Install the disabler when you get your Yukon back and it will remain in good working order. Any guidance would surely be appreciated. Chevrolet 5.3 Engine Issues and Recommendations I have only put about 600 miles on it and noticed that the oil was a bit low and am hoping that it was that way when I picked it up. It has has 9000 miles and no lifter or other issues or codes so far. 1. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. 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? Thanks for the detailed post! A new class-action lawsuit has been filed against General Motors over alleged issues with its Generation IV 5.3L Vortec V8 engines. Will the plug in cause my truck to burn more oil or will it fix the oil consumption issue? While the system sounded good, the microprocessors scrambled to activate, deactivate, and then reactivate cylinders as driving conditions quickly changed, causing the car to hesitate, buck, and stall. 1. We recommend taking the truck to a local chassis dyno tuner and talking with them about a reflash. We need availability of a replacement engine without the AFM. 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. I have been assuming this is just a slow to pump-up lifter or lifters. Didnt change exhaust nor tune so likely no change in power/torque. I am considering the same. I have also heard that the oil pump is to be changed and I have also heard that it does not matter. 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. Have misfire code and engine has what I would call a surge while driving. Anyway, after some pushing and pulling I took it to the Dealer who sold it to me. I ran 0W-20 on more the 5000 miles between changes. I don know what else would cause the surge, but Id research the misfire code and see which cylinder is problematic. I guess they also went to aluminum blocks in 2007, not sure if that has anything to do with this issues thanks for the advice! Its got a hundred forty-five thousand miles on it. Would you get enough power to drive at freeway speeds? I have a 2007 Yukon XL with the 5.3L and am planning to do this as my lifters have failed and it rattles loudly if it starts, and runs limp. [] For more on that, read:How to Delete or Disable Active Fuel Management (AFM) on GM Engines. How stupid do you have to be to whine like a welfare check cashing idiot when there are literally 3 or 4 different ways to totally disable AFM. If you scroll back, you will find that it is recommended to change lifters and camshaft and looks some more. The only solution is to replace the entire cylinder head. Delete the AFM, buy a tuner/chip, take it to a performance place and get an actual tune done that fixes it, replace the AFM lifters with non AFM type, change other engine components with thisetc..etc..etc??? And consider using a higher grade of engine oil like Mobil 1 or Amsoil, etc. I am a long time GM fan but after reading how they messed up the 5.3 ( I had a fantastic 2003 Z72 off road) Ill look else ware for my next vehicle. If possible, will simply not using VVT provide a powerful,good running engine? The problem I am facing is that I want to drive this vehicle for at lease another 77K and do not want to drive my vehicle with this AFM issue. Should I buy one to disable the V4 mode? I will be installing the AFM deactivator tonight when I get hoe. I just bought a 2018 Silverado. whith a disabler. You may want to update your post. When you eliminate the AFM system, the extra oil is no longer needed. Ive only put a straight pipe exhaust, intake, and a boost controller on it. As a side note, Range Technologies recommends removing the disabler between visits to the dealer as they will need to access the OBD-2 port. I didnt even think about AFM until I got to drivee it on the highway and encountered the 4 cyl syndrome. A lot more info with the ongoing GM 5.3l AFM engine issues on Cargurus. im going to plug in a dissabler when im done to keep it V8 mode all the time. Replacing engine due to issues caused by AFM. Replaced all lifters on passenger side as well as pushrods for even wear. All Gen IV engine blocks haveAFMtowers and oil passages cast in. Is the Pressure relief valve replaceable? I am trying to find out of this is true. More information can be found in the GM TSB bulletin number 10-06-01-008g. Not sure what else it can be. Unplugged AFM engine only runs on 4 cylinders #2,3,5 and 8. AFM Sucks!!! Unfortunately because of emission standards nowadays, manufacturers cant go back to those style of engines. I asume low oil pressure cant make some of the DOD lifters to malfunction? they are known to become plugged. Its Chrysler and Ford. I have 217,000+ on it and it never fails meever! When they are locked into position, they wont wear further and cause issues down the road. Many people find the four-cylinder sound annoying if their vehicle is equipped with a louder aftermarket exhaust. Took it to a shop and they advised that it could be due to the AFM system not functioning properly. As long as a lifter hasnt started to fail, you can get by with a less-expensive disabler as preventative maintenance. I am having that done today on my 08 Suburban and its only costing me $225. I will keep reading and take notes. stalled in a certain way a warning wouldn be a bad idea. Would it be fine to go ahead with the AFM Disabler? I recently bought a 2018 Silverado 5.3L with AFM. Got rid of the bobblehead Rancho offroad shocks immediately and replaced with Bilstein