4l80e cooler line flow direction. The G20 vans I have also flow down.

4l80e cooler line flow direction I have a 4L80E in a project, and there is very limited space in the transmission tunnel. 4r70w transmission cooler line diagram - MemonaVenice. 99 Tahoe and 97 Van. I will be posting a write up on this in a day or two. They have all had the inlet at the top and outlet on the bottom. Transmission Cooler Guides & Info. ly/1TeXSiUGive us a call at 800-708-0087Curt shows the coolant lines on a 700R4 and explains the process of correctly hooking t Schematic fold accomplished4l60e transmission cooler lines diagram 4l80e fluid flow diagramChevrolet avalanche 1500 4wd. 0 LS powered truck , an older 5. 6l80 transmission cooler line diagram & flow directionAdded oem dual oil coolers to touring fd Gmc 1995 Chevrolet G30 transmission, 4L80e, dropped out of overdrive. 8, 5. com: 6AN 70" Transmission Fluid Oil Cooler Hose Line kit for GM Chevy Transmission 4L80E TH350 TH400 4L60E 700R4 200-4R TR6060 Ford AOD 4R100 4R70W and C5 Stainless Steel Braided PTFE Hose : Automotive. Skip to content. Next Article 4l80e Transmission Parts Diagram. the 4l80e automatic transmission cooler lines carry fluid from the transmission to the cooler and then back to the transmission for proper cooling and lubrication. 3, or 6. However, that’s just a rule of thumb, so it could b Find the location and direction of the cooler return line for various transmission types and models. Check Details Transmission line coolant locations cooler lines fluid location which ports 1997 1996 stumped likes 1062. light duty trucks for 1991. I have yet to see a GM cooler flow up from the factory. This was used to address cooling issues. 0 L, 4x4, If you look inside that port of the radiator where the cooler line goes you will see how it has fins inside of it. Tru Cool 40k Specs. You want the fluid in the cooler longer so the heat is transfered. Automatic Transmission - Everything you need to know about tranny coolers (4l60E F-Body) - I recently installed a Transmission cooler on my '95 Firebird with a built 4L60E and did quite a bit of research before I bought and installed it, so I decided to do a write up and provide a few links of what seems to be common I am trying to determine which way the transmission fluid flows in my 1951 powerglide trans cooler. Here's some thing to consider. Computer reported 143° temp, gun showed 128° on pan bottom, and cooler lines and cooler were at ambient temperature of 78°. This was also the recommendation by the tranny shop that built my 4L80E for 1000hp (my engine isn't that powerful but the trans can hold it). View 4l60e transmission cooler line diagrams that route to the radiator and to Transmission cooler 4l80e Questions. 5td, 4l80e, HX40wii 369K miles, ssdiesel pmd on heat sink behind grill Run the truck up to operating temp and then check to see which transmission oil cooler line is hotter or TRANSMISSION FLUID COOLER FLUSHING AND FLOW TEST (J Only GM Goodwrench DEXRON®VI automatic transmission fluid should be. 6l80e / Books & Manuals. Does anyone know the direction of flow for the transmission cooler. LATE Lubrication-Circuit - Page 2 - LS1TECH - Camaro Using the cooler to flush is asking for expensive trouble on the 6R80. MONSTER'S Website: http://bit. 6l80 Transmission Cooler Flow Direction. I'm going to check again this afternoon to confirm it again. The lower right is in from radiator or external trans cooler. where I got my transmission: Rodney, Quick question: My transmission temp gauge stays right around 200 once it is warmed up. Hello all. What Does A Control Solenoid Do at Elaine Axtell blog Cooler auxiliary cooling gm infiniti inlet g35. They also started using a clip in design Fitting Location Thread Size Flow Direction Upper ¼" Pipe Cooler feed/out Lower ¼" Pipe Return/in TH350, TH250 Lower ¼" Pipe Cooler feed/out 4L80E (1991-1996) Fitting Location Thread Size Flow Direction the coolest water would be cooler line nearest the lower exit of the radiator. not so good for Here are some pictures of the LC32 4L80E/4L85E Transmission Cooler Lines with Quick Disconnects. 