gm cylinder deactivation problems

has 92,000 miles and was just told I have cam and lifter failure. I would say maybe 5% of my customers keep up on their oil changes. Does anyone know how to disable the new Dynamic Fuel Management on the 2019 Silverados? The engine had 200K miles. Todays computers are faster so it does work. stalled in a certain way a warning wouldn be a bad idea. This may show as low oil pressure or code P0521 or P0523 and is a relatively inexpensive fix as well. Hi Mike, the metal shield you noticed is probably the windage tray. With the nipple, or without? I could just transfer over the AFM lifter cover, but it is really nasty on the bottom side & I do not want to risk damaging this replacement engine if it is loaded with debris from the lifter & camshaft failure. A problem with cylinder deactivation can be solved by tuning the intake and exhaust valves. Keeping the oil changes regular is important and its possible that a previous owner may not have been as diligent as you are. [] For more on that, read:How to Delete or Disable Active Fuel Management (AFM) on GM Engines. Is there any reaction to the disabler when pulling a boat or trailer? Replaced the engine with remanufactured one and had the AFM turned off with a computer hooked to the ECU. Have misfire code and engine has what I would call a surge while driving. I ran 0W-20 on more the 5000 miles between changes. Another General Motors 5.3L V8 Lawsuit Filed | GM Authority Put everything back together proper torque, gakets, valve seals, etc. I plan on getting a tuner to disable the AFM. I hate it. 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. i have a 2007 suburban 6.0 and the number 4 intake lifter took a dive.i have already started to disassemble the engine as i plan on replacing all the lifters and reassemble the engine as i never had any other problems with it. 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. He unstuck it and I took it for a drive and same thing happened. Change your oil. The oil-pressure controlled system that operates the special lifters is VERY prone to failure, if the oil is not changed on time, OR if the wrong oil is used. Took it in this morning and mechanic said cylinder 6 misfire, he said the lifter hasnt failed. 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 Thanks for the advice Brian! Cylinder misfires (most common sign) Rough idling, poor acceleration, loss of power Check engine light with engine misfire codes Air-to-fuel ratios are either running rich or lean The easiest way to tell that you have an injector problem is through the check engine light and engine codes for misfires. Hello! Would doing the disabler option once I get it back be the right one? Does the disabler prevent the engine damage in the first place? Give the folks in Summit Racings tech department a call (330-630-0240) and they can work on a solution for you. in your opinion will this work, i really dont see any reason it wouldnt. Happened to me twice 2009 Silverado, finally deleted DOD and installed a performance cam and lifters. I guess I might have to call a dealership or GM to get a definite answer on this one. thanks brian love the info Im thinking of buying a ford now, I am going to buy a new truck in about a month it would be a Chevy but Dodge has lifter problems so they are out and Chevy has DoD problem.If they come out with Silverado without the DoD then i would buy one.But they arent so i will become a Ford man from now on, Have fun with that Ecobust motor & stretched timing chain . I guess what Im really trying to ask is,, are there any cons/disadvantages to installing the AFM delete Electronic module? Oh,the throw away vehicle has 77,000 miles and has always had meticulous maintenance . Regardless of the AFM solenoid being commanded on or off. Does cylinder deactivation affect engine life? - Quora These trucks cost too much to have a terrible product. General motors sent out a service bulletins to their dealers however, all dealers will not tell you about the bulletin. If under the truck while parked and it is doing it it sounds like it is towards the back of motor. [] block engine used in GM hybrid trucks and SUVs between 2008 and 2009. I have a noise in the engine but it seems to go away when revved up. i just bought a 2018 Silverado with the 5.3 I have no clue what to do now. Yes, always change all the lifters at once. Im curious as to how much tran fluid you put in? Do you think it would be wise to put a AFM disabler on a brand new truck to avoid engine damage? Who knew? Right now I have just over 77K miles with no lifter problems Knock on wood I am thinking of the AFM disabler. NOTE:If you were in a situation where youve installed the AFM delete kit, but dont have access to a programmera disabler can still be a viable option. CHANGE YOUR OIL!!!!! AFM Sucks!!! I own a reputable repair shop. If you are