Most miles with stock AFM system?

[TollKeeper]

On my 2006 Saab, they lasted to 161911 before the lifter on cylinder 1 died. I replaced only the lifters on that cylinder, and its still going with its now new owner.

 

[RB_Trucker]

Around 101k with my 2019 Suburban, BB tuned and AFM still working no
Issues… but might get it disabled through the tune soon.

 

[thingraylinetahoe]

149,000 on a 2015 suburban and still runs Ike brand new.

 

[vcode]

Just an FYI. In our experience and feedback from customers, most issues the AFM system causes occur with the 2007-2013 models. They still occur with the 2014+ models but not as frequently. Most of our customers with 2014+ models still decide to disable the AFM anyway just to be safe.

Do you guys keep track of how many AFM delete tunes you have sold for the triplets? 10K? Just curious as I'm guessing 95% or more of the millions out there have no idea what a AFM delete even is.

 

[vcode]

I read a lot about deactivating the stock AFM system because of the many reports of trouble. But I often wonder who has accumulated the most trouble-free miles while running the OEM system. I have 114,000 on my '16 Tahoe, and no trouble yet (fingers still crossed).

I've seen posts of 200K+ miles on a stock tune. My guess is that 95% of the triplet owners have no idea what AFM is, much less how to delete it. I am also guessing there are a million or more out there with at least 100K miles and no issues.....

 

[JuicedLS]

2007 Tahoe 5.3L bone stock 275,000 miles, no problems, added catch can at 220k, drive it like I stole it, regular maintenance with good oil and oem parts, loses about a quart between oil changes, I guess I got the unicorn

 

[bobby2175]

My 2010 Yukon XL Denali was at 182K until I got my blackbear tune a month ago. Mostly highway miles, no towing.

 

[88m53453]

2015. 267,464 miles. Nothing altered. First 220k were gentle miles , always warmed up and driven steady state at 55 mph ish. Moved to Florida and regularly see 80 plus on I 75. Oil changes about every 7k with quality oil. Pulled the valve cover earlier this year, was spotless

 

[CLSVT]

My 2009 5.3 Tahoe went 210k mile before the AFM lifters went. Happen on a road trip 4 hours away from home. I chose to drive it home in that condition. Motor was toast when I got home.
Bought a 2013 LTZ with 113k on it and immediately plugged a Range Disabler into it.

 

[BlackBearPerf]

Do you guys keep track of how many AFM delete tunes you have sold for the triplets? 10K? Just curious as I'm guessing 95% or more of the millions out there have no idea what a AFM delete even is.

We don't keep track of that exact stat but the number of tunes we have completed where we disabled the AFM is in the thousands.

 

[davidkp]

2011 z71 Tahoe failed at 197,000 miles. Did not know about the AFM.
Bought a 2019 with <50,000 and driving in L5 while deciding what's next. Did get the CPO warranty with purchase.
Recommendations?

 

[B-train]

2011 z71 Tahoe failed at 197,000 miles. Did not know about the AFM.
Bought a 2019 with <50,000 and driving in L5 while deciding what's next. Did get the CPO warranty with purchase.
Recommendations?

A custom tune or a RANGE Device is my vote. I like the whole AFM delete, but the cost can be prohibitive depending on condition of vehicle and how long you plan to own it.

 

[MrMonte]

My Son's 2015, my friends 2014 & my 2018 Yukon Denalis all had AFM lifter failures this year. All with 5K or sooner oil changes & we all have lead in our right foot. Thinking those AFM lifters don't like rpms.

I tuned out my AFM at 58K & failed at 88K. My avg mpg last 30K miles before failure was 20.3 vs 20.1mpg with AFM activated

Post AFM delete cam/lifter swap I reset trip B 1,300 miles ago and I'm at 21.3mpg on winter fuel, many frozen windshield remote starts & running idle while shopping.

 

[B-train]

My Son's 2015, my friends 2014 & my 2018 Yukon Denalis all had AFM lifter failures this year. All with 5K or sooner oil changes & we all have lead in our right foot. Thinking those AFM lifters don't like rpms.

I tuned out my AFM at 58K & failed at 88K. My avg mpg last 30K miles before failure was 20.3 vs 20.1mpg with AFM activated

Post AFM delete cam/lifter swap I reset trip B 1,300 miles ago and I'm at 21.3mpg on winter fuel, many frozen windshield remote starts & running idle while shopping.

I would agree that the swap is the way to go. I've used a range Device for 100k and it has been fine. However, it alters certain parameters to achieve this and I'd be interested to know what those are and what it does to mpg. You obviously gained with the delete which is cool.

 

[CaptainMurray]

I had a 2007 Tahoe 261K all stock no issues, mostly driven on interstate. Now I have a 2020 51k Yukon all stock no issues.

 

[norcalboon]

2012 Yukon XL Denali 155K all stock, 5K OCI and maintained

 

[Marky Dissod]

2011 z71 Tahoe failed at 197,000 miles. Did not know about the AFM.
Bought a 2019 with <50,000 and driving in L5 while deciding what's next.
Did get the CPO warranty with purchase.
Recommendations?

Disable the cylinder deactivation feature, either by using a plugin, or having your ecm tuned.
(ECM tune is a far better value, especially if it includes a tcm tune, because many other things get improved as well - but simply disabling cylinder deactivation is cheaper than a full tune.)

Merely disabling / deactivating the feature not only prevents the two-mode lifters from exacerbating their inherent weakness, but also lengthens the life of the torque converter clutch as well.

Physically deleting the feature from the engine is far more costly, and may not be worth it to you unless you really want to keep it for your forseeable future.

 

[Andy Arnold]

Somebody understood the assignment. 257k is impressive. What’s your driving style like?

Light and easy. No towing. Lots of highway miles. I like to coast into known stops as long as I’m not impeding others. So I’m probably in 4 cyl mode more than the average driver. Not sure if that would have a positive or negative impact on the longevity of the lifters.

 

[MrMonte]

Light and easy. No towing. Lots of highway miles. I like to coast into known stops as long as I’m not impeding others. So I’m probably in 4 cyl mode more than the average driver. Not sure if that would have a positive or negative impact on the longevity of the lifters.

Your driving style is what I feel is what helps these AFM lifters survive. I am a minimalist braker, go faster down hill & slower up thus pure hwy I see around 27mpg on my 52 round-trip commute to work in my cammed AFM deleted 2018 Yukon Denali.

My AFM lifter failure was during a under 5sec 0-60mph sprint.

 

[IEATZ28]

2011 Suburban 156k unmodified. The engine bay is noisy, but we haven’t had any major issues. We run conventional oil changed every 5k. The oil pressure is a little on the low side for my taste, but oh well. My 06 Tahoe runs a lot quieter and with better oil pressure. I would probably trust it more than the Suburban, even though the miles are about the same, just because one has DOD and one doesn’t. You will find a ton of opinions on here. I think it’s all going to be on what your risk tolerance is. If I had to guess there are thousands of people driving these rigs 200k+without even knowing what AFM/DOD is. I only say that because of how many 07-14’s I still see on the road everyday. Good luck!