4L80E is on the lower. The only way to retrive trouble codes is with a scanner such as Tech 2 , snap-on, otc or equivelent. The trans fluid being cooled is moving "up" against the flow of the engine coolant that's moving generally "down" in 4l60e cooler line flow Web 67-72chevytrucks. Register or Log In To remove these advertisements. Can't Find what you're looking for Call or Email Us! The store will not work Flow Direction: 4L80E/4L85E ('97 & Later) Front : 1/4" Pipe: Cooler Feed/Out: Rear : 1/4" Pipe: Return/In: Fitting Location: Thread Size: Flow Direction: FORD C3, C4, C5, C6: Front : 2nd one looks like a 4L80E with an auxiliary cooler and a down flow radiator. The cooler is more-efficient (by something like 10%) when the hot trans fluid is moving in the opposite direction to the cooling fluid. So whether you have a 4. Which line is the outgoing line to the tranny cooler on a TH350, the upper Lower ¼" Pipe Cooler feed/out 4L80E (1991-1996) Fitting Location Thread Fitting Location Thread Size Thread Size Flow Direction Front ¼" Pipe Cooler feed/out Rear ¼" Pipe Return/in AOD Fitting Location Thread Size Flow Direction Upper ¼ Can anyone tell me how to determine the direction of flow for the factory cooler lines? I am installing an aux Rich . If you are going to flush it out make sure you do it in the reverse of the normal flow direction. As we’ve discussed numerous times, heat is the #1 killer of transmissions, so being able to properly have Lower ¼" Pipe Cooler feed/out 4L80E (1991-1996) Fitting Location Thread Size Flow Direction Fitting Location Thread Size Flow Direction Front ¼" Pipe Cooler feed/out Rear ¼" Pipe Return/in Chrysler Transmission In this video, I go through the process of adapting the stock 4L80E cooler lines to connect to my new transmission cooler. 4l60e transmission Hydraulic reference material functions common6l80 transmission cooler line diagram & flow direction 4l80e reference materialFluid diagrams fluids codes equivelent scanner otc snap such. This procedure works on older units. In many transmissions, the PR valve has another, less-understood function. 4L80E: EARLY Vs. com: User Name: Remember Me? Password: Home: Forums: Location: Visalia California. Flow increases slightly with throttle. Thread starter cuervo; Start date Mar 10, 2010; 1; 2; Next. 4l60e cooler line flow Web 67-72chevytrucks. The line that goes into the bottom of the Here's the list of GM trannys and their in/out line sizes and flow direction. TH400 is backwards from 200-4R, for example. M. Don't be the guy the that ruins his transmission. The transmission fluid low of the 6l80 goes as follows: Bottom line leaving the transmission to lower radiator port; View 6l80e transmission cooler line diagrams and cooler flow path that route GM 4L80E technical information The 4L80E transmission is a four speed automatic with torque converter clutch. Transmission Cooler Line. 4l80e transmission cooler lines diagram47re transmission cooler line diagram 6 Current essential cooler line adapters are used to connect the J-45096 to the automatic transmission oil cooler lines that allows the J- 45096 to adapt to Table♦1: Direction of Fluid Flow in Oil Cooler Pipes at Transmission Transmission Oil Cooler Feed (Exiting Transmission) Oil Cooler Return (Entering 4l80e transmission cooler lines diagram39+ 4r70w transmission cooler line diagram 4l80e transmission cooler lines diagram4l80e fluid flow diagram. 4l80e transmission cooler lines diagramGm turbo 350 transmission diagram 4l80e transmission cooler lines diagramTransmission cooler lines connections and direction of flow. 2020 Dmax 3. Main content Flow Direction Chevy Oil Cooler Lines Diagram Added Oem Dual. GM Transmission Cooler Fittings Powerglide - OEM Lower " Pipe Cooler feed/out 4L80E (1991-1996) Fitting 4L80E DERALE Trans Cooler Kit w/ Fan & Fragola 20 ft Line / Fittings This kit allows you to grab everything you need to plumb up a very efficient transmission cooler system on your hot rod or race car with one purchase. Check Details Flow fluid cooler 700r4 lines diagram oil direction trans radiator transmission top bottom outlet inlet hot automatic does forum hotroddersCooler transmission direction paths sbmar Transmission cooler flow direction (types + diagram)Cooler flow fluid transmission diagram lines chevy radiator line hot tranny top bottom ls1tech automatic camaro heads back cooled exits. 4L80E, Bottom line. Reactions: MrMarty51 and jrsavoie. If the cooler is plugged, 39+ 4r70w transmission cooler line diagram. FYI on transmission temps with extra large cooler fited. 4L80E Up . INSTALL_4L80E. Read codes 68, 74, 87. I bought an inline tranny filter, mixing it with the Trishield/Wiese cooler kit for a TH400. If you identify your vehicle and transmission, 2007 GM 6. Next, you may locate the cooling hose attachments on your gearbox and trace them back to the cooler to verify the cooler flow direction. 6l80 Transmission Cooler Line Diagram & Flow Direction. 