Where can I buy a bolt to replace this relief valve ?? My 2002 I had over 298K on it with no engine related issues. The oil pump is high volume, but there are a lot of people that dont change it and rely on the pressure valve to keep the volume manageable. The tune is the best bang for the buck outside a cam swap anyway and what Id recommend. Was thinking maybe I could trick the ruck into thinking the engine was not warmed up, however, this might cause some problems for other processes, such as mix ratio and timing. Also replaced push rods rocker arms and rocker plate guide because if wore push rod and crack in rocker arm. the extra oil isnt needed. Any help would be appreciated. So I researched and got an AFM disabler. [], [] rugged iron block 6.0L came with VVT, but without Active Fuel Management, which saves you the cost of an AFM delete [], [] The LH6 engine is a 5.3L Gen. IV aluminum engine that replaced the LM4 in 2005. Solenoids, new lifters also test voltage to solenoid pack all good their, The cylinders are deactivated by means of a double-stroke lifter which is FAR more prone to failure than a standard lifter. Looking to tear down myself. At this state, a disabler would probably do what you need it to do. Send response to tkrieg@cox.net. []. . I had a 2007 Yukon XL 5.3 with the AFM. How about if they just let us have a manual transmission agains for fuel mileage? 1981 Cadillac V 864. He stated if I continued to exceed 4500 RPM it would blow the lifters out. Thank you for your time. Install an AFM Delete Kit any help? Lost number four It came back on last Wednesday starting with a flash. is it still working good since you have done that with the trans fluid? Install ls3 valley cover. It depends on the failure mode of the lifter however, certainly worth a try. So for all of you that continue to complain about how bad these things are. I would say maybe 5% of my customers keep up on their oil changes. The main misconception is that shutting down half the engine's cylinders reduces fuel consumption because the . Next day, fired it up to take the the junk yard and it ran great. [], [] Its a Gen. 4 5.3L iron-block engine, so youre getting the better intake manifold, connecting rods, and ECM. Hello! NOT GOOD!! Now I get 24 to 26 with deactivation locked out and full power. I have ordered an ATM disabler and will be putting a can of Textron in the gas at the next fill up. Ive only put a straight pipe exhaust, intake, and a boost controller on it. If you ignore it and keep driving, odds are you will destroy the cam as well. A problem with the software caused the engine to idle with most of their cylinders, thus overheating the exhaust . Im crossing my fingers it does the trick! [], [] as the LS engine familys hybrid engine in trucks and SUVs. Sylinder one lost compression on my 09 5,3. The Jury is still out on the Gen. 5s but the warranty could be an issue. What type of disabler did you go with? My concern is if I leave the non-AFM lifter cover in place & have nothing to plug the 5 pin AFM solenoid connector into, will I get a MIL? They shift cam lobes by sliding the cam, never actually shutting down the value but riding a different lube! She drove it for another 35,000 and it went out again. I went ahead and purchased a Disabler on Amazon, for preventing it happening in the future. A bad lifter can be a minor repair if you get it fixed immediately after you hear an issue. HP tuners is not for someone like me that doesnt know how to use it and from what I read neither the range nor diablo plug and play device will work since the buicks pcm files are different than all other GM vehicles that came with afm because it was tuned in house at gms performance division. Vehicle has been serviced more regular than the manual calls for and the AFM has caused problem after problem with fouled plugs. (Bought car 1 day before lifter died!) Any advice that you could offer would be great. A 17 with 5.3. So now at 168 thousand miles it still runs good but gets bad gass mileage. I still get a P0336 code every once in a while but still good to drive around town. I guess what Im really trying to ask is,, are there any cons/disadvantages to installing the AFM delete Electronic module? Basically rebuilt most of the engine while in the vehicle. Fouls those plugs. Deactivating cylinders at light load forces the throttle valve be opened more fully to create constant power, and allows the engine to breathe easier. 1. [], [] way. They are being forced by the feds to use stuff like AFM to meet the CAFE requirements. Engine oil pressure is fine. I have a 2012 Chevy Avalanche. With that said, the current global chip shortage has been affecting the industry on a wide scale, forcing production halt among several automakers. If under the truck while parked and it is doing it it sounds like it is towards the back of motor. They lasted one year with big problems. But it also restricts passages that the oil runs through. No it runs fine on sylinder one but not on 6 or 7!!! This system is the most effective way to disable AFM. The VLOM consists of 4 electronically operated solenoids and is bolted to the top of the engine block beneath the intake manifold assembly. 