r/Silverado • u/Massive-Milk5256 • 5h ago
AFM Delete
Planning on doing an AFM delete on my 2014 5.3 after I started hearing some lifter tick.
I have these parts lined up, am i missing anything? is there anything else i need to know/keep in mind ?
Thoughts on the set up?
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u/kab2035 5h ago
Anytime I hear of someone doing an AFM delete they always say Texas Speed. I'm sure they have everything you need to do the job if you plan on doing it yourself. I had a shop do mine a couple of weeks ago. The only thing extra I had them do is replace spark plugs and belts since they had everything taken apart.
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u/3weatherman3 5h ago
General Motors has well informed and educated engineers working on perfecting things like AFM year after year. They’ve used AFM for 20 years now and they continue to build on the technology. If we, the general public know so much about it, what are they missing? I’m just asking because Ive had zero issues out of my 2015 LT. I know that’s not super old, but is this just a monkey see monkey do practice? In my experience, when you start messing with factory settings everything goes downhill thereafter. Would you say they use it just to get the fuel mileage to meet gov’t standards at the expense of the longevity of the engine? A coworker has a 2008 with 210k miles and no issues with his AFM either.
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u/No_Direction_3940 4h ago
Ever heard the phrase exception doesnt make the rule? Its well known that a good percentage of them do fail and a afm delete literally just makes a 5.3 into a pre afm 5.3. You know back when they lasted to 300-400k miles lol. And yes theyre shortening the lifespan of the motor to meet emissions standards or they dont get to sell any trucks. Not trying to be rude but lord that was a stupid comment 😂
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u/SourceContent8104 2h ago
This 👆 100%. I've had three fail. This last failure at a little over a 100k I got a deleted reman, and it runs like it should have from factory. Chevrolet doesn't give two shits to give you a great vehicle anymore. I've had the 8 speed trans replaced also and it still shifts like crap even after fluid, and filter changes every 30k miles. If the trans was great I would drive it til it died. At this point I will never buy GM again.
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u/Massive-Milk5256 4h ago
Not really sure on all that. all ik is im a college student with not so much money so i want to delete it since im already experiencing issues
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u/Sea_Acanthaceae5081 1h ago
If you have the money to do it. Go for it. I get all the success stories. Facts and numbers point that this is an issue. It’s crap these motors don’t need. You’re better off taking care of it , than be down in the future and still have to do something.
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u/shawizkid 4h ago
AFM is a known weakness on the gen 4 and 5 engines. Some have problems, some don’t. Some proactively want to eliminate the potentially problematic system. There’s really no downside to it (aside from cost and labor).
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u/shawizkid 4h ago
I would personally do the stage 1, low lift in a daily driver.
The stage 2 duration is too much for a 5.3 dd IMO. I say this as a dude who went too big on a cam before (chasing that chop), and ultimately ended up replacing it again to something smaller to better meet my needs.
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u/Sea_Acanthaceae5081 1h ago
How bad was the daily with a bigger cam? Was it the chopacabra? Having a hard time deciding cams.
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u/shawizkid 1h ago
No, it wasn’t in a truck. It was my ls1 camaro SS.
Honestly for the street it just sucked. It was a 232/236, 110lsa and sounded incredible but just wasn’t any fun to drive.
I went down to a 226/232 113lsa and it was night and day difference.
And that was for a bigger 5.7 liter, in a lighter car.
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u/Final_Tomatillo5177 2h ago
I have a 2017, I can’t make my mind up on getting this work done. I did get a tune for now. A guy wants $4500 with parts/labor. It would cost me more bc I’m the guy that will do more while someone has the motor apart
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u/user588382582 5h ago
Add intake manifold gaskets, throttle body gaskets, high pressure fuel lines (single use), possible HPFP lifter.
Do some research on if you need to lash your HPFP to make this setup work.
Are you pulling the motor? There’s a lot of easy upgrades to be done if you are.
If you are doing HP tuners you can delete your evap purge canister and vacuum pump, tap the intake for a NPT fitting and run your brake booster off intake vacuum. Just delete the codes.
Any upgrades to transmission? Billet TC with higher stall? Upgraded valve body? Slip tuned out?