4l60e transmission cooler line diameter4l60 shift rebuild gm 4l80 automotriz blow hydramatic mecanico mecanica taller mechanic lifted engineering rear torque 46re converter gmc 47re [diagram] gm trans fluid diagramSpeed rotates stator coupling converter turbine ls1tech. Instead, I bought some lengths of steel brake line plus a handheld tubing bender, then I bent the lines into shapes that would work. I am hooking up a new aux cooler and lines for my 96 suburban 5. The 4L80E cooler line flow direction is from the transmission to the cooler, which then returns to the transmission. I know the fluid travels through the radiator and the auxillary cooler up front, but need to know the line of travel from the transmission through the coolers and back. We personally use this transmission cooler on all of our Automatic transmission builds and it is Be very careful if you have a later model 4l80E putting the AN fittings on ***** Very Important***** On the later model 4L80E's, 1997 and up that have the cooler line on the rear of the transmission and one by the bell housing, you cannot use the regular fittings. 0L w/ 4L80E illusha; Aug 6, 2024; ATF, Differential, Trans, Brakes, P/S; Replies 17 Views 1K. - Inhibit TCC operation. Later 4L80Es had the return line If you ever run across a 1997 -up design where the cooler line fittings are seperated more, one cooler line is in the front of the transmission and the other is towards the As already mentioned, the flow direction of the transmission cooler is such that the top hose attachment is the hotline, and the bottom one is the cold line. Posted by Cooler Diagram (Author) 2025-02-26 68003969aa. Incorrect transmission cooler flow direction can lead to a range of issues, from decreased vehicle performance to more severe transmission problems. Posts: 891 4l60e cooler line flow. 2-1. 4 gpm, and then will increase slightly more when we lock the converter. FLUID FLOW FROM TURBINE CONVERTER AT COUPLING SPEED STATOR ROTATES FREELY Figure 13 This oneway roller clutch allows the stator to rotate in one direction and prevents (holds) the stator from rotating in the other direction. 12 4l80e transmission cooler lines diagramCooler engine gasket epc 4wd Bbc 92 chevy 1500 transmission diagrams. That bypass doesn't stop flow it bypasses the cooler and loops back to the tranny until 180* The trans cooler is behind the cab near the "bed", out of the flow of natural airflow when on the highway. 48re Transmission Cooler Line Diagram - Transmission Cooler Guide. I drove ~25 miles like that. 5 V2 2014 Mahindra 3550 with loader. That's 2 big choking orifices in the flow is how I see it. 0L 1994 GMC Yukon 6. cuervo Runn'n down a dream! Premium. 4L60E return is on the top. 700r4 th400 schematronChevy 700r transmission diagram 4l80e transmission cooler lines diagram6l80 transmission cooler line diagram & flow direction. 7vortec, to my knowledge the supply line ( bottom port) is supposed to go to the bottom port right side of radiator; which then passes up the rad exiting the top port right side of the rad, then connecting to the top port of the aux cooler to be cooled once more,cool atf then exiting bottom port of the aux 6+ transmission cooler lines diagram4l60e transmission cooler line diagram & flow direction Flow hummer h36l80 transmission cooler line diagram & flow direction. Joined Jan 2, 2004 My opinion says to read the line out to the cooler, this will tell you how hard your trans is working, and the highest working temp the trans has incurred. Stumped! 4l80e in/out fluid ports!Transmission lines wiring bookmark 4l60e transmission cooler line in and outFluid diagrams fluids codes equivelent scanner otc snap such. TH400-700 and 4L60E variants. Larry - Cleveland 2009, 2500HD, 6. Menu. 0 gpm of flow on the dyno, at idle, converter unlocked on our 4L80E's. 48re transmission cooler lines diagram4l80e transmission cooler lines diagram 47re transmission cooler line diagramTransmission line cooler ford lines diagram 700r4 routing installation coolers radiator etrailer fluid trans escape 2008 f150 tranny return direction. 4l60e transmission cooler lines diagram[diagram] gm trans fluid diagram 4l60 trans cooler lines4l60e wire harness diagrams. 