With 40000 Now i have my mechanic trying to follow a YouTube video I saw with a guy and a rod and a hammer. What the biggest reported problem with Chevy Silverados? I know I felt the same way. Only running on drivers side cylinders. Jasper makes aGM engine that deletes AFM & will warranty the engine to a 100,000 miles parts & labor . I am hoping this does the trick. But if you dont like it. 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. Replaced the engine with remanufactured one and had the AFM turned off with a computer hooked to the ECU. When I first bought my newer truck with fuel management, the GM tech at the dealership told me; if I wanted the engine to live a long life keep the RPMs below 4500. My ignition lock cylinder is completely stuck in lock position with the steering wheel locked as well. I told her to never pull the gadget out. I had an 82 caddy 4100 with alumn block and cast iron heads ,, Exploded in Philidelpha, Garbage.. All I can say is they now try this again and they are still having trouble..when will they ever leave well enough alone. is it still working good since you have done that with the trans fluid? I had privilege to work on some of that garbage they never did work . Regardless of the AFM solenoid being commanded on or off. Just like Ram and their trash MDS system or Ford and their throwaway Ecobust engines. 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. If you want to delete it entirely, its a M14 x 1.5 pipe plug or you could use the Improved Racing plug p/n IRP-814-M14-Kit. Accept i only have 60K on my truck and it hasnt recovered. The engine will normally operate on 8 cylinders in V8 mode during starting, idling, and medium or . Hello Brian, I just purchased a 2018 Silverado with a 5.3 AFM engine, I have 200 km on it. Disable the afm. I am going to do the full repair of the engine now, but not an overhaul (too hard to get at the pan). Have there been improvements in more recent model years employing AFM [2014 or newer]? [] block engine used in GM hybrid trucks and SUVs between 2008 and 2009. If you left the original cam in, the AFM cylinders will be down about 25 lbs. has 92,000 miles and was just told I have cam and lifter failure. Replaced all lifters on passenger side as well as pushrods for even wear. Id wait until the warranty expires then disable. Seafoam with syn oil change only fixed for a week. I also notice that it doesnt go into V4 when it is cold. Correct me if Im wrong- If such an item was available couldnt you then just replace the lifters in the 4 AFM cylinders and then just run a disabler or have your ECM/PCM reprogrammed to have AFM disabled permanently. What if I was able to trick the computer into thinking it is in 5th gear when it is actually in 6th? I have an 07 Yukon with over 180K. Are there errors or something only the dealer can clear? On June 4th you stated The vehicles affected were 2007 to Feb. 2011 AFM equipped engines (Aluminum or Iron block-L94, LZ1, L99, LC9, LH6, L76, LFA, LMG, and LY5) I am looking at purchasing a 2012 Tahoe with the LMG per the build sheet. If possible, will simply not using VVT provide a powerful,good running engine? whith a disabler. An AFM Disabler is an electronic device that plugs into the OBD-II port, under the dashboard. I have a 07 Yukon with 180K and no issues what so ever. It is replaceable.. just remove oil pan and it will be on top at the filter. However, they are only functional on engines that usedAFM. I have an 2004 1500 Suburban 4WD that I am about to replace the motor in. But after reading this thread, Im a little concerned about the long-term reliability. Drives way better for my mostly paved road driving. The engine has flex-fuel capability. Engine starts but is throwing a misfire on cyls 4,7. Now it appears GM and their handlers want to push the electric market with throw away junk that is mechanically weak . Clean oil is crucial. "The idea behind cylinder deactivation is that when you're cruising down the freeway and there's low load, the engine can turn off half the cylinders and in theory burn half as much gas. please respond with your opinion. I cant stand seeing customers continuously going thousands of miles over on the oil and wonder why theres problems. Any thoughts or suggestions would be appreciated. In four-cylinder mode, they act like air springs and allow for smooth operation. Hi Brian please help, yesterday after ice fishing was climbing a hill back home and check engine light flashed. What makes you think it was a design flaw ? Constant engine and transmission problems. I asume low oil pressure cant make some of the DOD lifters to malfunction? Heres what you need to know: An AFM Delete Kit is recommended when an AFM lifter fails or when doing performance upgrades. Unfortunately, I found out about the lifters too late. Diablo says yes but they do not provide tunes. Did Obama make them do this? 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? What would you do if you were in my situation? Thats not all bad because it saves the cost of an AFM delete kit. 