Just got finished tearing down and replacing collapsed DoD lifter on my 4th gen 5.3L (2008 Silverado). I’ve now got my computer tuned to shut off AFM/DoD and am wondering…. Would just cutting the oil tower gaskets inside the VLOM and the tune be enough to prevent the issue in the future, without a plug? Or is the plug absolutely necessary? Thanks
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Gen 4 is less needed than gen 5 but still recommended. But if you do run without plug I suggest testing VLOM for leaking solenoids first. If it doesn't leak feel free to run without plug but leave VLOM unplugged and it does require the tuning. Something like a range disabler device will NOT suffice.
If later on you find yourself needing or wanting a full mechanical delete, keep in mind I do offer them.