Mine did at the exact same time. The LFA was upgraded with AFM and [], [] improvement over AFM, DFM has 17 different cylinder firing patterns and switches seamlessly between them to provide just []. Im confused from the write up about the plug in. Because your Saab is mechanically similar to the Trailblazer, wed suggest that you are correct and no changes need to be made to the relief valve. Bought an 07 GMC Yukon 5.3 with the AFM, 87k. If you swapped in a LS9 cam, you will find it makes good power at the very top, but its actually down from 5,000 rpm and lower where the truck spends the majority of its time. Ill Never Ever buy another gm. So for all of you that continue to complain about how bad these things are. I have a shop 39 yrs . Replaced the engine with remanufactured one and had the AFM turned off with a computer hooked to the ECU. Im a little confused on the problems too, Im reading that the 2007 pick-ups with 5.3 really had bad oil consumption and plug fouling problems, but is the 2005 5.3 that came in the trailblazers, envoys, and sabb 9-7s the exact same design as these pick-ups and prone to the same failures? Yesterday my motor (116,000 miles) felt like it went into limp mode when decelerating from 8 cyl to 4 cyl but it recovered.This is the second time that this has happened in 6 months so I think that I am on the slope. It has AMF. In 5th gear on deceleration and 99 for fuel mileage estimate on the dash it still didnt go into 4 cyl mode. 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??? 1981 Cadillac V 864. Its job is to direct the flow of pressurized engine oil to the active fuel management intake and exhaust valve . If the 4th cylinder lifter has failed, would driving it damage the engine? The valve itself is part number W0133-2574213. Chevrolet 5.3 Engine Issues and Recommendations Any problems to watch out for?Did you replace the VLOM? If I put my truck in manual 5, it doesnt try to go into V4 mode. Only thing I noticed with the oil consumption issue. a little burning oil is a minor thing, my main concern is avoiding a multi-thousand dollar repair needed to the motor. On the caddis it helped to relocate the computer inboard the passenger compartment to keep them cool helped . If I were to put a 2006 5.3L in a 2007 Avalanche and buy the unit to plug into my OBD2 port would it work? I am trying to find out of this is true. But after reading this thread, Im a little concerned about the long-term reliability. It will show up as a misfire code in a cylinders 1,4,6, or 7. The oil is baked on to every component. 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. Ditto , never buy a throw away vehicle again is my recommendation and my fix . Oil consumption problems can be caused by a number of factors, including low oil pressure, worn oil seals, or worn engine parts. AFM works by deactivating half of the engines cylinders under certain circumstances to reduce fuel usage. http://www.autoserviceprofessional.com/article/91652/ticking-gm-v8-lifters-and-dtc. Had nothing but trouble out of it. I sold them when they were new. the body is in great shape. If AFM has been deleted, its common just to use a Dorman drain plug (m14 x 1.5) to remove the pressure relief valve entirely. The original version sprayed oil on the cylinder walls and increased oil consumption. Hello Brian, I just purchased a 2018 Silverado with a 5.3 AFM engine, I have 200 km on it. Ive only put a straight pipe exhaust, intake, and a boost controller on it. Its a simple and effective way to turn off the AFM system and provides the added bonus of improving exhaust sound. Traded it with 180K miles and did not experience any problems. We did take it apart to check for metal possibly being trapped inside, it looked like brand new. Dave, I also have a 2008 LTZ avalanche with 106,000 I have the exact same symptoms at this point I just want to sell it will the disabler help remove the check engine light wont pass inspection with light on thanks for your help Chris. Stop-start cylinder deactivation, direct injection, variable valve timing, thermal management, and continuously variable oil pump; are just some of the Silverado features of . New plugs and wires. Call chevy.They should being paying most of that. Chris, when you did your delete, did you also change the cam at the same time? Every one of these engine will have a lifter fail, this is a travesty! .That was a year ago and now I have a collapsed lifter and the most inexpensive repair $2200.00 for a partial lifter replacement. Remembered that after I bought my Tahoe. Perhaps a flaw by design would be a more appropriate description . My tech just installed the engine, only to notice that he doesnt have anything to plug the AFM solenoid pack into. It also has an electrical connector on the back. Just like Ram and their trash MDS system or Ford and their throwaway Ecobust engines. [] 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. