Vlom oil filter location 3L engine, covering model years 2007 to 2013. 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. These Solenoids can stick open, But it will cause BOTH rockers on a AFM cylinder to become inactive. Test by removing the VLOM; if the lifter locks and air passes through the VLOM easily, it suggests internal leakage. Here is this pic. 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. Wheel is the oil pressure sensor filter located?If there is a filter inside, it's an early build 2014 (built late 2013). Oil is dripping from the starter as well as the other side where the bell housing meets the engine. 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. 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. 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. 2019-2021 Chevrolet Silverado 1500 Crew Cab Pickup 4dr 4. 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. A restriction in the screen can affect AFM operation and give a false indication of actual engine oil pressure. 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. Check level with dipstick. GM part number 12585328 This filter is mounted behind the oil pressure sending unit. Being that it stops up I'd be cleaning out the engine and switching to a long filter. gauge on dash isnt always accurate. Chevy Forums FREE technical assistance for your restoration and repair. Jan 14, 2011 · Had a persistent and getting worse oil leak on the rear part of the engine of our 2009 Yukon. When it's cold oil pressure is fine. 3L 6. A lot of things seem to come in Three's at repair shops. GMPartsGiant. 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. 3L Engine Oil Schematic Learn about the VLOM's role in AFM lifter function, oil filtration, and maintenance tips for Chevy engines. Is it worth it to pull the intake tonight and retorque all the bolts? How to Remove Oil Pressure Switch Sensor Filter Screen 5. If this is the case, check the VLOM filter screen first. So I found a 2010 LS motor, put gen III lifters, Camshaft in it. 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. The VLOM consists of 4 electronically operated solenoids and is bolted to the top of the engine block beneath the intake manifold assembly. 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. com FREE DELIVERY possible on eligible purchases Jul 9, 2017 · The VLOM is known to fail and often cause these issues. Yes. Engine Professional Magazine - AERA Remove Intake Manifold GM Truck, Accessing The VLOM CrazedPerformanceRepair 44. 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. 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). I haven't got any lifter tick now, but I have a rough idle and a cylinder 1 misfire. If there is oil in the dirty air side of the PCV system, replace the LOMA (VLOM) on 5. 2L (L86) only. 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. All 4 VLOM solenoids are connected in parallel to a fused ignition 1 voltage circuit supplied by the powertrain relay. OBD II readers might show reduced hot oil pressure (at idle) in the VLOM. 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 . The housing of the VLOM incorporates several bleeds in the oil passages to purge any air trapped in the VLOM or engine block. 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. 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. 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. The focus is on installing oil galley and coolant block off plugs to ensure proper functioning of the engine. 1st one is another LMG 5. com FREE DELIVERY possible on eligible purchases No oil in the dirty air side of the PCV system. 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. Finished oil change with same 5w30 mobil one, had also run liquid moly engine flush through engine before work began. The VLOM is basically the valley cover but has the solenoids for the V4 mode lifters. To help you find your oil filter, this comprehensive guide covers everything you need to know about oil filters and their locations. 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. 2620 Saradan Drive • Jackson, MI 49202 www. change out the oil screen/filter under the oil pressure sender in the back of intake on the 5. Oct 16, 2024 · 2008 ltz with 5. 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. 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. When the VLOM fails due to wear, dirty screens, or other problems, it must be replaced or subsequent failures are likely. 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. The AFM system has an operating range from 27 PSI to 66 PSI of oil pressure. 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. The AFM system has an operating range from 27 psi to 66 psi of oil pressure. Hydraulic lifters can begin to fail through normal use of a vehicle. Your goal is to block the Oil feed hole to the VLOM and keep the hole for oil pressure sensor open. Alternatively, feel free to reach out to us for a prompt reply. com AFM Lifter Tech Bulletin Rev 2-122019 To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. If you don't remove the bypass in the oil pan, that can affect the volume required to get to full pressure. 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. 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. 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. 2 days ago · The VLOM (manifold) also frequently develops internal leaks. The VLOM filter is very important as it keeps contaminates out of the AFM Solenoids. All parts are backed by the GM's warranty. 2L: Lifters - Amazon. 2K subscribers Subscribe Sep 10, 2025 · 917-162 Valve Lifter Oil Manifold for Chevrolet Silverado GMC 5. 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. Check the oil pump for proper pressure delivery and inspect the oil filter for blockages. 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. for the oil pump, Id say thats normal. 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. 