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. [] For more information on AFM, including a comprehensive guide on how to completely remove it from your engine, check out this article. Pulled the inntake and replaced valleypan With all the solenoids. If the 4th cylinder lifter has failed, would driving it damage the engine? It has has 9000 miles and no lifter or other issues or codes so far. misfire or anything. 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. My question on a 2007 Chevy Tahoe 5.3 AFM The materials used in the engine were [], I have a 2018 GMC with the Eassist and AFM the body is in great shape. This is what I keep telling people. In 2015, I purchased a new Tahoe with the AFM and two weeks ago with 71K miles on it, the engine light came on. 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). Regards, Take a look at what bmw did in its R1250 bike. Seems like the AFM disabler device is working for a number of people including myself as the 5.3l AFM engine has inherent design faults. From what Ive read new and low mileage engines with no issues is ideal to do a afm delete, tune, or use of a disabler. All I can say is they now try this again and they are still having trouble..when will they ever leave well enough alone. My 2013 LC9 just had #6 lifter fail, got a misfire code but the ticking gave it away. Our patented technology is the only product that will disable Active or Dynamic Fuel Management without reprogramming the factory ECU. 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 just got new warranty engine and dont want this issue again? Are there errors or something only the dealer can clear? The engine will operate on 8cylinders, or V8mode, during engine starting, engine idling, and medium to heavy throttle applications. Brian, I just purchased and installed a remanufactured L76 AFM engine for my 2007 Suburban. Its not GMs choice to use AFM. Help appreciated. Should I buy a Diablo AFM disabler to prevent the new block from dropping to 4 cylinder? 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. There is a filter screen under the oil pressure sender that may be clogged and not getting enough oil to supply the solenoids. Looking forward to input from the forum, Thank you. It looks as if Ill need to start saving for a complete AFM delete kit with a new cam. Disable the afm. The 2016+ Tacomas are junk. I phoned the dealer and gave the VIN number, told it isnt equipped with AFM. [] 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. Constant engine and transmission problems. Thank you again for the response. I also have 08 Burb, but have different symptoms (high oil consumption, blue exhaust smoke at start, and now a really rough start after sitting overnight). Most will want to get rid of the AFM immediately. Question I have a 2015 Silverado and had a transmission go bad when I had it rebuilt I had the AFM/DOD turned off. . One must anticipate this. If you just crack it without it starting it moves all the time . how many miles do you have on your engine? Took it to a shop and they advised that it could be due to the AFM system not functioning properly. whith a disabler. You mentioned that it will shoot oil into the pan and on the cylinder walls possibly causing some oil consumption So i have a running vehicle and my only concern is making it as reliable as possible, should I disable the AFM or not?? I have a Yukon 116k it now needs its 3rd set of lifters and cam. All these comments on the 5.3 are blowing my mind!!!. Pulled right valve cover an rockers on syl 6 dont move. if GM wont make a dependable truck for 60,000 Toyota is sure to take over even with very poor gas mileage . Excess oil will be pushed out of the pressure relief valve into the oil pan. 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. I wear hearing aids, but I thought I heard more engine noises, but after checking the gas cap, the light went out for a week. It does seem that when they start goingthey go quickly. I only had 81k on the motor. My tech just installed the engine, only to notice that he doesnt have anything to plug the AFM solenoid pack into. Double digit MPGs in my 98 K1500 would be a dream lmao. Oh,the throw away vehicle has 77,000 miles and has always had meticulous maintenance . If doing that, the full blown AFM delete is about $1000 depending on how far you go (full overhaul or cam with lifters only). It is currently at the dealer having a new long block installed under warranty. AFMlifters have a history of failing and oil consumption can be a problem. I used 1 quart of tranny fluid in the crankcase ran it for 20 minutes, no luck. Just like Ram and their trash MDS system or Ford and their throwaway Ecobust engines. 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. 8000 grand for the repair mine was 1,700.00 to repair, I had a 2004 small block v8(4.8) 331,000 miles on the truck,it was the usual on the maintenance front axles,etc. I tried the trans fluid in the oil. I have an 07 Yukon with over 180K. Id try the disabler and the screen cleaning first and do the AFM delete if that doesnt solve the problem. TheAFMcylinders are opposite of one another in the firing order. An electromechanical system deactivates and reactivates all 16 of the engine's hydraulic valve lifters, controlling valve actuation. Change your oil. 