Vlom oil filter location Oct 1, 2025 · Notes: Engine Valve Lifter Oil Manifold Filter -- New. Fluctuating oil pressure between 20 psi idle and 40 psi driving can indicate oil pump wear or clogged oil passages. 2019-2021 Chevrolet Silverado 1500 Crew Cab Pickup 4dr 4. After several years of running the engine of your Mar 14, 2024 · The filter/screen at the sensor is to protect the VLOM, not the sensor, so with a non-DOD valley cover there is no screen. Mar 19, 2023 · The VLOM connector will remain unplugged because the non-afm valley cover has no plug. 1st one is another LMG 5. VLOM filter (above left) and filter location (above right). AFM VLOM Reseal! 5. com offers the great deal for genuine GM parts, 12623757. com AFM Lifter Tech Bulletin Rev 2-122019 To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. 3 Liter L83 Ecotec3 Engine! To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. P0520 P0521 P0522 Easy way to change oil pressure switch and valve lifter oil filter without removing intake manifold. Please carefully review this video to assist when rebuilding an LS engine with a failed AFM lifter. Just on a whim I checked my front vlom bolts, one was tight the other just over finger tight. com FREE DELIVERY possible on eligible purchases Jul 9, 2017 · The VLOM is known to fail and often cause these issues. Install until flush with bottom lip of the plug. com FREE DELIVERY possible on eligible purchases Insure VLOM bolts are torqued to 18-19 lbs and insure everything buttons up tight Send ECM for afm/dod delete before driving My VLOM bolts were barely finger tight (the front two I can reach so far) my oil pressure is a little low wondering if the bolts torqued correctly and VLOM filter clean will improve. May 22, 2012 · The VLOM consists of 4 electrically operated normally closed solenoids that directs engine oil pressure to the deactivating DoD valve lifters. 2014 Chevrolet Silverado 5. melling. To help control contamination within the active fuel management hydraulic system, a small replaceable oil filter (4) is located in the valve lifter oil manifold oil inlet passage. I think it might be one of the solenoid valves in the vlom passing oil Product Description AFM DOD Oil Block Off Plugs for Chevrolet 2005-2018 Gen IV & 2014-Current Gen V Quantity 8 AFM/DOD plugs used to block oil passages in 2005-2018 Gen IV / V engines. These can be used to block AFM oil galleys under the VLOM plate. May 15, 2022 · Replaced oil sensor and oil sensor screen, all spark plugs ( had at least 80k on them), dropped oil pan , replaced oil pump inlet tube oring, was hard and flat, and added the oil pressure divertor shield above oil filter in pan. After reading many posts it seems that some of the lifter failures Dec 29, 2023 · I tied this into a fitting in the oil port directly after the oil pump on the front driver side of the block. Despite being new, VLOMs can fail to close properly, causing oil pressure loss and misfires. Low oil pressure to the VLOM can also cause AFM lifter damage. In this video, we show the location of the Valve Lifter Oil Manifold (VLOM) on a Chevrolet Avalanche with the 5. Thank you for using Welcome to the Trick Shift Garage! In this video, we're going to show you (step-by-step) how to change the oil on your Chevrolet/GMC Truck or SUV that has a 5. Yes. And then install a separate gauge to the vlom and compare both readings this will tell you if you're losing oil pressure on the bottom end or the top end. Feb 24, 2014 · GM ORIGINAL EQUIPMENT GM Genuine Parts and ACDelco Original Equipment are the true OE parts installed during production or validated by General Motors for GM vehicles. Nov 9, 2024 · AFM DOD Replacement Kit Gaskets Lifters Trays Bolts VLOM. GMPartsGiant. Smaller micron filters are great unless the stop up and the bypass opens sending debris on to stop up the screen or just lower the oil pressure. Part 4 of the oil pressure switch removal and the filter screen removal basically just going over with tools you need and how to do it how to access it where it's located very easy very simple to impala 3. Aug 26, 2022 · The left over part of the Pressure Sensor probably crushed the VLOM Filter. The small screen prevents contaminants from Oct 1, 2025 · Notes: Engine Valve Lifter Oil Manifold Filter -- New. Mar 21, 2021 · Hi I have a 2014 gmc sierra 5. 