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. 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. Oct 12, 2011 · Where is the oil filter for our engine (the 5. The small screen prevents contaminants from Oct 1, 2025 · Notes: Engine Valve Lifter Oil Manifold Filter -- New. I hope that this was helpful for you. Welcome Newcomers Only registered users may post in our forums. Or IMO, using 0w20 oil, but that's just me. 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. Buy Genuine GM 12571609 Valve Lifter: Lifters - Amazon. This includes the VLOM filter and the solenoids. 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. There is no need to press or drill plugs into the block with this simple device. 3l silverado and I'm getting a misfire on cylinder 1. 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 . 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. 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. Handyman WIRE Forums General Discussion Auto Repair 2013 Chevy Silverado 5. Nov 9, 2024 · AFM DOD Replacement Kit Gaskets Lifters Trays Bolts VLOM. I do not remember how fast it built its full pressure. AFM VLOM Reseal! 5. Most AFM issues are linked with oil pressure and quality. Shop now for fast shipping and easy returns! Nov 14, 2018 · They come loose, and IMO vibration wears out the gasket surfaces. The oil pressure sensor is a 3-wire sensor which provides oil pressure information to the ECM. . 0L 6. 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. 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. Recently change lifters, vlom, had driver head reseated, replaced driver valve cover, replace timing chain, oil pump, guides. I've got a 2013 5. melling. It is unlikely that any engine noise will be present. Feb 25, 2022 · To control contamination, a small replaceable oil filter is located in the VLOM inlet oil passageway. Aug 26, 2022 · The left over part of the Pressure Sensor probably crushed the VLOM Filter. It is located on rear of block (trans end) in the intake under the oil pressure sender. There will be oil dripping out of the PCV tube in side of the intake manifold. My VLOM Modification Explained CrazedPerformanceRepair 44. 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. (4. P0520 P0521 P0522 Easy way to change oil pressure switch and valve lifter oil filter without removing intake manifold. This kit is specifically designed for the 6. 3l it explains what is going on with all this oil consumtion/lifters noisy and lifters collapting. 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. Only other thing It may be is lower depending on mileage, wear etc. Oct 17, 2014 · check out my pictures on the lifter for 5. 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. This is located in the Cylinder Deactivation Data List of the Tech 2. 2014 Chevrolet Silverado 5. Engines without AFM do not have the screen. Just on a whim I checked my front vlom bolts, one was tight the other just over finger tight. 00 part. 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. Then oil starts spewing out the backside. 9L engine bolt torque specs, common problems and repairs. I previously had a collapsed intake lifter on cylinder 1, and I freed it using the crazed performance method. After that the connector will remain disconnected near 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. Despite being new, VLOMs can fail to close properly, causing oil pressure loss and misfires. 2. A contaminated filter screen can restrict the oil flow to the oil pressure sensor. Has the displacement on demand/active fuel management system started ticking, sticking, or just outright failed on your 2014+ L86 6. 3L V8 FlexFuel Extended Cab Pickup. At higher engine speeds the high side of this operating range is controlled by the AFM oil pressure relief valve. Or, a slight knick on one of the cam Jun 16, 2022 · No oil pressure issues. The one under the oil pressure unit on the back of the VLOM. Cylinder Head Torque specs, timing chain installation, manifolds torque specs, engine assembly. I’m can’t find out what this is. On AFM engines, also replace the VLOM (Valve Lifter Oil Manifold) filter screen that is under 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. 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. 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. 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. 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 and 6L80 transmission and 150K miles. VLOM filter (above left) and filter location (above right). 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. As a result, it is suggested to note the Tech 2 oil pressure parameter at a hot idle. Apparently low oil pressure is or can be the culprit. The AFM activation and deactivation is controlled by the Valve Lifter Oil Manifold or VLOM. 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. A collapsing intake lifter on cylinder 7 indicates a faulty Variable Lifter Oil Manifold (VLOM). Low oil pressure to the VLOM can also cause AFM lifter damage. 5K subscribers Subscribed Chevy Forums FREE technical assistance for your restoration and repair. Filter, Valve Lifter Oil for $8. They can be identified by the compressed state of the exterior spring. In this video, we show the location of the Valve Lifter Oil Manifold (VLOM) on a Chevrolet Avalanche with the 5. May 22, 2012 · The VLOM consists of 4 electrically operated normally closed solenoids that directs engine oil pressure to the deactivating DoD valve lifters. 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. com offers the great deal for genuine GM parts, 12623757. Install until flush with bottom lip of the plug. 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 hidden screen is a small filter positioned below the oil pressure sensor. No oil in the dirty air side of the PCV system. the oil filter adapter will give you the true PSI. Step 1: Remove drain plug, 2. 