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 am leaning heavily on installing the AFM disabler. 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. 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? also in the pan is another AFM oil filter near the external engine oil filter. 50,000 miles. 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. It had the AFM wiring & lifter cover installed with solenoid pack in the original engine, we even removed it to inspect. Battery was unplugged for a week.. How did your turn out? Would never take it on a long trip. The Cylinder Deactivation system, known as the Active Fuel Management system by GM, shuts off some of the cylinders when extra power is not needed which improves fuel economy. I dont plan on installing the delete kit at this time. I got a 09 Chevy Ive had the 1 go out then the 7 about 2 weeks apart if I known what I know now I wouldve changed them all at once but now I have a misfire on cyl 4 but it came back in why are these lifters going out one at a time like this the 1st two that went out I was coming off the interstate an stabiltrack came on now the 4 misfired twice both times pullling out my driveway. A new class-action lawsuit has been filed against General Motors over alleged issues with its Generation IV 5.3L Vortec V8 engines. Batten, followed by several years developing performance pistons at Wiseco Piston Co. Today, Brian develops performance parts for Summit Racing Equipment and is a regular OnAllCylinders contributor. Just recently, GM announced a temporary closure. they are known to become plugged. The oil is baked on to every component. it is the regulator guy! 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. The only problem is the extra spray on the cylinder models if a deflector isnt used and this can show up as increased oil consumption. 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. Also I dont recommend doing this as you may be in violation of some emissions standard or manufacturers ethics code . so the trans fluid worked for you then? 2 15 with 5.3 Sierras both with 100k and All Cylinders. Now you tell me AFM works and I will tell you; that you are full of shit! Since the tranny oil worked, you should now change the oil, right? Carbon Build-Up in the Intake Ports. It was the first Gen. IV LS truck engine and offered Active Fuel Management (AFM). Hi. NOTE: Some parts are not legal for use in California or other states with similar laws/regulations. has 92,000 miles and was just told I have cam and lifter failure. 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. AFM sucks Im paying for a truck that has broke down twice replace the cam and lifters and now its broke down again 105000 miles never heard of that in a 350 Chevrolet. Looking for another Toyota at this point to match my 1985 4 runner with 380.000 miles and no issues since new. Then had to drive the truck back to Tampa from Cheifland Fl. Also putting in a new transmission vs. rebuilding. Did Obama make them do this? All the time. I havent has any lifter or cam issues. Happened once 1yr ago, truck was not used for a week and worked fine when i started it back up. GM offers the following diagnostic steps in determining if this is the problem. I have an 07 Silverado 1500 ltz. I have read synthetic isnt good for AFM lifters. Ill Never Ever buy another gm. Took the heads off again. a little burning oil is a minor thing, my main concern is avoiding a multi-thousand dollar repair needed to the motor. Yes a poor design but a flaw ? We chickened out though and just bolted the AFM solenoid plate onto the used engine. 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. I am wondering the same thing. Now I know why there wa such a push to get older ,less efficient vehicles off the roads. Just one. The computers had not evolved enough to control the sytem. Glad I did. Cylinder deactivation is very effective in reducing fuel and reducing the emissions of harmful gases. There are no changes in the valves or the springs. It's been an issue for a while but I've been getting past it by turning the key only to the off position instead of all the way back to "lock". I know a few guys with Tundras. Told her that it would not last and that she needed to find a different way to get around. Now I learn about the cylinder deactivation issue and suggestions to add the Range Technology module to deactivate it. Didnt really notice a loss in power other than the surging, (wondering if thats the engine trying to switch between 4 and 8 cylinders). Never again, except for my gen4 Z28 that has a perfect engine/trans on an otherwise rolling pc of gm crap chassis. The LH6 in 2005-06 was a little different than the one used in 2007-09, but both had AFM. I am not in a position to have a new cam and lifters installed but Im also not in a position to not having a running truck! Because its not just GM that have engine problems. They are taller and have special oil holes. I am having that done today on my 08 Suburban and its only costing me $225. Question i just bought a 2005 Saab 9-7 with 5.3 v8, (same as GMC envoy) which came with AFM, the car runs fine, so if i just install the OBDII electronic device, is it just as likely that my lifters will still go bad? I own a reputable repair shop. Love the truck. Now the problems back, I have 180k miles on it now. The system uses solenoids to deliver oil pressure to control. I told her to never pull the gadget out. 