Component slipping). To be quite honest, the trans looks great inside the pan. This will fix the 2-3 lag or no shift that causes the 3-4 clutch burn up. The speedometer stays at 0 all the time. When you shift your car into drive, neutral, or reverse, if you’re hearing loud clunking noises, it’s possible the torque converter is the root of the trouble. the cold fluid is thicker (less viscous?) and the bad pump can still make some pressure with it. The PWM solenoid is directly under the lock up solenoid which extends upward into the pump. Modify TCC lockup speeds for performance or towing. I have a problem with my 4L80E in my 91 camaro rs. Precision International is pleased to bring to you another tech tip to help you at the work bench! In this edition, Precision's own tech advisor John Parmenter gives an assessment on the loss of. This is usually 2nd gear, which is why your car feels sluggish on takeoff and the rpms will be higher than normal at speeds above 25 mph. 4l80e transmission shifting problem, very hard shifting after… 4l80e transmission shifting problem, very 4l80e transmission shifting problem, very hard shifting after exteneded periods of driving. 4L80E Streetfighter build at TCI - In. There is no IAC, just the BAU. But when it goes into 3rd it won't shift at 2000 it climbs to 2500 and jerks hard, if I let off the gas and let the rpms drop it dosent jerk as bad. Drop the pan, you will need to cut and splice wiring in the pan on the valve body. A 4L80E doesn't use a 3-2 downshift solenoid like a 60 does and there are two other wires that have to be re-pinned to convert from a 4L60E to a 4L80E but I would have to look at my notes in the shop to remember which two they are and what they control. They all seem to point to electrical problems. Speedometer doesn't work and transmission doesn't shift gears. If I shut the motor off it will "reset" and work for a bit until it slips again, then no overdrive. - Heavy Duty level produces a solid, noticeably firm shift when compared to the stock shift feel. On a Ford and I use that because its what I know and most work the same way. I have a 2000 chevy crewcab 4x4 3/4 ton old body style. Does anyone tow with a GM 4L80E or 4L85E auto? I have a 95 K2500 6. Trouble Shooting a Faulty Shift Solenoid In Your 4L80E Automatic Transmission. The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain: 4L80E & TH400 Tech. (It stayed in the OFF mode the longest and the BALL ran around it's enclosed cage and BEAT the ball seat EGG Shaped. towing with a 4l80e hey guys, ive got a few questions about towing back in the day, i had a 88 k1500 with the 700R4 , doing some light to medium towing and hauling, id say no more than 6k. I have taking the truck to a shop at the beginning of the season for hot towing concerns and given a clean bill of health. When sitting outside in the cold, the tranny won't shift at all. I had the tranny replaced 12 years ago by an independent GMC guy and he put in a GMC rebuild. Forum Tools. What goes on inside is a mystery to most. Also includes links to relevant forum topics on the code. Chevy Silverado and GMC Sierra Transmission Problems. mine was a built tranny and shifted really hard. Chevy Silverado 2500 transmission problems aren't cheap to fix, so you might be tempted to just buy a used 4L80E transmission or a used 6L90 transmission from a junk yard. Available on this page is a top quality, SFI specification 4. After that is set code 81 and will go into limp mode. I put in the oil, and did get some forward movement from her, but oil is starting to look brown. i told him what happened, he said no problem, got it taken care of and i had my parts 2 days later. So I changed both shift Solenoids and changed the fluid in the pan, but no change any advise about what might be going on or how to fix would be greatly appreciated. Shifts into second, then doesn't shift up any further. He said those torque convertors are pretty tough on the 4L80E and he has did alot of Sonnex transmission shift correction kits on the valve bodies with success. The most recently reported issues are listed below. The shift solenoids and the 3-2 are the ones that would be suspect if any. One AcDelco TCC PWM. The worst complaints are transmission failure, slips on acceleration, and clanking noise when shifting. Last night my 4L80e lost overdrive with absolutely no warning. To help save your second gear clutch, accelerate firmly in first gear to 17 MPH, and then back off the gas pedal nearly all the way to allow a low engine torque shift into 2nd gear. 1st gear shifted too soon, and when 2nd gear came along, the engine felt like it was wheezing just to twist through 2nd. It can be a learend stratigy also, when the trans starts to fail it might learn to add more pressure to lock a gear up or