3L engine, covering model years 2007 to 2013. Ensure oil viscosity matches manufacturer Nov 30, 2016 · Disabling AFM/DOD on LS engines requires plugging the oil-feed holes in the block. Oct 19, 2017 · Have a 2013 1500 5. These maintenance, repair, powertrain and collision components are designed and engineered to meet rigorous standards set by General Motors. #chevy #vlom #automotive #engine The AFM oil pressure relief valve regulates the oil supplied to the VLOM and is located in the oil pan near the oil filter housing. Sticking Valve: Generally, a sticking valve on this engine family will cause an engine misfire that may or may not be felt and it may occur consistently or intermittently. Feb 4, 2015 · With that being said at this point I would install a manual gauge to the oil filter adapter take my reading there. Jan 25, 2016 · Low oil pressure to the VLOM can the new VLOM could correct a low oil pressure concern if there is an internal leak or plugged . The AFM oil pressure relief valve regulates the oil supplied to the VLOM and is located in the oil pan near the oil filter housing. When it's cold oil pressure is fine. The AFM system has an operating range from 27 PSI to 66 PSI of oil pressure. 00 part. The focus is on installing oil galley and coolant block off plugs to ensure proper functioning of the engine. Dec 19, 2013 · I leave the Valley Lifter Oil Manifold Solenoids unplugged & Turn off all 4 Solenoid Circuit DTC's along with disabling the AFM Function. No oil in the dirty air side of the PCV system. If you are doing warranty work, and deleting isn't an option, it is highly advised to replace the VLOM with a genuine GM module and replace its filter under the oil sending unit. Jun 5, 2018 · GM ORIGINAL EQUIPMENT GM Genuine Parts and ACDelco Original Equipment are the true OE parts installed during production or validated by General Motors for GM vehicles. Finished oil change with same 5w30 mobil one, had also run liquid moly engine flush through engine before work began. It is unlikely that any engine noise will be present. Location of Oil Filter in Different Cars The AFM oil pressure relief valve regulates the oil supplied to the VLOM and is located in the oil pan near the oil filter housing. Engines without AFM do not have the screen. This whole system is located on the very top of the engine block. 2620 Saradan Drive • Jackson, MI 49202 www. The hydraulic lifter in a car's engine uses oil pressure to adjust a plunger and take up all the clearance in the valve train. Test by removing the VLOM; if the lifter locks and air passes through the VLOM easily, it suggests internal leakage. Please register and join our community! To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. 3l it explains what is going on with all this oil consumtion/lifters noisy and lifters collapting. 3 V6 often faces oil pressure drops at idle and inconsistent readings during driving. I hope that this was helpful for you. This was just before I just took the truck to a transmission shop to have the fluid and filter changed. misfire service bulletin - FullSizeChevy: Does anyone know any info on the TSB for 2007-2011 Silverado for a check engine light also replace the VLOM (Valve Lifter Oil Manifold) filter screen that is May 31, 2017 · When diagnosing with a Tech 2 or equivalent and the oil pressure parameter is low but the oil pressure is normal at the oil filter housing, inspect the AFM valve lifter oil filter screen (located beneath the oil pressure sensor) for evidence of sludge. OBD II readers might show reduced hot oil pressure (at idle) in the VLOM. 3) located and can it be accessed from under the truck as it sits, or are ramps or a jack neccessary? I've done my own oil changes on several vehicles before, but looking around the other day, I did not see the oil filter on my new truck and wondered where it might be. ECM (Engine Control Module) and Oil Pressure Sensor: A faulty ECM or pressure sensor will not properly analyze the incoming signal from the oil pressure sensor resulting in incorrect function of the lifters. Step 1: Remove drain plug, 2. Here's a quick and easy tool from Lingenfelter for that job! Where is the Engine Oil Filter Located? Curious about the location of your car's oil filter? This is a question frequently asked by many vehicle owners, and the response may differ based on your vehicle's brand and model. 