It will show up as a misfire code in a cylinders 1,4,6, or 7. any help? It uses a M14 x 1.5 thread plug like Dorman 65217. Replaced all lifters on passenger side as well as pushrods for even wear. Getting 20 mpg in town and 24-28 mpg highway and love the truck now with these mild tweaks. I love the car so far. I have a 2011 GMC Sierra 1500 with the 5.3. The engine is running on only four cylinders. Or not because it is the cast iron block and not he aluminum block? I sold them when they were new. Ive read at many websites that the GMCs envoys, Chevys and saabs did start to come with AFM in 2005 with the LH6 motor,It says here it started in 2006 on the saabs, then the pick-ups got AFM in 2007. The cherry on top is its not saddled with Variable Valve Timing (VVT) or Active Fuel Management (AFM) found on some Gen. 4 engines. . Just one or two. 1981 Cadillac V 864. The engine had 200K miles. No other truck my ass .lol my 99 silverado 1500 with the junk LR4 4.8l and 320k miles 9n itgets 21mpg all day long with 93 octane gas in it. I couldnt agree with you less, yet I respect your opinions. they are known to become plugged. Ive been reading, with disgust and concern of the lifter/cam situation. A 17 with 5.3. 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. $8500.00 fix. 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. CAM motion says no just have to disable the AFM and VVT with a stock tune as the camshaft is not an aggressive camshaft but a drop in. They are being forced by the feds to use stuff like AFM to meet the CAFE requirements. what deleter (if thats a real word) have you heard good things about. Told her that it would not last and that she needed to find a different way to get around. Hi Brian please help, yesterday after ice fishing was climbing a hill back home and check engine light flashed. Will the plug in deactivater fix the oil consumption or will it cause more consumption? Only issue might be the oil consumption due to pressure run off and spraying of oil in crankcase? Would you get enough power to drive at freeway speeds? Only running on drivers side cylinders. I drive the same 320 mile trip every two weeks and drive the same route and full tank. It was in the late 70s or early 80s and it was a POS, Your memory serves you pretty well I too have the same nightmares lol. It only has about 9k miles on it. module (ECM) will command the cylinder deactivation system ON to deactivate engine cylinders1, 7, 6, and 4, switching to a V4mode. Brian, I have a 2010 burb with the exact same symptoms and questions as Shawn please help! I just did the delete and replaced the cam as well. My 2013 GMC Yukon XL 6.2L is currently having a failed lifer replaced. Absolutely agree, but we all know GM cant afford to recall them all & definitely wont, gettin a Toyota, but first will go to GM dealer and ask to see a truck without AFM & when they say they dont have it Ill say See ya, I have an appointment with the Toyota dealer! Always had GMs never anything else till now. I am trying to find out of this is true. 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! You also need the disabler installed in your obd connector. Cylinder misfires (most common sign) Rough idling, poor acceleration, loss of power Check engine light with engine misfire codes Air-to-fuel ratios are either running rich or lean The easiest way to tell that you have an injector problem is through the check engine light and engine codes for misfires. He stated if I continued to exceed 4500 RPM it would blow the lifters out. I have ordered an ATM disabler and will be putting a can of Textron in the gas at the next fill up. Toyota will be my next truck unless GM owns up and makes wright with consumers. I bought a 2010 GMC Sierra 5.3L Truck in 2013 with 24K miles. I just bought a 2015 5 3 17000 miles I was thinking about eliminating the 4-cylinder if I delete it with just the programmer will it hurt my motor? Looking forward to input from the forum, Thank you. Since the tranny oil worked, you should now change the oil, right? I got the AMF disabler anyway and so far so good. I have no other engine problems and Id like to fix the issue. Or is the shuddering indicative of failed/failing lifters that need to be replaced before moving forward? I dont know where to being to look for the problem. Engine oil pressure is fine. Gary, [] 3 engines didnt have AFM (Active Fuel Management) or VVT (Variable Valve Timing), so you dont have the expense of an AFM or VVT delete []. There has been a lifter noise since I bought the truck 1 year ago. I have an 07 Yukon with over 180K. Then again, it should have never been controlling those solenoids. Please report back if you have any issues, but I think you are in good shape. I will keep reading and take notes. 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. I havent has any lifter or cam issues. We chickened out though and just bolted the AFM solenoid plate onto the used engine. Any thoughts or suggestions would be appreciated. My 2012 Silverado 5.3L just did the same thing as your Tahoe Brian. 1. [] for performance, LS9 engines didnt use Active Fuel Management (AFM), Variable Valve Timing (VVT), or Flex Fuel (E-85) technology. This lowers the cost of building it [], [] aluminum block engine. Our 2013 yukon with 47k miles just failed. 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. The 1st design (built prior to April 1, 2006) was had afm components but wasnt connected. No problems with any to this point. I recently took a long trip and it burned 1.5 quarts of oil. Im always sorry to hear when people run into issues like these. Ill Never Ever buy another gm. My ignition lock cylinder is completely stuck in lock position with the steering wheel locked as well. Nine plaintiffs filed the General . 