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. Billy, there is some interesting trivia here on the L92. Replaced all lifters on passenger side as well as pushrods for even wear. Get this, rebuild is only rings and maybe lifters. 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. Dont want to make a move on a new truck or jump to a 2500 yet. Last GM Ill ever buy unless its got a diesel. Then changed the oil. 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. We have purchased a used low mileage 6.2L as that is all the extended warranty company would pay for. 4,7 plugs foul runs rough at idle. It works . You also need the disabler installed in your obd connector. Have misfire code and engine has what I would call a surge while driving. Accept i only have 60K on my truck and it hasnt recovered. Cylinder deactivation--branded Active Fuel Management by GM--shuts off some cylinders when extra power isn't needed, to improve fuel economy. I am trying to prevent same issue. Getting ready to diy for $450. I have no clue what to do now. Most will want to get rid of the AFM immediately and VVT isnt for []. The engine had 200K miles. They took the engine down today found so much damage inside they ordered a new engine from Detroit. Will this AFM DISABLER damage anything???. I have already dropped a lot of money on this truck (08 suburban). Or is the shuddering indicative of failed/failing lifters that need to be replaced before moving forward? Wow, thanks for the wisdom,, i checked my VIN Code (position #8, M=LH6) and my 2005 Saab 9-7x does have the LH6 motor with iron block, Are you sure its only 2007 & newer motors? But yes ultimately, it might be time for a cam and any AFM lifters that werent replaced. But not sure very annoying. A tuner can often fix that as well by giving it some more ignition advance in these regions. Any truth to that? I got as high as 23mpg on the highway in my 89 K1500 with 350ci and a five speed manual. The secondary pressure relief in the back of the pan began to open at 55 psi and was completely open by 75 psi. Why doesnt anyone make an aftermarket set of replacement AFM lifters that are the right length but DO NOT COLLPASE! NOTE: A disabler device should ONLY be used if the valvetrain is in good working order. I speak from some experience. Is this an issue only with GM SUVs and trucks, or does it include cars too? Brian, All ready done valve job . lol. For fun, he runs his 427-powered C5 Z06 in ECTA land-speed racing, at OPTIMA street car events, and at a mix of autocross, drag racing, and track days. . Install the disabler when you get your Yukon back and it will remain in good working order. General motors sent out a service bulletins to their dealers however, all dealers will not tell you about the bulletin. Another option is to plug it entirely if the AFM is already removed. 2 15 with 5.3 Sierras both with 100k and Theyre also notorious for bad cam tower oil leaks. We need availability of a replacement engine without the AFM. Why cant you stop the send signals from the computer so that the solenoids dont open and the AFM system is never engaged? Getting 20 mpg in town and 24-28 mpg highway and love the truck now with these mild tweaks. The engine was not Flex Fuel (E85) capable and did not use Variable Valve Timing (VVT) [], [] TheL76like its LS2 siblingis a 6.0L, Gen. 4, aluminum small block engine that was used both in GM cars and trucks. 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. Cant believe they havent fixed this in a decade. Traded it with 180K miles and did not experience any problems. Would you get enough power to drive at freeway speeds? It is replaceable.. just remove oil pan and it will be on top at the filter. [] for performance, LS9 engines didnt use Active Fuel Management (AFM), Variable Valve Timing (VVT), or Flex Fuel (E-85) technology. Don't even get me started on the shortened life of the cooling, starting and charging systems. I would appreciate any feedback. .That was a year ago and now I have a collapsed lifter and the most inexpensive repair $2200.00 for a partial lifter replacement. The result is improved combustion chamber pressure as the piston approaches top . 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. Did not help. 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. . If you left the original cam in, the AFM cylinders will be down about 25 lbs. At least Dodge admitted they had junk transmissions in the early 2000s and picked up sales each. .or something similar . 