3 P0300 P0420 P0430 P0523 Rainman Ray's Repairs 637K subscribers Subscribe May 23, 2022 · The AFM activation is controlled by the VLOM, which dictates the delivery of pressurized engine oil to the AFM mechanism. 3l, pull it out with a pick or a screw or something, you will find sludge buildup on the lower half of the Mar 1, 2018 · the VLOM inlet oil passageway. 0L 6. 5K subscribers Subscribed Jan 26, 2021 · The filter under the oil pressure sensor in Gen IV LS engines is to protect the VLOM solenoids from debris. Or, a slight knick on one of the cam Jun 16, 2022 · No oil pressure issues. Are you checking pressure with the sensor's reported values in the scanner or checking it properly with a real proper mechanical gauge? Jan 2, 2022 · Back story Bought the truck 1-1-22 145,017 miles 5400 hrs no leaks no oil pressure issues IRRC it was around 30 at idle and over 40 on the highway. Brief instruction on how to locate, clean and repair the VLOM screen filter on GM LC9 V8 engines with Active Fuel Management. Oct 17, 2014 · check out my pictures on the lifter for 5. To control any contamination to the DoD hydraulic circuits, a small replaceable oil screen is located in the VLOM oil inlet passage, below the oil pressure sensor. 3L 2008 Silverado that was also missing on #4, It's getting a full AFM delete with a LQ4/LQ9 Camshaft the VLOM inlet oil passageway. Aug 13, 2021 · Symptoms of a low oil pressure condition have become a common complaint on GM vehicles equipped with active fuel management, sometimes referred to as displacement on demand. The video explains the differences between the plugs used to block off oil galleys and Remove Intake Manifold GM Truck, Accessing The VLOM CrazedPerformanceRepair 44. This kit is specifically designed for the 6. Apparently low oil pressure is or can be the culprit. My VLOM Modification Explained CrazedPerformanceRepair 44. If there is oil in the dirty air side of the PCV system, replace the LOMA (VLOM) on 5. GM part number 12585328 This filter is mounted behind the oil pressure sending unit. Dec 29, 2017 · Sounds like you have oil sludge issues. Your goal is to block the Oil feed hole to the VLOM and keep the hole for oil pressure sensor open. On AFM engines, also replace the VLOM (Valve Lifter Oil Manifold) filter screen that is under the oil pressure sensor. Only other thing It may be is lower depending on mileage, wear etc. The sending unit must be removed to change the filter. It will throw a code if theres an oil pressure concern. I’m can’t find out what this is. Nov 29, 2019 · It talks about the filter in the VLOM getting dirty as one cause that leads to missed timing in latching and delatching the lifter causing the collapse. Oil pressure when hot or cold is very steady. Is it worth it to pull the intake tonight and retorque all the bolts? How to Remove Oil Pressure Switch Sensor Filter Screen 5. Change oil filter, 3. At higher engine speeds the high side of this operating range is controlled by the AFM oil pressure relief Jan 24, 2024 · On 5. This includes the VLOM filter and the solenoids. Generally most known good vehicles will have around 25 PSI (172 KPA) or greater oil pressure at a hot idle with new engine oil. 3. As a result, it is suggested to note the Tech 2 oil pressure parameter at a hot idle. Aug 11, 2022 · Pan gasket could be blown out between the oil gally and filter dumping oil back into pan and not pressuring up lifter galley do your homework ??? To help control contamination to the hydraulic circuits, a small replaceable oil screen is located in the VLOM oil inlet passage, below the oil pressure sensor. Recently change lifters, vlom, had driver head reseated, replaced driver valve cover, replace timing chain, oil pump, guides. And the gaskets on the VLOM oil ports to the lifter bores also start bleeding pressure off, again IMHO. Aug 31, 2011 · The housing of the oil manifold incorporates several oil bleed passages that continually purge trapped air from the manifold and engine block. Oct 16, 2024 · 2008 ltz with 5. If plugs ever need The AFM oil pressure relief valve regulates the oil supplied to the VLOM and is located in the oil pan near the oil filter housing. The plugs install by slightly tapping the plugs into the oil galley hole. Chevy Forums FREE technical assistance for your restoration and repair. 