4,7 plugs foul runs rough at idle. Can they be faulty? I speak from some experience. Having it fixed now, just curious Seems like a problematic design. Their tech guys have seen it all and may have some thoughts on this as well. General motors sent out a service bulletins to their dealers however, all dealers will not tell you about the bulletin. Now I learn about the cylinder deactivation issue and suggestions to add the Range Technology module to deactivate it. 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. Given maximum engine power is not required during the majority of everyday driving, AFM works to deactivate engine cylinders when they are not needed, such as when cruising on the highway, thus. Next day, fired it up to take the the junk yard and it ran great. In 2010, GM added a deflector (p/n) NAL-12639759 to redirect in into the pan. .IMHO . On one hand it has an aluminum block, which is nice. The trucks are only supposed to use two four. After all we bailed them out of bankruptcy. The valve itself is part number W0133-2574213. If you already own this engine you will need to deactivate the AFM system or even better DO NOT buy any GM vehicle with this engine. Hello! 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? (Bought car 1 day before lifter died!) There is a filter screen under the oil pressure sender that may be clogged and not getting enough oil to supply the solenoids. They shift cam lobes by sliding the cam, never actually shutting down the value but riding a different lube! Put everything back together proper torque, gakets, valve seals, etc. This reduces expense when you build it [], [] intake, and a cable-driven throttle body, plus Im also installing Trick Flows VVT and AFM delete kits. Now i have my mechanic trying to follow a YouTube video I saw with a guy and a rod and a hammer. The engine also had 799 or 243 casting heads which are closely related to the LS6. The only solution is to replace the entire cylinder head. 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. A lot of drivers reported losing 2-4 quarts of oil in between oil changes. Vortec 5300s featuring LH6 and LC9 engines are prone to failing spark plugs due to carbon build-up. 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. NOT GOOD!! Side note, after 200 hundred miles of trouble free driving the transmission failed so we had to replace that too. I don know what else would cause the surge, but Id research the misfire code and see which cylinder is problematic. Still have no power. Its not GMs choice to use AFM. The problem:. If buying a tuner/chip which works best for that truck/engine? 330-630-0240. 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. We recommend taking the truck to a local chassis dyno tuner and talking with them about a reflash. 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. 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. At this state, a disabler would probably do what you need it to do. Looking to tear down myself. AFM works by deactivating half of the engines cylinders under certain circumstances to reduce fuel usage. Covers me to 100K. Then it takes out the lifter again and again until you bite the bullet and replace the cam. The materials used in the engine were [], I have a 2018 GMC with the Eassist and AFM When you eliminate the AFM system, the extra oil is no longer needed. I cant really tell from driving. 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. The pressure relief in the pan opens at around 45psi to prevent over pressurization of the vlom solenoids. The car runs great apart from the shuddering at those speeds. Plug the tuner into your GM vehicle's OBDII diagnostic port, and follow the instructions provided to update the engine control module's program The new program will make sure that AFM never engages. Just recently, GM announced a temporary closure. It has has 9000 miles and no lifter or other issues or codes so far. [], [] way. Should I buy one to disable the V4 mode? Its Chrysler and Ford. I have an 08 Suburban that is currently getting the lifters replaced a second time within a three month span. I had privilege to work on some of that garbage they never did work . 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. Give the folks in Summit Racings tech department a call (330-630-0240) and they can work on a solution for you. Service manager said nothing else needs to be replaced because the engine has a Teflon coating. Then I guess I have to spend a bunch of money and get the delete kit. I have a 12 with 4.8 Silverado 75000 miles The 2nd went with a conventional valvetrain. 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 []. I just got new warranty engine and dont want this issue again? It prevents the computer from switching over to four-cylinder mode. I would say maybe 5% of my customers keep up on their oil changes. You could also have tried that if the trans oil didnt work. Change your oil. If I had wanted a 4 banger I would have bought one. I did a delete on an 07 avalanche and no have no power, any thoughts on what might be going on? Yeh truck has 5237 miles on it If you installed a factory truck cam, there shouldnt be any particular reason for it to be down on power. Dont want to make a move on a new truck or jump to a 2500 yet. [], I have 2007 5.3 its a new motor this truck scares me 9000.00 these trucks are jokes Solenoids, new lifters also test voltage to solenoid pack all good their, Every one of these engine will have a lifter fail, this is a travesty!
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