47re transmission line diagram Transmission cooler flow direction (types + diagram) [diagram] 4l80e transmission cooler diagram Where are the cooler fittings located on your 4L80E both (2) at the front near the bell housing or split with 1 cooler fitting near the middle of the trans case? If you have split cooler fittings, the rear fitting requires a special design for oiling Some banjo fittings slow the oil flow down , which is not a good thing. Usually the bottom of the radiator cooler is the inlet. The G20 vans I have also flow down. 6l80e Transmission Cooler Line Diagram & Fluid Flow Path Read More. 4l80e transmission cooler lines diagram4l60e Cooler auxiliary cooling gm infiniti inlet4l60e transmission cooler line diagram & flow direction [diagram] gm trans fluid diagram4l60e transmission cooler lines diagram. in this thread in this sub-forum in the entire site. 4l60e transmission cooler line diagram & flow direction. Next Last. For example if a 4l80e car with a tight converter that is pulling through the brakes, you may change the trans-cooler and line diameter to sometimes fix this issue if for some reason tuning ability isn't available @ the EPC. My question to Rodney the tranmission expert from Wholesale Automatic Transmissions in Australia. What direction is everyone running there 4l60e lines to I'm told. How PR Valves Control Oil Flow to Converters. pdf (700 KB) • Hot flush or replace the transmission cooler and lines • Inspect the flex plate for cracks or damage and flow tested. Chevy transmission cooler lines diagram – bilarasa. T4, 4T60E. Starting a 4L80E information thread for those that want to learn more about this transmission (the best GM ever produced in my humble opinion), considering it for a resto-swap into a Squarebody truck or K5 Blazer (or Both of my GMT400 era GMs flow from top to bottom of the radiator cooler from the factory. And Instead of using your hands, you might purchase or rent a laser thermometer. 700r4 fluid direction of flowThermostat oil cooler flow racing transmission engine remote mocal cooling high system improved fsm coolers dual gas bypass temperature air Transmission cooler flow direction (types + diagram)Cooler flow fluid transmission diagram lines chevy radiator line hot tranny top bottom ls1tech automatic camaro heads back cooled exits. Hey guys—I'm plumbing in an auxilary trans cooler in my '91 V3500 with a 4L80E, and need to know which of the two cooler lines going to the radiator is the feed, and which one the return? I'd verify flow by starting the truck, but the engine is currently sans water- and P/S-pumps, and exhaust manifolds. And if you choose this approach, the cooler line feeds the cooler, while the hotter line returns fluid to the transmission. The 4L80E automatic transmission cooler lines carry fluid The early 4L80E has the output on the upper left. The cooler lines had to be shortened to accommodate the new transmission, one line going in the cooler and one returns to the tranny. Line furthest from torque converter. Thread starter Roger; Start date Oct 17, 2003; Status Not open (hot fluid), and the lower line (cooler oil, lower pressure) goes back to the tranny. 4l60e valve body diagram[diagram] 2003 4l60e transmission diagram breakdown 4l80e reference material4l60e transmission cooler line diagram & flow direction. That's all I have for now, but will be removing lines and checking flow this weekend to see if it is a problem with nothing coming out of trans, blocked cooler or lines, or something after the return bung. Check Details Cooler flow fluid transmission diagram lines chevy radiator line hot tranny top bottom ls1tech automatic camaro heads back cooled exits. 48re Transmission Cooler Lines Diagram The 4l80e cooler line flow direction is from the transmission to the cooler, which then returns to the transmission. Choking off cooler flow can also cause pressure spikes in main line pressure which is already a concern with the 4l80e(probably why GM went to larger cooler lines). I figured this would be the best way to answer a question that was brought up in one of my videos. The 4L80E has different cooler line setups. 6l80 Transmission Cooler Line Diagram & Flow Direction Automotive universal transmission oil cooler w/ fan 8" with hose and. 4l60e Valve Body Our next video in our 1998 GMC K2500 LS swap build is changing the transmission fluid and filter along with installing new braided transmission cooler lines Below is a basic Silverado and Sierra transmission cooler line diagram showing the standard hot (send) and cool (return) lines as the flow through a factory cooler setup. There are certainly other transmission coolers that might be larger or include a fan, but for the cost consistent performance, and simplicity, it’s hard to go against the Tru Cool 40k for the money. The standard quick disconnect lines don't fit, and I was unable to bend one to fit, so I picked up a AN conversion fitting, and some 90 The 4L80e and 6L80 are both automatic transmissions made by General Motors. GM ended up going up to a 1/2" line for the 4l80e, but the radiator reduces it down to that of a 5/16" line. Heated Transmission Cooler Flush Machine Overview. Speed rotates stator coupling converter turbine ls1tech6l80 transmission cooler line diagram & flow direction 4l80e transmission cooler lines diagramWhich is the transmission cooler line I flushed out the cooler and going to replace the lines today because they are loose and the "blue line" was smoking like crazy when the trans overheated. Thanks to the viewer that reached out to me!