Sauce" marketing for AW adds that 'Can't be detected by UOA's" but trust me because I (the blenders) never ever lie.    Spoiler alert; ALL additives are sacrificial! Smaller amounts of the old blended with less robust versions of the new do not equal longer service lives. So what are the blenders recommending? Wait for it.......   MOVING THE GOAL POSTS! OMG      Let's declare the long standing TAN/TBN crossover irrelevant and tell people that soot is a great 'graphite' based lubricant which can aid tribo films. Wait, what? Let's declare that the standards used for oxidation and nitration were to conservative and can be expanded. Let's tell them that because GDI fuel dilution, although being a VISCOSITY KILLER and an acid generator is actually okay because we have better base oils that limit viscosity failure limits. (Said knowing this is measured in fractions of a centipoise and in bases not commonly used in shelf oils)   Lying from the heart is not just the new normal but we have a public, a very young public, that is so ignorant of the facts and so sure of their "RESEARCH" into AI driven models base in regurgitated  instead of scientific research based unvarnished, peer reviewed FACTS that the incoming guard is loosing their grip on reality and the OEM's are tickled pink while the blends bend the knee.    You have an ever limited set of tools to work with. And sooner or later those will be taken from you as the API and the EPA strangle the last remaining fluids from the system. What you have left is your wits. If you care to use them.    At some point in the very near future it will not longer be possible to do "What is best for the machine", and be replaced with "The best you have access too". You WILL be rewarded with half the life and twice the cost. That isn't that hard to predict.         
    • Chuck FB
      Software Update

      By Chuck FB · Posted

      I trust you saw the other comment where he knew what he was talking about !. Yes, these darned newer vehicles with all their so smart they are stupid technology, goes and drains the battery down. As you might see my other comment, I installed a Noco 5 battery tender under the hood and at this point still have the cord routed so I have to lift the hood and then plug it in but am typically parked in a garage or a shed so its not risking the engine hood in the wind. That way I am assured or hopefully so of not finding I have a battery drawn down and can't even start the truck and that also damages the battery to draw it down too far. 
    • Chuck FB
      Software Update

      By Chuck FB · Posted

      I guess no surprise my guesses were wrong !, at least now I know if I ever happen to see it grayed out in my own truck as to what is going on.    I never happened to catch my truck with it grayed out, it seemed every time I would test to see if there was an update it never found anything and yet more than once I would check to see if there was an update and there was nothing, then a day later or even that same morning I would drive to town and after more than one engine shut down in town as I did my errands it would pop up that there is an update now ready to install and the only place I have a connection to the internet is at home by wifi so its not as if it grabbed the download while driving. I don't trust these new vehicles due to all the crap they can decide to do while sitting for some days not running and run the battery down so most of the time if I know the truck will sit for a few days I plug in the battery tender I have mounted under the hood and so the only time the truck must have downloaded software was when it was sitting in the garage where the signal is awful but I have that tender plugged in and somehow it managed to download it. I honestly detest all this crap, way to easy to leave a person stranded.    Since I don't trust any of it I don't do the install of the already downloaded software until I get home and sometimes have even sat in the truck to watch what its doing as its going through the process to its conclusion as its not like it is set up that it will tell you the next time you fire up the engine that the update that was initialed actually installed or installed properly. Yes I can go into the updates and see the list. After I go through the install where I feel its safe to do so in case it breaks down as a result, I will plug in the battery tender after the fact to recharge as I don't know how much power its taking just to do the install and that can take a while for it to install. 
    • nfisherman
      Software Update

      By nfisherman · Posted

      Thanks for the reply. All settings were correct and the engine was off, as it was supposed to be. It turned out to be something simple. I took a drive for about an hour. I must have had a low battery without knowing it. The voltage gauge on the display looked ok. At the end of my drive, I shut off the engine and the update prompt came up and it updated normally. It’s ironic because one of the features of the update is a reduction of battery drain. 
    • kickass audio
      Software Update

      By kickass audio · Posted

      when it's greyed out that is it's way of telling you that it's downloading the patch in the background. Eventually it will be fully downloaded and then it will prompt you at ignition shut down to run the update. I highly recommend doing the update once you get home and can run it a few times. I've had several issues with updates not going the first time around and I had to retry the update multiple times in my driveway before it was successful.   Some updates are huge and take awhile to download. You can help it by connecting to your home WiFi and keep the truck on service mode for the ignition and keep it alive for awhile on a battery charger too. There are specs it needs to be in for updating such as a full enough battery charge, no running ignition, etc.

  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...