5K subscribers Subscribed Chevy Forums FREE technical assistance for your restoration and repair. 2019-2021 Chevrolet Silverado 1500 Standard Cab Pickup 2dr 4. Wheel is the oil pressure sensor filter located?If there is a filter inside, it's an early build 2014 (built late 2013). The VLOM consists of 4 electronically operated solenoids and is bolted to the top of the engine block beneath the intake manifold assembly. Drive the Vehicle Daily after that to accumulate around 300 Miles before performing a Final Post-Procedure Oil and Filter Change using Mobil1 and a K&N Oil Filter. A contaminated filter screen can restrict the oil flow to the oil pressure sensor. I added half a quart of ATF to the oil about 300 miles ago before changing the oil in which I used Valvoline full synthetic and a purolater boss filter with half a quart of lucas stabilizer. the oil filter adapter will give you the true PSI. What you can do is lay the old AFM vlom in the engine bay and plug in the connector, that will allow you to drive the Tahoe to the shop to have it tuned. 3l silverado and I'm getting a misfire on cylinder 1. Mar 15, 2023 · 3: Clean out and observe hole under allen plug location. Feb 8, 2019 · The VLOM is a critical component to the entire system, as it regulates and distributes the pressurized oil needed to deactivate and reactivate the lifters as the AFM system commands. change out the oil screen/filter under the oil pressure sender in the back of intake on the 5. Here is this pic. Deposits on the spark plugs only. 3L V8 FlexFuel Extended Cab Pickup. The oil pressure sensor monitors engine oil pressure and provides information to the ECM. Has the displacement on demand/active fuel management system started ticking, sticking, or just outright failed on your 2014+ L86 6. How to change the oil and oil filter in a 2010 GMC Sierra 1500 SL 5. Aug 31, 2017 · For oil to reach the oil pressure sensor, the oil has to pass through an AFM oil filter screen. Add oil, 4. To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. Melling has found, through its warranty replacement program, that an unusually high number of lifter failures aren’t actually failures of the lifters themselves, but rather are due to either oil pressure or oil Apr 28, 2008 · To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. Feb 25, 2022 · To control contamination, a small replaceable oil filter is located in the VLOM inlet oil passageway. A $4. When the VLOM fails due to wear, dirty screens, or other problems, it must be replaced or subsequent failures are likely. 4 days ago · 1 x ACDelco (12623757) Engine Valve Lifter Oil Manifold Filter. 3L engines, most common locations for oil leaks include a degraded oil pan gasket, oil pressure sending unit, oil filter adapter, valve cover gasket, rear cover gasket, rear main seal, or flywheel area, and near the bolts of transmission bell housing area. Noticed over past 2 weeks pressure was lower than normal 22 idle to 38 while running along (while warm). Symptoms Have low oil pressure at idle when the motor is warm. A restriction in the screen can affect AFM operation and give a false indication of actual engine oil pressure. GM suggests removing the intake to access it Feb 25, 2022 · To control contamination, a small replaceable oil filter is located in the VLOM inlet oil passageway. Aug 15, 2021 · What did you do with the lifter valley cover (VLOM)? Replaced with the non-AFM version? Is the oil pump high volume? If not, that's your problem. The one under the oil pressure unit on the back of the VLOM. Jan 16, 2014 · The engine has an additional oil filter that filters the oil going to the lifters to control the locking pins for cylinder activation. it was 74deg in Fort Worth when I bought the truck and by the time I drove it the 45 miles Jun 14, 