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. Battery was unplugged for a week.. Thanks for the advice Brian! 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. That might show up if you cut the filter and looked for debris in the pleats. Fouls those plugs. 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 []. [] For more on that, read:How to Delete or Disable Active Fuel Management (AFM) on GM Engines. I was looking at the 08 escalade hybrid with dod on its 6.0 so wondering if the delete would contribute to the high oil consumption and therefore would adding the deflector be a good idea. They took the engine down today found so much damage inside they ordered a new engine from Detroit. There are a few potential causes for Chevy cylinder deactivation problems, including oil consumption problems, harmful to the environment, sludge issues, and lower cylinder temperatures. I got as high as 23mpg on the highway in my 89 K1500 with 350ci and a five speed manual. I didnt even think about AFM until I got to drivee it on the highway and encountered the 4 cyl syndrome. 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. Is Your 5.3L V8 Engine Eating Up Too Much Oil? We - GM Parts Online Chevy Silverado V8 To V4 Problems - Tools Bible Im praying that my RangeTech buys me a few years. On the AFM lifters that dosnt work i have installed them With the oil hole Down! I ran 0W-20 no more the 5000 miles between changes. 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. Well, they move a couple of times after startup thats all.Asume its the same on syl 7 on the other side.Disconected the Connector to the solenoids, no difference. Is this an issue only with GM SUVs and trucks, or does it include cars too? They shift cam lobes by sliding the cam, never actually shutting down the value but riding a different lube! Do not pay that amount. Welcome to socialism folks . They should let us the better mileage. Brian, I have been reading your article about the AFM. 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. The Service Traction Control and Check Engine lights also came on again but went out after a few minutes. Brian, I repaired a 2012 GMC Yukon Denali as the AFM lifter on #4 I take failed. It works . Corvette that does employ AFM. Cylinder deactivation is very effective in reducing fuel and reducing the emissions of harmful gases. At least Dodge admitted they had junk transmissions in the early 2000s and picked up sales each. There is a filter screen under the oil pressure sender that may be clogged and not getting enough oil to supply the solenoids. 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? I drive the same 320 mile trip every two weeks and drive the same route and full tank. It came back on last Wednesday starting with a flash. I have a 08 6.0L out of a Silverado with an aftermarket oil pan that has no provision for a pressure relief valve. Do you think I can still disable AFM? The tune is the best bang for the buck outside a cam swap anyway and what Id recommend. I hate it. [] Here is a guide on how to turn off AFM: https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-… [], [] Guide to disabling AFM: https://www.onallcylinders.com/2017/11/30/how-to-delete-or-disable-active-fuel-management-afm-on-gm-… [], [] Here is an article on how to deactivate AFM. It looks as if Ill need to start saving for a complete AFM delete kit with a new cam. I was getting ~ 30 mpg, so I love that. If I had wanted a 4 banger I would have bought one. Its not possible to install them wrong? The service manager that I spoke with said, GM states if 2 qts of oil is used between oil changes the engine needs rebuild. 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. How to Delete or Disable Active Fuel Management (AFM) With the AFM tuned off, it shouldnt be trying to switch over to four cylinder mode. No clue what to do. All these comments on the 5.3 are blowing my mind!!!. Afaik the 6.0 escalade hybrid does have it so wondering if safe to delete. 2017 5.3 Liter Chevy Engine Problems: Be Aware of These 4 Issues! 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. The cherry on top is its not saddled with Variable Valve Timing (VVT) or Active Fuel Management (AFM) found on some Gen. 4 engines. Truck has an active P0300 code and runs very rough. 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? do you fill to capacity anyways???? Unplugged AFM engine only runs on 4 cylinders #2,3,5 and 8. I have an 07 Yukon with 230k on the engine. 5.3-liter Chevy Engine Problems: What Should You Look Out For? CHANGE YOUR OIL!!!!! Toyotas 5.7 is one of the biggest gas guzzlers among half-ton trucks. Why would GM ever produce such problems with such little to gain. 2 15 with 5.3 Sierras both with 100k and This is my second Avalanche and I never had any issues with either of them. Now I know why there wa such a push to get older ,less efficient vehicles off the roads. Dont want to make a move on a new truck or jump to a 2500 yet.