coil overs. Plus the 5.7 has its own problems with VVT reliability and the rest of the truck is flimsy junk. in your opinion will this work, i really dont see any reason it wouldnt. Service manager said nothing else needs to be replaced because the engine has a Teflon coating. It is also known as Displacement on Demand (DoD) or cylinder deactivation. There is a chance the cam lobe was stressed and started to deteriorate. Logic says that it should not as the ECM isnt programmed to use AFM, but will it see a lack of resistance from no solenoid pack plugged in? I always have done my oil changes on time, not sure about the people who owned it before me though. Diablo says yes but they do not provide tunes. Next day I drove my car to work and was fine but when I left work all lights came back on and terrible noise in the hood. The trucks are only supposed to use two four. If you just crack it without it starting it moves all the time . Jusy 3 weeks ago I quit driving it because of the lifter, but it worked fine when i started it back up. A lot of drivers reported losing 2-4 quarts of oil in between oil changes. Getting ready to diy for $450. I still get a P0336 code every once in a while but still good to drive around town. I have already dropped a lot of money on this truck (08 suburban). Active Fuel Management (formerly known as displacement on demand (DoD)) is a trademarked name for the automobile variable displacement technology from General Motors.It allows a V6 or V8 engine to "turn off" half of the cylinders under light-load conditions to improve fuel economy.Estimated performance on EPA tests shows a 5.5-7.5% improvement in fuel economy. Battery was unplugged for a week.. 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 ! The engine also had 799 or 243 casting heads which are closely related to the LS6. It is usually first noticed during highway driving. You can monitor the oil level on your dipstick for 3,000 miles to determine if the deflector or plug would be needed, but chances are you wont based on the TSB. As GM issued 13 updatesnone of which workeddealers disabled the system on their customers' cars, leaving them permanently in V-8 mode. The engine has flex-fuel capability. From what I am reading this would eliminate the possibility of failure, prevent false check engine lights and continue to make the appropriate power??? Have an intake and Borla exhaust. Thankfull for any ideeas! The lifter came apart and chewed up the lobe on the cam Im selling it I also told my friend at work when he asked me about my truck .I said Ill never by another GM ever. Is this an issue only with GM SUVs and trucks, or does it include cars too? That might show up if you cut the filter and looked for debris in the pleats. 50,000 miles. The materials used in the engine were [], I have a 2018 GMC with the Eassist and AFM Why have you not gotten a reply from Mr Nutter, Buying a Silverado 6.2L. Ever since that which was Feb/March 2020 i get a intermittent rattle does not do it all the time and I am not getting any codes i.e. September 2017, I got talked into trading for 2017 AFM this was a bad choice 5.3 engine. This really sucks. how many miles do you have on your engine? Just one. I am going to do the full repair of the engine now, but not an overhaul (too hard to get at the pan). No clue what to do. I also notice that it doesnt go into V4 when it is cold. Cylinder deactivation--branded Active Fuel Management by GM--shuts off some cylinders when extra power isn't needed, to improve fuel economy. 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. 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. General motors sent out a service bulletins to their dealers however, all dealers will not tell you about the bulletin. 190k on the motor always ran AMSOIL full synth since new. .IMHO . Install an AFM Delete Kit I can literally drive from Seattle to Redding CA on one tank. GM switched over to the 4100 v-8 in 1982. It has the orings in place, that seals the towers. But not sure very annoying. Driving around with a bad AFM lifter is the fastest and easiest way to destroy an engine. 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. . Id try the disabler and the screen cleaning first and do the AFM delete if that doesnt solve the problem. RANGE TECNOLOGY.COM. [], [] LS Tech: How to Delete VVT or DisableAFM []. Thanks. Although the last oil change I had they offered a more expensive oil that would let me go every 5,000 miles and when this happened I was almost at 4,000 so needless to say I will never do that again. Are you saying that I am in the clear by a year and issues fixed? This system was originally used in early 1980s Cadillacs. These engines made 270-400 hp from the factory will run smooth as silk for over 300,000 miles (unless you have AFM). So now at 168 thousand miles it still runs good but gets bad gass mileage. My 2012 Silverado 5.3L just did the same thing as your Tahoe Brian. Hello! Happened once 1yr ago, truck was not used for a week and worked fine when i started it back up. I dont know where to being to look for the problem. I ran 0W-20 no more the 5000 miles between changes. However I do have 7 year bumper to bumper warranty that covers this problem if I start to get lifter problems over the next 2 years.. On the other hand if get the AFM disabler installed I am pretty sure that I void the warranty from what I read on the policy.
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