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AFM Disable on Chevy V8 engines?
Posted on 8/31/24 at 2:30 pm
Posted on 8/31/24 at 2:30 pm
Considering getting one of the Range Technology AFM disablers for my 2018 Chevy Silverado. Not having any issues with mine (50K miles), but do know quite a few people that have. Just want to put this out there and see if anyone has any experience with the product. Thank you in advance.
6
Posted on 8/31/24 at 3:05 pm to Northwest Louisiana
Mine works as advertised. Put it on after a lifter failure at 130k. I would highly suggest it to avoid the catastrophe that happened to my 2015 Sierra. According to my brother-in-law the new denalis do not allow it to work with their coding. GMC being big motor and all.
Posted on 8/31/24 at 4:40 pm to Maillard
I disabled it on my 2010 but we did it via some tuning software a buddy has on his laptop. Truck ran great after that
Posted on 8/31/24 at 7:02 pm to Northwest Louisiana
More than enough videos on YouTube to help with this issue.
Posted on 8/31/24 at 8:17 pm to Northwest Louisiana
works great. there is zero reason not to do it. AFM by the sticker only supposed to increase 1mpg. however, if you test it yourself, you will see you get better gas mileage if you disable it bc a lot of gas leaks inside the engine bc of the lifter system.
I've been using one for probably 5 years or so. I changed all my lifters as a precaution but as long as you don't hear any tapping sound, there is no need to change the lifters.
I've been using one for probably 5 years or so. I changed all my lifters as a precaution but as long as you don't hear any tapping sound, there is no need to change the lifters.
Posted on 8/31/24 at 8:40 pm to Northwest Louisiana
Another vote for the Range AFM disabler. Only regret is not installing it sooner.
Posted on 9/1/24 at 8:11 am to Northwest Louisiana
have one on my yukon, works perfectly
Posted on 9/1/24 at 9:46 am to DVinBR
additional note: i bought the yukon new and put the disabler on it soon after i bought it and have driven over 50k miles so far with it on it
Posted on 9/1/24 at 10:26 am to Northwest Louisiana
Put a Range on my 2018 at 52k. Works as advertised. Nearing 60k now and nary a tick. If you have a 6L80 trans, consider a trans thermostat by-pass as well.
Posted on 9/1/24 at 10:46 am to poppa1254
I have a 2018 Silverado Z71 with around 50K. Please explain the trans thermostat by-pass?
This post was edited on 9/1/24 at 2:51 pm
Posted on 9/1/24 at 3:14 pm to Northwest Louisiana
It is a very simple valve that allows the transmission fluid to by-pass the thermostat in the transmission. GM puts the thermostat in the transmission to make the fluid run upwards of 200 degrees or more, which makes it thinner and result in a gain of 2 or 3 mpg on the truck. Thinner fluid will result in a failure of the torque converter and/or the entire transmission. With the by-pass valve on mine, the fluid rarely gets to 140 degrees on a hot summer day.
Posted on 9/1/24 at 4:03 pm to faraway
quote:
. AFM by the sticker only supposed to increase 1mpg.
Can confirm - cruising around 70mph I averaged 20mpg. I went the full mile and did a full AFM/DOD delete for my 2018 Yukon Denali. The motor runs smooth as silk now and has power galore with a new cam and tune. It is 10+ times more expensive than the Range Disabler but also more permanent. I have made my L86 motor more simple like the original LS1.
Full AFM/DOD Delete Review
quote:
Thinner fluid will result in a failure of the torque converter and/or the entire transmission. With the by-pass valve on mine, the fluid rarely gets to 140 degrees on a hot summer day.
Is this also true for the 10 speed? I also don't care about efficiency compared to reliability.
This post was edited on 9/1/24 at 4:04 pm
Posted on 9/1/24 at 4:25 pm to bapple
quote:I don't know anything about the 10 speed. Mine has the 6L80 which is very smooth with the cooler running fluid
Is this also true for the 10 speed? I also don't care about efficiency compared to reliability.
Posted on 9/1/24 at 4:30 pm to poppa1254
The thermostat can also malfunction and not allow fluid to circulate through the cooler which cooks the fluid, and the transmission…. Ask my BIL.
Bypass is the way to go for sure.
Bypass is the way to go for sure.
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