using VVT, you could use the NAL-12612273 (L92) cam. Drives way better for my mostly paved road driving. Seems my oil pressure sensor is bad, are showing the same oil pressure at all times, even when it dosnt run.Dont know it that fault was there before i replaced the lifters. All I can say is they now try this again and they are still having trouble..when will they ever leave well enough alone. Glad I did. I have a 2012 Chevy Avalanche. They lasted one year with big problems. I wii be using this truck to haul a camper for full time RV living and am thinking of a tuner to shut off AFM and maximize performance and economy. Clean oil is crucial. They took the engine down today found so much damage inside they ordered a new engine from Detroit. General Motors Active Fuel Management Cylinder Deactivation Technology Active Fuel Management (AFM), otherwise known as Cylinder Deactivation is a General Motors engine technology that. Been driving with no issues but I did notice that the AFM disabler removed a P0449 code (Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction) dont know if this is a coincidence or they are related??? [] engines is that when VVT (variable valve timing) appeared and was later followed by AFM (which is Active Fuel Management, when the engine deletes four cylinders under light load) both of these packages drastically affect []. I just got new warranty engine and dont want this issue again? 2 15 with 5.3 Sierras both with 100k and So I researched and got an AFM disabler. September 2017, I got talked into trading for 2017 AFM this was a bad choice 5.3 engine. I have also heard that the oil pump is to be changed and I have also heard that it does not matter. If so what would the vin code be? However, the fuel savings are not always as much as expected. How long did it take? What if I was able to trick the computer into thinking it is in 5th gear when it is actually in 6th? 2011 Chevy Avalanche LTZ. GM offers the following diagnostic steps in determining if this is the problem. Disable the afm. I wont bother with blocking the relief valve. You may eventually see a check engine light from a misfire code and the ECM dialing everything back to protect your engine. AFM or active fuel management is a GM/Chevy technology meant to improve gas mileage. They shift cam lobes by sliding the cam, never actually shutting down the value but riding a different lube! I had to replace them all and the camshaft as well. We were getting a code that the cam position sensor was not functioning properly. Help appreciated. Cylinders two, three, and eight are all similar in cylinder deactivation. Did not help. I tried the trans fluid in the oil. Yes thats true. I bought a new 2017 Cadillac CTS back in January 3.6L V6 with 8-speed trans. Vehicle has been serviced more regular than the manual calls for and the AFM has caused problem after problem with fouled plugs. It seems to me that the high volume oil pump should not hopefully cause premature wear but if it is pushing more oil through the heads than I guess the valve stem seals have more work to do. yep, you are 100% Right, I called a local saab shop and they filled me in, in 2005 the trailblazer and clones have DOD (displacement on demand), My next issue is getting extra ignition keys on the cheap. I contacted service manager in Gastonia, NC and he was kind enough to tell me the whole history of the problem.. EPA required better fuel mileage and less emissions and GM, Ford and Honda(V-6) came up with this failed AFM system. Our patented technology is the only product that will disable Active or Dynamic Fuel Management without reprogramming the factory ECU. The 5 Most Common Chevy EcoTec3 5.3L Engine Problems My 2011 Tahoe has a LMG motor in it with a build date of May 2011. 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. There may be an ignition related issue on that cylinder. I loved this rtuck until this happened!! This is my second Avalanche and I never had any issues with either of them. Fuel pump failure is the most common problem and can occur due to a number of reasons, such as a clogged filter or a faulty pump. I have a 12 wit 4.8 Silverado 75000 miles of cranking pressure because the duration is longer on those cylinders to being with to offset the AFM lifter design. Have a lifter problem on my 2010 5.3 Silverado. Service manager said nothing else needs to be replaced because the engine has a Teflon coating. Having it fixed now, just curious Seems like a problematic design. It only has about 9k miles on it. From what I am reading this would eliminate the possibility of failure, prevent false check engine lights and continue to make the appropriate power??? The most common are fuel pump failure, transfer case sensor failure, fuel injector failure, and carbon build-up. 