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. I am going to do the full repair of the engine now, but not an overhaul (too hard to get at the pan). document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); This site uses Akismet to reduce spam. If you scroll back, you will find that it is recommended to change lifters and camshaft and looks some more. I recently took a long trip and it burned 1.5 quarts of oil. 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. , Production date on the vehicle is 04/2006 oddly enough. Thank you. I pulled the head off, replaced the lifter and put the gadget in the ODBII for about $400 total. Friend will send to me from Arizona. Why cant u just unplug the solenoid on back of engine by oil pressure sensor? Dale, I have a 08 Tahoe thats doing the same thing.Any info you have on this would be appreciated, [] Do they have a downside? It has the orings in place, that seals the towers. New plugs and wires. I call it active obama fuel management .A scam . IMHO . Replaced the engine with remanufactured one and had the AFM turned off with a computer hooked to the ECU. Is there any potential down-side to doing this in other words, might this do more harm than good? A problem with cylinder deactivation can be solved by tuning the intake and exhaust valves. Why would GM ever produce such problems with such little to gain. Ayush Srivastava Now it appears GM and their handlers want to push the electric market with throw away junk that is mechanically weak . Just shut AFM off. I ran 0W-20 no more the 5000 miles between changes. 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 ! Toyotas 5.7 is one of the biggest gas guzzlers among half-ton trucks. Since it is not costing me anything out of pocket, I did not go with the Delete Kit (did not want to spend the money). Junk . I ran 0W-20 on more the 5000 miles between changes. In other words, the crankshaft and bearings were not visible. I know I felt the same way. Engines with AFM use a high-volume oil pump. Yes thats true. Toyota has their own problems. 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. This basically deactivates the cylinder deactivation system. thank You so much! It only has about 9k miles on it. A V8 firing all 8 cylinders sees 90 degrees between combustion events, while a 4 cylinder engine lengthens this to 180 degrees. Seafoam with syn oil change only fixed for a week. It is usually first noticed during highway driving. This lowers the cost of building it [], [] aluminum block engine. I sold them when they were new. I have 1999 Silverado with out AFM that gets 21 mpg and a 2008 with it that gets 14.6. Hello Brian, I just purchased a 2018 Silverado with a 5.3 AFM engine, I have 200 km on it. We did take it apart to check for metal possibly being trapped inside, it looked like brand new. The valve itself is part number W0133-2574213. It seems this tough engine has everything incorporated into it. Your email address will not be published. I saw two Summit Racing kits, with different valley coverswhich one do I need for my Yukon? Heres what you need to know: An AFM Delete Kit is recommended when an AFM lifter fails or when doing performance upgrades. I am confused about the plug in disabler. will feel like a jerk asking the clerk at lowes to cut them again. It was good for about 10 miles and started with same loud knock noise. It essentially turns your V8 engine into a V4 which saves fuel. Bought an 07 GMC Yukon 5.3 with the AFM, 87k. 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. Cylinder Deactivation (Active Fuel Management) General Motors Active Fuel Management engine control system has the ability, under certain light load driving conditions, to provide maximum fuel economy by deactivating 4 of the engines 8 cylinders. 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. I didnt even think about AFM until I got to drivee it on the highway and encountered the 4 cyl syndrome. Power will be sent to the rear axle via a beefed-up 4L60E [], Have a problem with 09 Chevy Side note, after 200 hundred miles of trouble free driving the transmission failed so we had to replace that too. 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 got the AMF disabler anyway and so far so good. I may just do that Vic. I have a 12 wit 4.8 Silverado 75000 miles https://www.cargurus.com/Cars/Discussion-t30884_ds822284. With the AFM tuned off, it shouldnt be trying to switch over to four cylinder mode. Got rid of the bobblehead Rancho offroad shocks immediately and replaced with Bilstein coil overs. Im praying that my RangeTech buys me a few years. This new lawsuit is essentially identical to the previous. [] 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. The market for nonhybrid gasoline-powered vehicles is expected to fall by 20 percent during that time, but with tech like smarter cylinder deactivationin these upcoming GM V-8 trucks, for . Every one of these engine will have a lifter fail, this is a travesty! I did a delete on an 07 avalanche and no have no power, any thoughts on what might be going on? We are looking into the AFM Disabler option, but my question is- how do we know if a lifter is already bad or not? 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.



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