2008 · I've heard that disabling the AFM will stop oil flow to the vlom so when you do unplug the range or a disabler it will send crap/scuzzy oil towards the lifters (or even collect behind them) and then trashing them. Oct 22, 2014 · New VLOM filter screen Royal Purple Synthetic Oil Soak new lifters in royal purple oil for 24 hrs, Replace all parts, before add new oil, drain rest of old oil, run regular synthetic and transmission fluid to de-gunk engine (just to be safe), drain again, fill with new purple oil and then test fire. 2L GM GMC Chevy Yukon Denali Suburban Aug 31, 2017 · For oil to reach the oil pressure sensor, the oil has to pass through an AFM oil filter screen. 3 and 6L80 transmission and 150K miles. There will be oil dripping out of the PCV tube in side of the intake manifold. A collapsing intake lifter on cylinder 7 indicates a faulty Variable Lifter Oil Manifold (VLOM). If this is the case, check the VLOM filter screen first. Cylinder Head Torque specs, timing chain installation, manifolds torque specs, engine assembly. Simply remove the hex cap from the factory VLOM, remove the filter screen, push in the cavity plug, reinstall the hex cap, and you're done! This cavity plug features two O-rings that block off I have oil leaking, looks to be coming from above oil filter. It is located on rear of block (trans end) in the intake under the oil pressure sender. Quick change and tips for changing oil pressure sending unit and valve lifter oil filter WITHOUT removing intake. Took my buddy 20 to 30 minutes from start to finish. for the oil pump, Id say thats normal. The AFM activation and deactivation is controlled by the Valve Lifter Oil Manifold or VLOM. 76. 2 days ago · The VLOM (manifold) also frequently develops internal leaks. When I went to replace that VLOM gasket and took the intake off, about 7 out of the 11 bolts holding the cover down were FINGER LOOSE. Apr 3, 2022 · Done a ton of prep for this incl: Oil pan pickup tube o ring replaced Afm disabled with black bear tune Rear end oil changed Transmission pan dropped, filter changed and fluid replaced. Jan 14, 2015 · To control any contamination to the hydraulic circuits, a small replaceable oil screen is located in the VLOM oil inlet passage, below the oil pressure sensor. 3 vin7 with 125k So if tried the oil pressure sensor sensor, the screen under it, put in a k and n oil filter, and replaced the pump. The filters can get stuck and have to be removed with a pick. Low oil levels cause the system to stop working correctly. Jun 13, 2017 · If it were me I would and take a good look at the oil filter I'm using also. I've got a 2013 5. To ensure reliability, purchase GM part # 12571609 Manifold Assembly, Valve Lifter Oil. Feb 13, 2019 · So after getting the dreaded lifter issue (Cylinder 6) I decided to put a reman engine in with the DOD/AFM delete, so hopefully this wouldn't ever happen again- and due the fact that I had 190K miles on my 2007 Avalanche. 0L 12571609 The AFM oil pressure relief valve regulates the oil supplied to the VLOM and is located in the oil pan near the oil filter housing. The VLOM is basically the valley cover but has the solenoids for the V4 mode lifters. Handyman WIRE Forums General Discussion Auto Repair 2013 Chevy Silverado 5. Jan 14, 2011 · Had a persistent and getting worse oil leak on the rear part of the engine of our 2009 Yukon. Dec 17, 2011 · If everything is Normal, perform another Oil Change using the Cheap Oil Filter and Cheap Motor Oil BUT WITHOUT USING THE ATF this time. Model specific subject matter experts, classified ads and more. Low oil pressure caused by plugged VLOM filter, or VLOM leak causing a "miss timed" reactivation event of the lifter. I haven't got any lifter tick now, but I have a rough idle and a cylinder 1 misfire. This helps to ensure less engine noise and longer reliability, due to less wear and tear. Sensor was low on long road trip hover from Has the displacement on demand/active fuel management system started ticking, sticking, or just outright failed on your 2014+ L86 6. Sensor was low on long road trip hover from Apr 3, 2015 · Silverado 4. 3L Engine Oil Schematic Learn about the VLOM's role in AFM lifter function, oil filtration, and maintenance tips for Chevy engines. 