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. Learn how your comment data is processed. put tran fluid in oil for a day till lifter became active, had to change the fouled plug. I cant really tell from driving. I just took a long trip and it used 1.5 quarts of oil. If I put the Range module on, is that all I need to do, both now and long term? Hi. 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. The Range AFM/DFM Disabler allows your V6 or V8 GM vehicle to run in full cylinder mode at all times, preventing the Active and Dynamic Fuel Management systems from dropping cylinders. Thank you for your time. What was happening to the first is slowly (or quickly in your case) happening to the others. A custom tune by a knowledgeable tuner with access to a chassis dyno will pay a lot of other dividends other on top of turning off afm and VVT. 2 15 with 5.3 Sierras both with 100k and [] For more on that, read:How to Delete or Disable Active Fuel Management (AFM) on GM Engines. There is no light on my dash or anything that indicates the system is active or exists, so its very confusing, Im still not sure if my vehicle has it or not. I read something the other day which I found to be funny. If possible, will simply not using VVT provide a powerful,good running engine? Im considering just replacing the 5.3 ( should be LMG, 2007 YUKON ) with the L96 crate engine. I service plenty of these vehicles with AFM, and the ones I have to open up the engine for repair because of a failure doesnt surprise me anymore. I know a few guys with Tundras. Only running on drivers side cylinders. I have a 12 with 4.8 Silverado 75000 miles [], [] as the LS engine familys hybrid engine in trucks and SUVs. You may eventually see a check engine light from a misfire code and the ECM dialing everything back to protect your engine. Toyota will be my next truck unless GM owns up and makes wright with consumers. The motor I pulled was a 2007 LY5 with about 77k on it. I have seen more internal engine failures in the last 5 years or so than I have in the first 15 years in the business. It works . TheAFMcylinders are opposite of one another in the firing order. 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? I can tell you for the past 2 years I changed out my LC9 5.3L fully synthetic oil every 3,000, even though Mobile Oil claims 10,000 miles or more. Would never take it on a long trip. I had privilege to work on some of that garbage they never did work . WATCH THIS VIDEO https://youtu.be/1MJMf3nnQhQ. Not sure which direction to go from here. Better airflow reduces drag on the pistons and the associated pumping losses. have yet to find a read that shows an escalade with high oil consumption and i have read a lot on the hybrid. The pressure relief in the pan opens at around 45psi to prevent over pressurization of the vlom solenoids. Looking for another Toyota at this point to match my 1985 4 runner with 380.000 miles and no issues since new. Or is the shuddering indicative of failed/failing lifters that need to be replaced before moving forward? I already ordered the parts to replace myself and remove the code. Most will want to get rid of the AFM immediately. I have a 2011 GMC with over 162,000 miles on it and it runs great! As we were installing the sensors prior to installation in the vehicle, we noticed that there was no fitting on the oil pan for the oil level sensor. Will the plug in cause my truck to burn more oil or will it fix the oil consumption issue? Will the plug in deactivater fix the oil consumption or will it cause more consumption? Have misfire code and engine has what I would call a surge while driving. Engine oil pressure is fine. Please report back if you have any issues, but I think you are in good shape. 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. We have purchased a used low mileage 6.2L as that is all the extended warranty company would pay for. Cylinder deactivation works to save fuel, but it may not be for the reasons you think. You could also have tried that if the trans oil didnt work. 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. I loved this rtuck until this happened!! I just bought a 2018 Silverado. Told her that it would not last and that she needed to find a different way to get around. im going to plug in a dissabler when im done to keep it V8 mode all the time. There are so many more oil passages on engines these days. Here are a few of the issues that you'll want to keep on your radar if you drive a 2017 Chevy or GMC vehicle with a 5.3L engine in it. They layed over night in engine oil before instalation. Can they be faulty? After all we bailed them out of bankruptcy. I have read synthetic isnt good for AFM lifters. However, they are only functional on engines that usedAFM. [], [] way. 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.
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