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. I used 1 quart of tranny fluid in the crankcase ran it for 20 minutes, no luck. Both #6 lifters only move when turning engine by hand, if you use the starter they stop moving. Question is, since my 2004 ECM and wiring harness were made before the AMF came about will this motor work properly as a V8 or will I need to replace the lifters, cam, oil sensor, etc as the delete method mentions? Is this the shield you referred to in a past post? AFMis good for gas mileage and can be 5-7 percent more fuel-efficient under certain conditions. I call it active obama fuel management .A scam . To do this, you need to leave the AFM solenoid pack connected to ensure no codes are thrown. A 17 with 5.3. I noticed this discussion mainly addresses Chevy Silverados and other trucks? Call chevy.They should being paying most of that. A 17 with 5.3. Cylinder deactivation is very effective in reducing fuel and reducing the emissions of harmful gases. another common cause for low OP is the oil pick up tube O ring. How to Fix GM's Cylinder Deactivation Problems I have a shop 39 yrs . 190k on the motor always ran AMSOIL full synth since new. An electromechanical system deactivates and reactivates all 16 of the engine's hydraulic valve lifters, controlling valve actuation. What Is Hemi MDS? - MotorTrend module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders1, 7, 6, and 4, switching to a V4mode. There are 5.3 cylinder deactivation problems that can occur. 330-630-0240. You will get codes thrown if the afm is physically removed without telling the ECM you did so. After reading these forums Im a little concerned about my decision to stay with GM. My 5.3 has a vin code of O. This is my project car and will be my drive (about 5000 miles a year). The oil is baked on to every component. Teflon coatings does not last. Regarding the cylinder deactivation impact on fuel consumption . Everything else looked good. Theyre also notorious for bad cam tower oil leaks. It also mentions a valve cover replacement with revised PCV valve design. I cant stand seeing customers continuously going thousands of miles over on the oil and wonder why theres problems. [], [] as the LS engine familys hybrid engine in trucks and SUVs. Also, it is the easiest way [], [] for the 2010 Chevy Camaro SSis also a Gen IV 6.2L aluminum-block V8, but with the addition of Active Fuel Management and Variable Valve Timing. When we removed the oil pan from the new block, we noticed a metal shield covering the bottom of the block. If the 4th cylinder lifter has failed, would driving it damage the engine? thank You so much! That inherently less smooth operation requires additional NVH dampening. 2012 5.3 Tahoe AFM, #4 lifter collapse,replaced all lifters,started engine ran ok, then rough, got #6 misfire code. Because its not just GM that have engine problems. I will keep reading and take notes. I have ordered an ATM disabler and will be putting a can of Textron in the gas at the next fill up. I have a Yukon 116k it now needs its 3rd set of lifters and cam. 1. A bad lifter can be a minor repair if you get it fixed immediately after you hear an issue. 91 GMC Sierra K1500 F44 6.2 NA Plow truck with 7.5ft Leo Plow 94 K3500 CC DRW 6.5TD DE exhaust . Dummy Me thought gm learned its lesson in 1981 but they never did and I Too am stuck with a Buick thats just waiting to self destruct. Then it takes out the lifter again and again until you bite the bullet and replace the cam. 2018 new truck has me really disgusted If I had checked this out better, there would have been one less POS Chevy sold last year ! Should I buy a Diablo AFM disabler to prevent the new block from dropping to 4 cylinder? The LZ1 was upgraded with AFM and []. In the mean-time I found that you can keep the engine from going into 4 cyl mode by using the manual shift (if so equipped) and keeping it out of 6th gear. Engines with AFM use a high-volume oil pump. I saw two Summit Racing kits, with different valley coverswhich one do I need for my Yukon? Shame this happened. a little burning oil is a minor thing, my main concern is avoiding a multi-thousand dollar repair needed to the motor. When they are locked into position, they wont wear further and cause issues down the road. NOTE: Some parts are not legal for use in California or other states with similar laws/regulations. Or is the shuddering indicative of failed/failing lifters that need to be replaced before moving forward? Please report back if you have any issues, but I think you are in good shape. Im looking at the Range Disabler but want to make sure it is required/suggested/recommended/safe? The GM 2.7-liter L3B Turbo four-cylinder engine for Chevy Silverado and GMC Sierra pickups is meant to change minds about power and torque in a small package. GM tried this on cadillacs about 20 years ago and if memory serves me correctly it was a disaster. Number 7 cylinder lifters stops moving when truck