3 I recently had an oil change, shortly after i got the code pod6dd low oil pressure and if i drove the truck for about an hour straight the light would come on every time after getting the code cleared. There is no need to press or drill plugs into the block with this simple device. Apr 26, 2024 · I have a 2015 Yukon with the 5. Hydraulic lifters can begin to fail through normal use of a vehicle. 2K subscribers Subscribe Sep 10, 2025 · 917-162 Valve Lifter Oil Manifold for Chevrolet Silverado GMC 5. 3L (L83) and 6. 2L: Lifters - Amazon. Find top brands, exclusive offers, and unbeatable prices on eBay. Dec 9, 2012 · The AFM oil pressure relief valve regulates the oil supplied to the VLOM and is located in the oil pan near the oil filter housing. Jan 25, 2022 · Buy GM Genuine Parts 12698755 Valve Lifter Oil Manifold with Solenoid, Gasket, Filter, Retainer, Bolts, and Cap: Lifters - Amazon. Nov 20, 2024 · Buy Genuine GM 12698755 Valve Lifter Oil Manifold VLOM with | 8 AFM Lifters | 8 LS7 Style Roller Lifters | FITS 2006-2014 Chevy LS Gen4 Gen-4 5. Shop now for fast shipping and easy returns! Nov 14, 2018 · They come loose, and IMO vibration wears out the gasket surfaces. The rockers will actuate a couple times while the engine first cranks up (Before oil pressure builds) Then they will stop Oct 29, 2020 · My main suspect is the VLOM gasket (GM part # 89017690), I've personally checked: the rear main seal (looks dry, thank God), oil pressure sensor and valve cover gaskets, all dry. All 4 VLOM solenoids are connected in parallel to a fused ignition 1 voltage circuit supplied by the powertrain relay. A lot of things seem to come in Three's at repair shops. These Solenoids can stick open, But it will cause BOTH rockers on a AFM cylinder to become inactive. 3L V6 LV3 VIN: H. Top of the filter head has an oil temperature gauge as well as a pressure gauge, which being so close to the pump reads about 10 psi more than at the location for the standard sending unit. The place where the oil cooler lines attached was dry and so was the fly wheel (looking through the access cover) so i don't Dec 19, 2013 · Had 2 more trucks come in with AFM issues after I fixed the 2008 Silverado for a good customer on the cheap. Got Feb 2, 2018 · To help control contamination within the active fuel management hydraulic system, a small replaceable oil filter is located in the valve lifter oil manifold oil inlet passage. At higher engine speeds the high side of this operating range is controlled by the AFM oil pressure relief valve. 3L 6. Jan 13, 2020 · I was wondering if anybody has any experience changing out the VLOM oil screen in the 2015-2020 Yukons/Tahoes? When running a search it seems as though our engines may not have them, but I am unable to confirm that's the case. At idle when warm, it's at about Jan 25, 2016 · Low oil pressure to the VLOM can the new VLOM could correct a low oil pressure concern if there is an internal leak or plugged . So I found a 2010 LS motor, put gen III lifters, Camshaft in it. Check the oil pump for proper pressure delivery and inspect the oil filter for blockages. DO YOURSELF A FAVOR AND CHANGE THIS F May 15, 2006 · This video by GM is 5 years old, but I've never seen it discussed. 2L (L86) only. I changed the oil sensor and it is still came on, I changed Oil Pressure Sensor & Lifter screen filter Replacement 2015+ GM Yukon, Tahoe, Sierra, Silverado, sub Danny Johnson’s Garage 123K subscribers Subscribed Mar 15, 2016 · That's right, I have discovered there is an oil filter for the lifter oil flow. Then oil starts spewing out the backside. The housing of the VLOM incorporates several bleeds in the oil passages to purge any air trapped in the VLOM or engine block. All parts are backed by the GM's warranty. The symptoms may be the result of one of two malfunctioning pressure regulating valves or from a restriction in a filter screen positioned beneath the oil pressure sensor. Its job is to direct the flow of pressurized engine oil to the active fuel management intake and exhaust valve lifters. This is located in the Cylinder Deactivation Data List of the Tech 2. May 1, 2018 · The VLOM has electrically operated so­lenoids which switch oil pressure to the 4-AFM cylinders. The VLOM filter is very important as it keeps contaminates out of the AFM Solenoids. This hidden screen is a small filter positioned below the oil pressure sensor. They can be identified by the compressed state of the exterior spring. Filter, Valve Lifter Oil for $8. 