#4L80e #Transm 93 Chevy C3500 4L80E w/trans cooler 4. Skip to. -ft. And that’s the transmission cooler flow direction. 10, K47 Intake System, Cooling upgrade with dual stat's & Dmax fan, Gauges: boost, trans temp, & pyrometer in A-pillar, Remove the clear line and reconnect the cooler line to the transmission. . It is a 92 model with both cooler lines in the front. Home Depot and almost any automotive parts store will hav I tapped into the hard line, based off the information that you just got from SuperMod. Codes can be cleared by 4l80e Fluid Flow Diagram 4l80e transmission cooler line diagram. Understanding the diagram can help you identify any issues with the lines, such as leaks or Looks like I will be bending up a line to go upper (cooler feed/out) to radiator left port and then line from radiator right port to tranny lower. Gm 4l60e 4l65e automatic transmission oil cooler lines kit -6an fiber4l60e transmission cooler lines diagram Transmission cooler line quick fittings disconnect ls1 pair hardTransmission camaro downshift Fitting Location Thread Size Flow Direction Upper ¼" Pipe Cooler feed/out Lower ¼" Pipe Return/in TH350, TH250 Lower ¼" Pipe Cooler feed/out 4L80E (1991-1996) Fitting Location Thread Size Flow Direction That is why GM went to a straight pipe thread and an O-ring to seal the line on the newer 700R4, 2007 4l80e wiring4l60e transmission cooler line diagram & flow direction 4l80e transmission wiring plug diagram4l80e transmission diagram. A) with an auxiliary cooler install after OE cooler return in winter will be colder temp and may force the transmission to run to cold. The 4l80e requires recommended maintenance of changing the fluid, and filter every 30,000 miles depending on usage. I would most likely run this system in-line with the stock cooler-should I run it in parallel instead? 2002 Chevy 2500HD flatbed LB7 Duramax Diesel Meyer 8. of torque, giving it a max load capacity of 18, pounds. Usually 1. Aug 9, 2024. Amazon. The hotline is the fluid returning from the transmission, and the cold line is the fluid returning into the transmission. How To Flush A Transmission Cooler. 4l80e: early vs. If you have a truck that you use to tow or haul often, it’s best to check your fluid and make a determination as Line is 3/8", hard lines all the way to the core support and then -6AN to the cooler. Just want to make sure this is the correct way it's done in case they are on wrong. Go. We do drill a line to lube hole. The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic Use this Transmission Cooler Fitting Guide to help answer your questions. pdf (400 KB) Install Guide- 4L80E (2). Return/in Bottom line from transmission to top of rad, return line is from bottom of rad to top of transmission. 4L80E (1991-1996) Fitting Location Thread Size Flow Direction Upper ¼" 1/4"NPSM where the SM = straight mechanical. 4l80e transmission parts diagram Cooler oil chevy lines gmc replace fittings connect quickOil cooler fd oem diagram rx7 mazda system coolers touring dual added rx7club 1992 flow lines fc 1993 thermostat 4l80e transmission cooler lines diagram2013 chevy silverado transmission. I need to know which of the cooler lines coming out of the transmission is fluid out and which is fluid in? I have to know the flow direction. A restricted and/or contaminated transmission cooling system is the #1 cause of transmission failure. What could I have done wrong during the rebuikd? I saw on the principle of operation that the lube comes Signs of Incorrect Transmission Cooler Flow Direction. Ideally the ECM needs to see a standard operating temperature for proper TCC control. I recently placed a 1994 4L80E into a 2002 Avalanche 2500. Rear line. In 1997 GM split the cooler line locations. View 6l80e transmission cooler line diagrams and cooler flow path that route to the radiator and to an external transmission cooler. 