Another option is to plug it entirely if the AFM is already removed. You will get codes thrown if the afm is physically removed without telling the ECM you did so. You were lucky that it worked. But not sure very annoying. Ditto , never buy a throw away vehicle again is my recommendation and my fix . Yes thats true. I own a reputable repair shop. Nine plaintiffs filed the General . What type of disabler did you go with? Why this happens is a more . Chevy 5.3 Engine Problems Are They That Long-Lasting? - Motor Verso No problems with any to this point. According to some experts, switching to cylinder deactivation reduces the emissions high somewhere between 4 and 10%, which is a huge percentage of saving the air from pollution. We did take it apart to check for metal possibly being trapped inside, it looked like brand new. The 1st design (built prior to April 1, 2006) was had afm components but wasnt connected. Brian, I have been reading your article about the AFM. Its Chrysler and Ford. Engines with AFM use a high-volume oil pump. If you installed a performance cam intended for a car, it may be bleeding off some low end compression. [] For more on that, read: How to Delete or Disable Active Fuel Management (AFM) on GM Engines. im going to plug in a dissabler when im done to keep it V8 mode all the time. I just got new warranty engine and dont want this issue again? (Non-AFM engines have a smooth cover.). As a side note, the early ones had a 24x reluctor and plastic chain guide (good) vs. the later ones with 58x and the spring loaded tensioner (not so good). Never did strand me on the side of the road way. Corvette that does employ AFM. .That was a year ago and now I have a collapsed lifter and the most inexpensive repair $2200.00 for a partial lifter replacement. You cannot compare them to old 350s. Mine did at the exact same time. stalled in a certain way a warning wouldn be a bad idea. GM claims fuel improvements ranging from 5%-15% depending on the engine. I have successfully used a gadget that plugs into the ODBII. Dont want to make a move on a new truck or jump to a 2500 yet. GM Lifter Recall Needed, Says Class Action Lawsuit Once the lifter has been damaged, the cam is probably also damaged. I had #4 lifter stick and now i am looking at replacing the engine with a non-dod version. The biggest problem is nobody changes their oil on time. Any advice that you could offer would be great. I only have ~ 5k miles on it, and it hasnt been driven hard, so Im assuming the lifters are fine. This may show as low oil pressure or code P0521 or P0523 and is a relatively inexpensive fix as well. I still get a P0336 code every once in a while but still good to drive around town. They took the engine down today found so much damage inside they ordered a new engine from Detroit. The secondary pressure relief in the back of the pan began to open at 55 psi and was completely open by 75 psi. I love the car so far. I will keep reading and take notes. What can I expect with the AFM in place, or, with AFM disabled (not deleted)? They layed over night in engine oil before instalation. It will show up as a misfire code in a cylinders 1,4,6, or 7. I just did the delete and replaced the cam as well. I bought a 2010 GMC Sierra 5.3L Truck in 2013 with 24K miles. Its not GMs choice to use AFM. It replaces the AFM components with standard parts. When you don't need the full power of the engine, it provides better fuel economy." How to Delete or Disable Active Fuel Management (AFM) on GM Engines There are so many moving components in an engine these days as opposed to the past. There may be an ignition related issue on that cylinder. At this state, a disabler would probably do what you need it to do. .or something similar . The VLOM consists of 4 electronically operated solenoids and is bolted to the top of the engine block beneath the intake manifold assembly. Ayush Srivastava 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 . have yet to find a read that shows an escalade with high oil consumption and i have read a lot on the hybrid. A new class-action lawsuit has been filed against General Motors over alleged issues with its Generation IV 5.3L Vortec V8 engines. Ive got about 6 to 8 psi of oil pressure after the engine gets warm and I have to stop at a traffic light. I wouldnt trade my 2000 Silverado, 5.3 liter that has constantly gotten 20 mpg since I bought it 15 years ago, for a dozen of these new $50,000 POS. I already ordered the parts to replace myself and remove the code. Many people find the four-cylinder sound annoying if their vehicle is equipped with a louder aftermarket exhaust. 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. Had nothing but trouble out of it. The main misconception is that shutting down half the engine's cylinders reduces fuel consumption because the . 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. Is Your 5.3L V8 Engine Eating Up Too Much Oil? We - GM Parts Online I had the same issue and had to have the AFM information deleted from the computer and the car tuned. I have a noise in the engine but it seems to go away when revved up. I have the towing package on my 13 Tahoe LTZ. Pulled right valve cover an rockers on syl 6 dont move. 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. AFMis good for gas mileage and can be 5-7 percent more fuel-efficient under certain conditions. 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. Didnt change exhaust nor tune so likely no change in power/torque. GM offers the following diagnostic steps in determining if this is the problem. I phoned the dealer and gave the VIN number, told it isnt equipped with AFM. Now I know why there wa such a push to get older ,less efficient vehicles off the roads. Cylinder Deactivation: What Is It and How Does It Help Save Fuel? AFM Sucks!!! How long did it take? Im curious as to how much tran fluid you put in? All ready done valve job . 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. My 2002 I had over 298K on it with no engine related issues. Any truth to that? I have a 2011 Chevy Tahoe with the 5.3 Gen 4 LS (VIN Code 0) and I bought a CAM motion DOD/AFM delete kit, 3 bolt drop in CAM Motion stage 2 camshaft, VVT delete kit and finally a Diablo Predator 2 Premium for GM programmer. Was a disaster then but a profitable disaster. The 2nd went with a conventional valvetrain. My daughters car had about 230,000 miles when she complained of the problem. 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 told her to never pull the gadget out. Will the plug in cause my truck to burn more oil or will it fix the oil consumption issue? Our 2013 yukon with 47k miles just failed. Why does GM's cylinder deactivation cause lifter failure? [] block engine used in GM hybrid trucks and SUVs between 2008 and 2009. She drove it for another 35,000 and it went out again.
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