NexDrive™ AFM/DFM Disabler ad: Read this if you drive a Silverado

If you drive a Silverado and there's more than 20,000 miles on the odometer, this one's for you. I've been tearing apart Silverado's for the past 15 years. 6.2s, 5.3s, and even the 4.3s, you name it. Nearly every one of their engines failed the exact same way. And I need to say something about what I've been watching, because it's been on my mind too long. ⠀ After all those years, all those trucks, all those men standing in my waiting room while I explain what I found under their valve cover, I've come to see it as pretty simple. There are only two kinds of Silverado owners driving around out there right now. ⠀ The ones who already know about this. And the ones who are one bad Tuesday morning away from finding out. ⠀ A guy came into my shop about a month ago in a 2019 Silverado 1500 LTZ. Younger guy, early 30s. Ran his own small excavation business. Knew his truck front to back, had been on the forums for years, and had done the reading. ⠀ He only rolled in because he'd installed a little module himself the week before and wanted a mechanic he trusted to confirm the install looked right. Ten minutes in the bay, thumbs up from me, and he drove off happy. ⠀ Five days later, a very different scene walked through the same doorway. ⠀ Man in his mid-50s this time. 2016 Silverado 1500. Beautiful truck. Kept it garaged. Waxed it every other weekend. Paid it off two years ago. Wedding ring. ⠀ He was in because his engine had started knocking on the way to Home Depot that morning. And the moment I got the valve cover off in the bay, I already knew we were done. ⠀ Lifter down. Cylinder 3. Camshaft turned to shavings. ⠀ Same style of truck. Same motor. Same roads probably. Same dealership almost certainly. The single difference between those two men was one of them had information the other one didn't. ⠀ I've been at this trade since 2010 and there isn't a Silverado I haven't had my hands inside of. Every model year from 2007 through 2022. LT, LTZ, High Country, Trail Boss, Custom, LTD. Every trim. Every configuration. They all sit on the exact same defect. ⠀ So here's the piece one of those men understood and the other didn't. ⠀ The name of it is Active Fuel Management. AFM. GM started building it into every V6 and V8 they put in a Silverado back in 2007 to pull a bit of extra highway mileage. Maybe a mile or two per gallon. All to hit a federal fuel economy target. On the 2019 and up Silverados they rebranded it DFM, Dynamic Fuel Management, but the same failure lives inside it. ⠀ Here's how it operates. The engine kills off half its cylinders while you're loafing along at cruise. And the little lifters that make it happen carry a tiny locking pin inside them that clicks in and out constantly. Latch, release, latch, release. Hundreds of movements per drive. Thousands per week. ⠀ Sooner or later, one of those pins wears through. The lifter caves. And it grinds the camshaft down like a chisel through wax. ⠀ What nobody bothers to tell you is that soft vibration you feel between 40 and 55 mph? That's the system switching modes. Every single time you feel it. ⠀ Here's what gets me. The Silverados built before 2007, the ones without AFM, those things are indestructible. I still have customers driving old GMT800 trucks with 275,000 miles on them like they just rolled off the lot. Not a single problem. ⠀ GM took a genuinely bulletproof motor and bolted this system on top of it. And it's been ending trucks that would have run forever. ⠀ The guys who spend time on the Silverado forums figured this out years ago. So did the dealer techs. So did the independent shops. They dealt with it a long time back. They didn't sit around waiting for GM to send them a letter about it, because that letter was never coming. ⠀ It's the guys who assumed somebody would mention it that end up on my lift. ⠀ And I want to be crystal clear because it matters. Maintenance has zero to do with any of this. I've torn down Silverados with barely 25,000 miles on the odometer. Last spring I opened up a 2020 that had 18,000 miles on it. Practically new. Owner had it under a year. ⠀ Spotless oil. Best synthetic on the market, swapped every 4,000 miles like clockwork. Didn't matter. I've had guys hand me stacks of dealer service records, every interval documented. Didn't matter. ⠀ The oil changes were never the fix. The pin was. And no amount of babying that Silverado stops that pin from cycling every time you turn the key. ⠀ That's what really wears on me. Because these are excellent motors. Take AFM out of the picture and a 5.3 or a 6.2 will run 300,000 miles without hesitation. ⠀ So a few years ago I started telling every Silverado owner who rolls through my bay the exact same thing the informed guys already figured out. Grab yourself a NexDrive disabler. ⠀ It slides into the OBD2 port under your dash. Ten seconds and you're done. It tells the computer to leave every cylinder firing full time. ⠀ No more mode switching. No more beating those lifters back and forth every time you crank it up. ⠀ It doesn't reprogram anything. Doesn't touch the tune. And pull it out before a dealer visit and there's no evidence it was ever in there. ⠀ I've had Silverado owners come back at 45,000, 65,000, 85,000 miles after installing one. Zero lifter work. The trucks run cleaner. And those lifters aren't taking abuse every single trip. ⠀ I'm not going to sit here and pretend it's magic. A lifter that's already broken is already broken, and this module won't undo damage that's already happened. But it removes the one thing driving all that wear in the first place. That's the whole point. ⠀ You don't need a five thousand dollar delete. You don't need an expensive tune. You don't need to tear anything apart. You just need to shut off the cycling. ⠀ I'm not writing this on any company's behalf. I'm writing it because I'm sick of watching the guys who didn't know pay four and five figures for a lesson their dealer could've handed them in thirty seconds. ⠀ I'm sick of being the one who has to sit them down and explain what AFM is. ⠀ I'm sick of knowing the guys who did know handled the whole thing for less than what they'd spend on a nice dinner, and the only real difference between them and the guys sitting on my lift was that somebody put them onto it first. ⠀ If you drive a Chevy Silverado from 2007 forward with a V6 or V8, AFM is in your engine. Those lifters are inside it. And they're cycling every single time you drive. ⠀ So be the guy who was already in the know. Not the one I'm scraping shavings out of next month. ⠀ 🚨 EDIT: A bunch of guys asked, so here it is. The one I install and stand behind is NexDrive. Here's where to find it: 👇 https://mynexdrive.com/products/nexdrive%E2%84%A2-afm-disabler ⠀ 100% Guarantee. Handed out more than I can count, and not one has ever come back to me. Not one.