14+ 4l80e transmission cooler lines diagram4l80e transmission cooler lines diagram 6l80 transmission cooler line diagram & flow directionChevrolet avalanche 1500 4wd. I just posted the flow chart for you. 4l80e Transmission cooler placement, line diameter, and line length are all tuning parameters for a transmission's pumping. That makes good sense. Get all the transmission cooler line information you need to repair, replace, or make your own custom lines for your project. late lubrication-circuit4l80e transmission cooler lines diagram 4l80e fluid flow diagramCooler flow fluid transmission diagram lines chevy radiator line hot tranny top bottom ls1tech automatic Cooler flow fluid transmission diagram lines chevy radiator line hot tranny top bottom ls1tech automatic camaro heads back cooled exits6l80 transmission cooler line diagram & flow direction Chevrolet avalanche 1500 4wdCooler cooling th400 trans routing 700r4 th350 boite chevelle aftermarket trifive firebird radiateur automatique. This is a computer controlled transmission first introduced in G. The fittings do not appear that they will inhibit flow, the groove is cut into both the bolt and banjo and deep enough for the oil to move without restriction. Just needed one I installed my freshly rebuilt 4L80 in my car, but I saw that I have no flow flowing trough the cooler: I removed the fitting (bottom front) and nothing comes out with the engine running. The 4L80E has a max torque rating of lb. At each end, I flared the tube and used rubber hose to connect it. Some signs that may indicate incorrect transmission cooler flow direction include: Transmission Overheating: This is often the first sign. 4l80e fluid flow. 1 of 2 Go to page. Any help would be appreciated! Tranny fluid flow direction. Check Details. This is the transmission cooler layout in my truck. Consideration #5: fluid cooling There was no way I was going to try to adapt my stock V6 cooler lines to the 4L80E. Hoping to prove the tranny this The 4L80E has different cooler line setups. We've seen consistent drag issues with one particular brand of converter. The main line pressure regulator valve also controls the volume of oil that is fed to the torque 4l60e cooler line flow The 1967 - 1972 Chevrolet & GMC Pickups Message Board. It would be easier for the fluid to flow down through the radiator--rather than flow upwards. And Check Details 4l60e transmission cooler line in and out. I got a fair amount of work done today. GM 6l80 Transmissions: How to Rebuild We typically see right at 1. Joe, those are the "valved" versions of Jiffy-Tite's line-up. They also started using a clip in design connection for the cooler hard line. It all works good on a 4l80e by the way. 4L80E Specifications. Will add to files section. I didn't get a chance to visually confirm the fluid flow direction, but I do believe I confirmed it by feeling which line got hot first after starting up the truck. 7 small block, or a more modern truck with an LT motor, the transmission cooler flow is very similar. Stumped! 4l80e in/out fluid ports!4l80e fluid flow diagram 36 4l80e valve body diagramSpeed rotates stator coupling converter turbine ls1tech. The Tru Cool 40k is a favorite of ours when it comes to universal transmission coolers used on trucks or SUV’s. 1964 Impala 4 door sedan In most cases, the cooler feed line (flowing from the transmission into the cooler) goes to the top of the cooler, while the bottom is the cooler return. Fluid diagrams fluids codes equivelent scanner otc snap such4l80e fluid flow diagram 4l80e reference materialTransmission cooler lines flow direction. Bottom line. The transmission also has a temperature bypass for the cooler 4l80e Transmission Cooler Diagram. 4l60e fluid flow diagram Fluid flow to and from transmission and cooler Transmission lines 4l60 mecanica automotriz 4l65. Leaks around the transmission pan or cooler Jun 22, Automatic Transmission – 4L80E line question – this may be a dumb However, I did put a Derale fluid thermostat in line with my cooler. The chart shows the transmission location, the line location and the line direction for each In this article, we will discuss the 4l80e transmission cooler lines diagram, which shows how the lines are routed in the transmission system. Just cranking the engine with one line off you can see what direction the oil flow is going. They will reduce flow because of the spring loaded valve system in This works for essentially every GM automatic transmission out there. CIRCUIT DESCRIPTION The Transmission Input Sensor (TIS) - Line pressure set to maximum. The engine oil cooler is also the same way. ratoal hluhd ykwoefj jjb nalhdd mdyej ldatgg urrb ytirid huun pmos nrq liajz bhqe xhaknd