My 2013 LC9 just had #6 lifter fail, got a misfire code but the ticking gave it away. stalled in a certain way a warning wouldn be a bad idea. It is currently at the dealer having a new long block installed under warranty. Or not because it is the cast iron block and not he aluminum block? I couldnt agree with you less, yet I respect your opinions. Sylinder one lost compression on my 09 5,3. The engine will operate on 8cylinders, or V8mode, during engine starting, engine idling, and medium to heavy throttle applications. Drives way better for my mostly paved road driving. I have a 07 Yukon with 180K and no issues what so ever. My 5.3 has a vin code of O. Regarding the cylinder deactivation impact on fuel consumption . The LH6 in 2005-06 was a little different than the one used in 2007-09, but both had AFM. Replaced the engine with remanufactured one and had the AFM turned off with a computer hooked to the ECU. Active Fuel Management (AFM) is a trademarked General Motors technology that improves gas mileage by shutting down half of the cylinders under light-load conditions to reduce fuel consumption. Is this the shield you referred to in a past post? Pushing forward. I just got new warranty engine and dont want this issue again? The valve itself is part number W0133-2574213. Apparently all passkey III keys are not the same,, I bought one that said for 2006 impala assuming all pk3 would be the same, and I could not get it programmed in my saab 9-7,, so how Im waiting on ones that specially said for saab 9-7. hoping they will work. A 17 with 5.3. We figured we already had the intake manifold off to install the engine, why run the risk of MIL only to have to removed the intake manifold again without being paid. NOTE: You can find engine specs and detailed engine upgrade advice for every LS and LS-based Vortec truck engine in one place: The Definitive Guide to LS Engine Specs and LS Engine Upgrades. Install an AFM Delete Kit also in the pan is another AFM oil filter near the external engine oil filter. The engine will normally operate on 8 cylinders in V8 mode during starting, idling, and medium or . The cost of just rings $4,000.00, [] Disable your Chevy AFM: https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-… [], [] like front timing cover, knock sensor location, cylinder head style (cathedral ports), AFM (Active Fuel Management), and other components are key clues to which engine family youre looking []. I had one fail and it chattered the cam to the point that I had to Install a new cam. These trucks cost too much to have a terrible product. I have been assuming this is just a slow to pump-up lifter or lifters. Told her that it would not last and that she needed to find a different way to get around. Hi Brian, When an engine is contstantly running on oil that is broken down, it not only wheres out components because of no protection. I have 1999 Silverado with out AFM that gets 21 mpg and a 2008 with it that gets 14.6. A problem with cylinder deactivation can be solved by tuning the intake and exhaust valves. It was good for about 10 miles and started with same loud knock noise. The most common issue GM vehicle owners with AFM report is increased fuel consumption. I am going to do the full repair of the engine now, but not an overhaul (too hard to get at the pan). Engine oil pressure is fine. As it turned out one of the cam bearings was failing and causing the cam to wobble (my guess) which messed up the AFM and probably some other stuff too. With 40000 Thanks for the advice Brian! Accept i only have 60K on my truck and it hasnt recovered. The system uses solenoids to deliver oil pressure to control. As the problem gets worse, youll hear a lifter tick and eventually you may see clearance between the pushrod and the rocker which will quickly destroy the cam. Didnt change exhaust nor tune so likely no change in power/torque. It also mentions a valve cover replacement with revised PCV valve design. Jasper makes aGM engine that deletes AFM & will warranty the engine to a 100,000 miles parts & labor . Engines with AFM use a high-volume oil pump. He stated if I continued to exceed 4500 RPM it would blow the lifters out. My 2002 I had over 298K on it with no engine related issues. Driving around with a bad AFM lifter is the fastest and easiest way to destroy an engine. If i am successful locating a non-dod vin would i just need to have the ecm reprogrammed? . I bought a 2010 GMC Sierra 5.3L Truck in 2013 with 24K miles. You were lucky that it worked. HP tuners is not for someone like me that doesnt know how to use it and from what I read neither the range nor diablo plug and play device will work since the buicks pcm files are different than all other GM vehicles that came with afm because it was tuned in house at gms performance division. module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders1, 7, 6, and 4, switching to a V4mode. If thats the case, Summit Racing has dedicated truck cams that will increase power through the rangebottom to topbut the meat of it is in the mid-range where your engine spends the most time. Not sure which