2L truck? SDPC's repair kit for GM vehicles equipped with DOD or AFM will equip you with the parts you need to repair the failure. 9L engine bolt torque specs, common problems and repairs. I was also told by a GM mechanic that 2019s don't have this filter. The oil pressure sensor is a 3-wire sensor which provides oil pressure information to the ECM. gauge on dash isnt always accurate. 2. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Check how many step downs you see as well as note the hole locations for oil pressure sensor and VLOM oil feed hole. This indicates an issue with the VLOM manifold assembly. 2L Gen V L86 engine and includes the following: Includes: - (OPTIONAL) GM factory Did you follow the install procedure for the high pressure fuel pump? if not, they can be rather noisy. If you stop up that screen, what is settling in the lifters? To help control contaminates within the AFM system, a small filter screen is located in the VLOM beneath the oil pressure sensor (see Fig 2). After that the connector will remain disconnected near the oil pressure sensor. If your not using the VLOM or have done an AFM delete your probably ok to do so. Nov 26, 2022 · unnoticeable to the driver. The AFM system has an operating range from 27 psi to 66 psi of oil pressure. Thoughts? Hey everyone, I'm hoping I can get some advice here. com FREE DELIVERY possible on eligible purchases No oil in the dirty air side of the PCV system. Feb 6, 2019 · The Melling tech department is finding that customers are experiencing repeat AFM lifter failures. Oil is dripping from the starter as well as the other side where the bell housing meets the engine. . Engine Professional Magazine - AERA Remove Intake Manifold GM Truck, Accessing The VLOM CrazedPerformanceRepair 44. At higher engine speeds the high side of this operating range is controlled by the AFM oil pressure relief Explore a wide range of our Valve Lifter Oil Manifold selection. When this happens. Oct 12, 2011 · Where is the oil filter for our engine (the 5. Please let me know if you need further assistance, and request me at any time by username (Josh127) for additional questions. Welcome Newcomers Only registered users may post in our forums. To help you find your oil filter, this comprehensive guide covers everything you need to know about oil filters and their locations. Check level with dipstick. I previously had a collapsed intake lifter on cylinder 1, and I freed it using the crazed performance method. Or IMO, using 0w20 oil, but that's just me. Changed the oil bypass cover and gasket above the oil filter, oil pressure sensor, Oil Pan gasket (a royal pain in the Butt), tighten all VLOM cover bolts, all with no success other than making it a bit Nov 14, 2011 · To control any contamination to the hydraulic circuits, a small replaceable oil screen is located in the VLOM oil inlet passage, below the oil pressure sensor. Alternatively, feel free to reach out to us for a prompt reply. That screen is blocking that stufd from going to the VLOM. The easiest and simplest way to convert your OEM Gen 5 VLOM (Valley Lifter Oil Manifold) into a DOD delete valley cover. Any time an engine has failed AFM lifters the lifter guides must be replaced, the lifter bores must be measured, the VLOM filter unde r the oil pressure sender must be replaced, and the VLOM must also be tested for proper operation, or replaced. Being that it stops up I'd be cleaning out the engine and switching to a long filter. (4. Most AFM issues are linked with oil pressure and quality. I do not remember how fast it built its full pressure. If you don't remove the bypass in the oil pan, that can affect the volume required to get to full pressure. Buy Genuine GM 12571609 Valve Lifter: Lifters - Amazon. Aug 1, 2025 · To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. 3L (LV3) uses a different VLOM and PCV set up).