DFM Delete anyone

[JD319]

Has anyone done a full DFM delete? (not just electronic) what cam did you use and what was the total cost with all the reprograming?

 

[clstark7]

Has anyone done a full DFM delete? (not just electronic) what cam did you use and what was the total cost with all the reprograming?

Mine is just electronically shut off. Curious what some people might know about this. I have read somewhere that a full mechanical delete will help the oil pump and oil pressure in the long run, not sure if there is any truth to that or not.

 

[Gangly]

There are DFM delete kits out there so I would assume that a few people have installed them. Unfortunately, the hardware isn't easily installed (removal of the heads) if you aren't handy with a wrench, so many people who would normally want to remove the DFM would not be able to install the necessary hardware themselves, or be willing to absorb the costs of having a shop install it.

You're basically looking at:
• 8 DFM blockoff plugs (install in valley)
• GM Head Bolt kit
• Four non-AFM lifter trays
• GM OEM L84 head gaskets
• Water Pump Gaskets
• Front Main seal
• GM Balancer Bolt
• Exhaust Gaskets
LS7 Lifters and a camshaft of your choice.

 

[JD319]

looks like Ill got to a local speed shop and get an estimate.

 

[JD319]

Mine is just electronically shut off. Curious what some people might know about this. I have read somewhere that a full mechanical delete will help the oil pump and oil pressure in the long run, not sure if there is any truth to that or not.

FYI, just shutting the DFM doesn't remove the issue of the faulty Lifters, not all engines will fail, but it's a good bet at some point there will be an internal engine issues due to the DFM system, All Manufactures are experiencing problems with this not just Chevy and GM. But it does seem like Chevy and GM are getting all the bad press about it.

 

[JD319]

 

[JD319]

L84 DOD/AFM/DFM Delete Kit for 2019+ Gen V 5.3 engines

SAVE MONEY WITH THE SDPC AFM DELETE KIT LTAFMD53 FROM SDPC

sdparts.com

 

[JD319]

GM Lifter Problems Could Lead to Class Action Lawsuit

Attorneys working with ClassAction.org are investigating whether a class action lawsuit can be filed in light of reports of lifter failure and collapse. Help this investigation and share your story here.

www.classaction.org

 

[Jmzvet]

I have a 2021 5.3. I also have a 2023 Yukon with a Duramax. Both have been awesome. I realize any and all things have the potential to be problematic. Including my 4 four kids

 

[BJones]

I think I got lucky. My 22 TB doesn’t have DFM or AFM. My last 09 had it and at 165K, I still had not experienced any issues with lifters.

 

[Gangly]

I think I got lucky. My 22 TB doesn’t have DFM or AFM. My last 09 had it and at 165K, I still had not experienced any issues with lifters.

Your 22 TB still has the DFM lifters, you just don't have the computer programming to engage/disengage them. Most people never have an issue with them, and despite the noise we all hear online, its a pretty rare occurrence when the components are manufactured properly.

2020 5.3 with almost 110K miles....still works.

 

[mattratcathat]

I think I got lucky. My 22 TB doesn’t have DFM or AFM. My last 09 had it and at 165K, I still had not experienced any issues with lifters.

How would I determine if I have it or not?

 

[Gangly]

How would I determine if I have it or not?

All T1's with gas engines have the DFM lifters, regardless of whether the software was disabled or not due to production limitations during covid.

If you have a gas engine in your T1, you have DFM lifters.

 

[The Raven]

The other option (the one i'm probably going with) is to buy the GMEPP powertrain plan for as many years as you can multiplied by your yearly mileage. It will be A LOT cheaper than removing the DFM hardware from your engine, and you can still enjoy the fuel mileage savings of DFM. When a lifter finally breaks, hand the truck over to the dealer and tell them "let me know when its ready".

 

[RedBoss21']

I know I'm a little late to this thread. I have a 21' TB with the 5.3. Going to hit 60k very soon. I know a few people that have had to get the lifter issue repaired but luckily theirs was under warranty. If there's a failure there is a chance of metal getting to the rest of the components which can lead to engine failure.

Since my warranty is about done, I was considering doing a cam swap and DOD delete. It's a painful job and the labor is high. Then to get it tuned for the new cam since it won't be stock. Looking at $10k to get it done. Even looking at stock components which who would want to do that if your this far into it right? Would still be around $7k.

Honestly thinking about buying a high performance long block from Texas Speed. Depending on choices is $10-15k and be done with it and have a bullet proof engine making considerably more power for almost the same price for preventable maintenance for just doing a cam swap. This is a deep rabbit hole.