starts. Engines withAFMalso use a special camshaft, a high-volume oil pump, and a pressure relief valve in the oil pan. Took it to my dads and he tore things apart and found that I had a lifter that was stuck. This reduces expense when you build it [], [] intake, and a cable-driven throttle body, plus Im also installing Trick Flows VVT and AFM delete kits. I would appreciate it if you let me know how you make out. After a stint in the U.S. Air Force, Brian Nutter studied at the Houston, TX-based School of Automotive Machinists in 1997. When cruising on the freeway (for example) in 4 cylinder mode and jumping on the throttle to pass or get out in the fast lane, there is CONSIDERABLE and annoying and dangerous lag, like 3 seconds, and this is a problem. Carbon Build-Up in the Intake Ports. The biggest problem is nobody changes their oil on time. Any guidance would surely be appreciated. Thank you. Only wish Id did my homework, nothing but issues, from 14,000 miles it starts this motor noise,as if lifters at cold starts, let set up for 8 hrs same noise, this noise is on the right side of engine, it lasts 5 seconds but never heard this until we had this cold spell in the state low temperatures or it was just time for this to start? Install an AFM Delete Kit https://www.amazon.com/gp/product/B00BR1R8N8/ref=ox_sc_act_title_1?smid=A359W9MWR50ZG1&psc=1. Once the lifter has been damaged, the cam is probably also damaged. A lot more info with the ongoing GM 5.3l AFM engine issues on Cargurus. It has plenty of oil pressure and I put all new lifters in it. Loved the looks and interior and thought a I got a great deal at $6k even. Whats the next step? All the time. Keith, sometimes they will only replace one lifter rather than the whole setIf thats the case, another lifter can fail again pretty quickly. The Definitive Guide to LS Engine Specs and LS Engine Upgrades, LS3 Engine Upgrade Guide: Expert Advice for LS3 Mods to Maximize Performance - OnAllCylinders, LS Engine Bore & Stroke Chart - OnAllCylinders, http://www.autoserviceprofessional.com/article/91652/ticking-gm-v8-lifters-and-dtc, Range Active Fuel Management Disable Device, LS9 6.2L Engine Upgrade Guide: Expert Advice for LS9 Mods to Maximize Performance - OnAllCylinders, LMG 5.3L Engine Upgrade Guide: Expert Advice for LMG Mods to Maximize Performance - OnAllCylinders, L59 5.3L Engine Upgrade Guide: Expert Advice for L59 Mods to Maximize Performance - OnAllCylinders, L76 Car Engine Upgrade Guide: Expert Advice for L76 Car Engine Mods to Maximize Performance - OnAllCylinders, LH8 5.3L Engine Upgrade Guide: Expert Advice for L20 Engine Mods to Maximize Performance - OnAllCylinders, LH6 5.3L Engine Upgrade Guide: Expert Advice for LH6 Engine Mods to Maximize Performance - OnAllCylinders, LFA 6.0L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More - OnAllCylinders, LFA 6.0L Engine Upgrade Guide: Expert Advice for LFA Engine Mods to Maximize Performance - OnAllCylinders, LZ1 6.0L Engine Upgrade Guide: Expert Advice for LZ1 Engine Mods to Maximize Performance - OnAllCylinders, What the New LT2 Mid-Engine Corvette Reveals About the Future of GM LT Engines, All the Torques: How Summit Pro LS Truck Camshafts Help Truck Owners Maximize Performance, LMF 5.3L Engine Upgrade Guide: Expert Advice for LMF Mods to Maximize Performance - OnAllCylinders, L98 6.0L Engine Upgrade Guide: Expert Advice for L98 Mods to Maximize Performance, LQ4/LQ9 Engine Upgrade Guide: Expert Advice for LQ4 & LQ9 Mods to Maximize Performance - OnAllCylinders, Range AFM Disabler Reviews | Range Technology AFM Disabler 2019, LS3 Engine Upgrade Guide: Expert Advice for LS3 Mods to Maximize Performance, LM7 5.3L Engine Upgrade Guide: Expert Advice for LM7 Mods to Maximize Performance, LS4 Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, L76 6.0L Car Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, L96 6.0L Engine Upgrade Guide: Expert Advice for L96 Mods to Maximize Performance, LC9 5.3L Engine Upgrade Guide: Expert Advice for LC9 Mods to Maximize Performance, LH6 5.3L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, LZ1 6.0L Engine Specs: Performance, Bore & Stroke, Cylinder Heads, Cam Specs & More, Chevy 4.3L Vortec Common Engine Problems - Vortec 4300 V6, https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-…, The 5 Most Common Chevy EcoTec3 5.3L Engine Problems, Chevy 6.0L Vortec Engine Problems - Common Vortec 6000 Problems, The 4 Most Common Chevy EcoTec3 6.2L Engine Problems, Gen 3 vs. Gen 4 LS Engines: How to ID Them (Video), Ask Away with Jeff Smith: Upgrades to GM LS 6.0L 4x4, LM4 5.3L Engine Upgrade Guide: Expert Advice for LM4 Mods to Maximize Performance, L33 5.3L Engine Upgrade Guide: Expert Advice for L33 Mods to Maximize Performance, Mailbag: Choosing an Engine Management System for an LS-Swapped '82 Olds Cutlass.

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