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. Jun 13, 2017 · If it were me I would and take a good look at the oil filter I'm using also. Check how many step downs you see as well as note the hole locations for oil pressure sensor and VLOM oil feed hole. This helps to ensure less engine noise and longer reliability, due to less wear and tear. Oct 1, 2025 · Notes: Engine Valve Lifter Oil Manifold Filter -- New. That screen is blocking that stufd from going to the VLOM. Mar 19, 2023 · The VLOM connector will remain unplugged because the non-afm valley cover has no plug. Mar 15, 2023 · 3: Clean out and observe hole under allen plug location. 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. Oil pressure when hot or cold is very steady. Dec 29, 2017 · Sounds like you have oil sludge issues. Nov 26, 2022 · unnoticeable to the driver. This was just before I just took the truck to a transmission shop to have the fluid and filter changed. Change oil filter, 3. The easiest and simplest way to convert your OEM Gen 5 VLOM (Valley Lifter Oil Manifold) into a DOD delete valley cover. 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. 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. 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. To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. Its job is to direct the flow of pressurized engine oil to the active fuel management intake and exhaust valve lifters. Ensure oil viscosity matches manufacturer Nov 30, 2016 · Disabling AFM/DOD on LS engines requires plugging the oil-feed holes in the block. Brief instruction on how to locate, clean and repair the VLOM screen filter on GM LC9 V8 engines with Active Fuel Management. Mar 21, 2021 · Hi I have a 2014 gmc sierra 5. Feb 6, 2019 · The Melling tech department is finding that customers are experiencing repeat AFM lifter failures. To ensure reliability, purchase GM part # 12571609 Manifold Assembly, Valve Lifter Oil. Please let me know if you need further assistance, and request me at any time by username (Josh127) for additional questions. 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. 3L (LV3) uses a different VLOM and PCV set up). 2019-2021 Chevrolet Silverado 1500 Standard Cab Pickup 2dr 4. Took my buddy 20 to 30 minutes from start to finish. Generally most known good vehicles will have around 25 PSI (172 KPA) or greater oil pressure at a hot idle with new engine oil. 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. 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. I was also told by a GM mechanic that 2019s don't have this filter. These maintenance, repair, powertrain and collision components are designed and engineered to meet rigorous standards set by General Motors. 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. This indicates an issue with the VLOM manifold assembly. The plugs install by slightly tapping the plugs into the oil galley hole. #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. If your not using the VLOM or have done an AFM delete your probably ok to do so. 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. Directly from GM, genuine parts are superb with regards to quality, longevity, and fit. Thoughts? Hey everyone, I'm hoping I can get some advice here. 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. Model specific subject matter experts, classified ads and more. 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. 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. 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. 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. Apr 26, 2024 · I have a 2015 Yukon with the 5. The oil pressure sensor monitors engine oil pressure and provides information to the ECM. 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. The sending unit must be removed to change the filter. Quick change and tips for changing oil pressure sending unit and valve lifter oil filter WITHOUT removing intake. How to change the oil and oil filter in a 2010 GMC Sierra 1500 SL 5. 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. 3 V6 often faces oil pressure drops at idle and inconsistent readings during driving. These can be used to block AFM oil galleys under the VLOM plate. 3 Liter L83 Ecotec3 Engine! To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. 3. 3L (L83) and 6. Low oil pressure caused by plugged VLOM filter, or VLOM leak causing a "miss timed" reactivation event of the lifter. Aug 1, 2025 · To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. And the gaskets on the VLOM oil ports to the lifter bores also start bleeding pressure off, again IMHO. 76. Please carefully review this video to assist when rebuilding an LS engine with a failed AFM lifter. 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. Fluctuating oil pressure between 20 psi idle and 40 psi driving can indicate oil pump wear or clogged oil passages. Low oil levels cause the system to stop working correctly. It will throw a code if theres an oil pressure concern. Oct 19, 2017 · Have a 2013 1500 5. 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. This whole system is located on the very top of the engine block. 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. The filters can get stuck and have to be removed with a pick. 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. A $4. 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. May 1, 2018 · The VLOM has electrically operated so­lenoids which switch oil pressure to the 4-AFM cylinders. Deposits on the spark plugs only. 3L V6 LV3 VIN: H. 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. Find top brands, exclusive offers, and unbeatable prices on eBay. 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. 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. 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. Please register and join our community! To control contamination a small replaceable oil filter is located in the VLOM inlet oil passageway. Sensor was low on long road trip hover from Apr 3, 2015 · Silverado 4. When this happens.