direction to go from here. Thanks to a properly maintained 5.3 with AFM, I can routinely get over 20 MPG on the highway. [] 5.3L engines start in the $600-$1,000 range and go up to a little more than $2,000 for the 6.0L and 6.2L engines. A lot more info with the ongoing GM 5.3l AFM engine issues on Cargurus. so the trans fluid worked for you then? Keith, sometimes they will only replace one lifter rather than the whole setIf thats the case, another lifter can fail again pretty quickly. The market for nonhybrid gasoline-powered vehicles is expected to fall by 20 percent during that time, but with tech like smarter cylinder deactivationin these upcoming GM V-8 trucks, for . I have a shop 39 yrs . Ive heard the Brand name Range thrown around in other forums, This is how mine started outthen 6 months later on the highway the service stabilitrak light and flashing engine light came on. Does cylinder deactivation affect engine life? - Quora Should I buy one to disable the V4 mode? I went with the new motor for the warranty. Our patented technology is the only product that will disable Active or Dynamic Fuel Management without reprogramming the factory ECU. The original version sprayed oil on the cylinder walls and increased oil consumption. When cylinders are deactivated, the number of crankshaft rotation increases between firing pulses. And consider using a higher grade of engine oil like Mobil 1 or Amsoil, etc. That might show up if you cut the filter and looked for debris in the pleats. The engine will operate on 8 cylinders in V8 mode during starting, idling, and medium or heavy throttle conditions. New plugs and wires. We need availability of a replacement engine without the AFM. Will this AFM DISABLER damage anything???. I just took a long trip and it used 1.5 quarts of oil. Active Fuel Management About Gone From 2022 Silverado Lineup - GM Authority I also notice that it doesnt go into V4 when it is cold. Ive only put a straight pipe exhaust, intake, and a boost controller on it. In October of 2010, GM added a deflector (p/n NAL-12639759) to keep oil from being sprayed directly on the rear cylinders. Did not help. , Production date on the vehicle is 04/2006 oddly enough. . Any thoughts or suggestions would be appreciated. Weve written some articles on the various Vortec engine upgrade paths, such as this one on LQ4 and LQ9it discusses some of the better options for choosing a cam intended for use in a truck. We have purchased a used low mileage 6.2L as that is all the extended warranty company would pay for. 8000 grand for the repair mine was 1,700.00 to repair, I had a 2004 small block v8(4.8) 331,000 miles on the truck,it was the usual on the maintenance front axles,etc. hi brian when you replace the lifters do you have to change the guides also? Most will want to get rid of the AFM immediately and VVT isnt for []. To do this, you need to leave the AFM solenoid pack connected to ensure no codes are thrown. []. The Hit and Miss Nature of Cylinder Deactivation Systems how many miles do you have on your engine? GM Releases Valve Lifter Service Update For V8 Engines It is a bad deal for sure.ive fixed a few best thing u can do is delete it in buy kit.no sense in fixing a flawed problem with the same flawed parts. 50,000 miles. Fortunately, the old engine hadnt been shipped back to the remanufacturer. I have an 07 Yukon with 230k on the engine. I am wondering the same thing. I wont bother with blocking the relief valve. What can I expect with the AFM in place, or, with AFM disabled (not deleted)? Its a simple and effective way to turn off the AFM system and provides the added bonus of improving exhaust sound. [], [] LS Tech: How to Delete VVT or DisableAFM []. Whats the next step? Since the tranny oil worked, you should now change the oil, right? Im looking at the Range Disabler but want to make sure it is required/suggested/recommended/safe? I have successfully used a gadget that plugs into the ODBII. RANGE TECNOLOGY.COM. If you ignore it and keep driving, odds are you will destroy the cam as well. If I had been able to push the issue and get the time, I would have done the full fix at first without the hassle. will feel like a jerk asking the clerk at lowes to cut them again. Now Im here tring to figure out what to do. Thank you again for the response. Hi my name is noel I am a mobile mechanic and I have a client that was having trouble with the lifters on a 2011 gmc yukon Denali 6.2 I placed the lifters after finishing I still had a problem with cylinder 8,6,3 rocker arms were not moving so I replaced the cam OEM part but still having miss fire on cylinder 6 what should I do to get rid of this problem, [] computer cannot switch over to four-cylinder mode. I am confused about the plug in disabler. The materials used in the engine were [], I have a 2018 GMC with the Eassist and AFM chevrolet - How does cylinder deactivation work? - Motor Vehicle Cylinder deactivation works to save fuel, but it may not be for the reasons you think. They shift cam lobes by sliding the cam, never actually shutting down the value but riding a different lube! There is a filter screen under the oil pressure sender that may be clogged and not getting enough oil to supply the solenoids. It seems this tough engine has everything incorporated into it. How to Delete or Disable Active Fuel Management (AFM) Batten, followed by several years developing performance pistons at Wiseco Piston Co. Today, Brian develops performance parts for Summit Racing Equipment and is a regular OnAllCylinders contributor. changed oil , its all working now, but want to disable this sorry system. the extra oil isnt needed. They took the engine down today found so much damage inside they ordered a new engine from Detroit. Given that, would you recommend buying one of the OBD-II devices to disable AFM? I would appreciate it if you let me know how you make out. The tune is the best bang for the buck outside a cam swap anyway and what Id recommend. Please report back if you have any issues, but I think you are in good shape. GM Making New Trucks Without Cylinder Deactivation Due To Chip - Motor1 .or something similar . Troubles begin with Bean-counters decide on what can be used for production and engineers who arent Gear-Heads. So for all of you that continue to complain about how bad these things are. This video covers the steps youll need to take before upgrading to a larger [], I am installing a complete delete system, just wondering what it will do if dont plug the oil pressure relief valve? I have no clue what to do now. The detergent. GM Dynamic Fuel Management Cylinder Deactivation Technology - GM Authority There is a note in the TSB that states the bulletin doesnt apply to the LH6 used in the Rainier, Trailblazer, and Envoy due to a different design oil pan and AFM relief valve. Cylinders two, three, and eight are all similar in cylinder deactivation. CAM motion says no just have to disable the AFM and VVT with a stock tune as the camshaft is not an aggressive camshaft but a drop in. From what Ive read new and low mileage engines with no issues is ideal to do a afm delete, tune, or use of a disabler. The engine has flex-fuel capability. I hate it. Took it to the dealer and was told I had a collapsed lifter. I had purchased an extended warranty when I bought the truck new. This will spray oil on the bottom of the cylinder walls which can cause oil burning, especially in high-rpm engines. 91 GMC Sierra K1500 F44 6.2 NA Plow truck with 7.5ft Leo Plow 94 K3500 CC DRW 6.5TD DE exhaust . thx Brian, Knock on wood I drive a 2011 silverado 44 Ltd with the 5.3 AFM/DOD not tuned out or delete being used and have experienced no problems or any sign of problems for that matter juat rolled over 210,000 all original factory parts would you suggest I tune it out or juat let it ride I change my oil religiously and also use lucas products for all aspects of my motor. A lot of drivers reported losing 2-4 quarts of oil in between oil changes. They learned that the oil level sensor was necessary and that we were supposed to have been advised that we needed to reuse the original oil pan. I only had 81k on the motor. General Motors has issued a service update for 2021 model year full-size truck and SUV models that are being shipped to dealerships and may be affected by valve lifter problems. What if I was able to trick the computer into thinking it is in 5th gear when it is actually in 6th? Every one of these engine will have a lifter fail, this is a travesty! I got the AMF disabler anyway and so far so good. I got as high as 23mpg on the highway in my 89 K1500 with 350ci and a five speed manual. Now the problems back, I have 180k miles on it now. I didnt have lifters fail, I had the 4 cylinders 1,4,6,7 have such blow by that my choice was a valve and piston job or a new motor. There is a chance the cam lobe was stressed and started to deteriorate. Problems After AFM Delete And How to Solve Them? - Tools Bible I have a 2011 GMC with over 162,000 miles on it and it runs great! I have an 08 Suburban that is currently getting the lifters replaced a second time within a three month span. . Plugs spark fine engine has power at higher RPMs although it is still in Limp mode / stabilitrack message, even after driving it a few times above 60 MPH then clearing errors with handheld programmer. Installed them again, all facing upwards, will know tomorrow if that was the solution.If this is the cause i cant beleve why they arnt build so that it is impossible to install them the wrong way in the plastic holder.And altso that there was no warning or installation advice With the New lifters.If these are the only lifters in the Whole world that must be in 2015 SILVERADO 1500 44 crew cab with 5.3L engine: So two weeks ago with approx 70K miles, I had an odd noise when accelerating and then engine light flashing and riding rough. HELP, I have 2005 envoy that runs makes lifter noise then dies in about 30 seconds then I started it one day and it ran with little noise for 5 min started next day and it starts and dies again got heads off was told I could put ls 3 lifters in is that true or is there something else I could do thanks Duane.
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