shift timing change. So I've found a few posts here, and I have a detailed Idea of whats causing my no overdrive problem. Pump wear & low or no cooler flow. In addition to the TCI 4L80E being a lot beefier than TH350, it has been prepped with valve body modifications that increased its cooling ability and improved shift characteristics. This keeps the engine at higher rpm's allowing for a quicker warm-up. Seems sluggish and throws code P0756. You hop into your car, turn the ignition key, shift to 'Drive' or 'Reverse', and there is a seemingly long delay before the transmission engages. I know this wont help much, but there was an issue with certain gm trucks and what I think is a pressure switch (maybe a sensor) on the side of the transmission. So we are replacing the tcc, the pressure control, 2-3 shift, temp sensor, cleaning the valve body and checking the valve for 4th gear which can stick or the hole can even warp. So I changed both shift Solenoids and changed the fluid in the pan, but no change any advise about what might be going on or how to fix would be greatly appreciated. It did this, I was only able to go about 30mph until I came to a place I could pull over. Premium or regular octane programming. Here is a list of what I did to the trans. I drove it around town for about a week, I hit a real big bump in the road(i didnt bottom out) and every since then it will shift in every gear but 4th with. The stock 700R4 has low shift points because it typically came with a TPI motor that runs out of steam at 4500 rpm. It determines which gears are enabled or disabled. The dealer has 3 shift solenoids indicated, all with the same part number, but there are only 2 solenoids for basic gear shifting. The dealer said the autotrans fluid is "burnt. vacuum diaphragms or solenoids to shift the unit or engage and disengage the front differential. This one's electrical related and you may need to change out the solenoid while you are in the pan changing the filter. On a Ford and I use that because its what I know and most work the same way. Slowly screw the switch in until the light goes out. this is nice for grocery shopping or PTA car-pooling. Automatic Transmission Design Vehicle Service & Repair Center. I drive a manual, and most of my driving is by feel. So this TH200-4R does everything the 400 did, and it keeps us on the fuel-friendly side of 3,000 rpm at any (legal) freeway speed. I swaped TQ converters and controllers and when I took it down the road today for the first time in a long time it doesn't shift. They all seem to point to electrical problems. So its throwing the 2-3 solenoid and tcc codes because when the fluid is hot it can't create enough pressure and thus can't stay in torque or 4th. 6357 Toll Free Customer Service: 866. Tip 3: Removing the shift solenoids should be done with a completely cooled vehicle. The locking dip stick has a lever that is moved up or down to open and close it. No communication between TCM and hp tuners. Shift then give it more gas seems nit to have power when taking off like i said only when the car is hot it does nit over heat. 2-3 cutloose and burned plates. 1982-2000 C/K Truck & SUV Chassis & Drivetrain Discussion Forum for the 1982-2000 GM Pickup Trucks and SUVs, and their Transmissions & Drivetrains, cab, chassis, electrical systems and a lot more. 0) as well if you decide to go with l92 heads. 1993 4L80E won't shift to 4th. Bought it w/ a bad trans. Why doesn't my 1988 Honda transmission shift when hot is it the solenoid? The 3/4 Tons MUST have the 4L80E put in it. All automatic transmission systems have a valve body which serves as the "brain" of the transmission. do not go to 0 on shift times with the early models of the 60e as i would see clutch bind. Shift solenoid malfunctions can be the result of a variety of both mechanical and electrical faults. So I changed both shift Solenoids and changed the fluid in the pan, but no change any advise about what might be going on or how to fix would be greatly appreciated. I swaped TQ converters and controllers and when I took it down the road today for the first time in a long time it doesn't shift. Has 190000 miles. For those of you who like the idea of manually shifting your 4L80E, the multiple shift mode includes a full manual mode for using bump or paddle-type shifters, like the one's available on TCI's web site. won’t hold up to severe abuse, such as would be seen behind a nitrous’d big-block, for example. Just cruising along at about 50mph. Won't shift out of first gear. Do not confuse a slipping transmission with a solenoid problem. Learn how to tune GM's 4L60E / 4L65E transmission using HP Tuners to get the drivability and gear shifting that you want and that suits your driving style. I have taking the truck to a shop at the beginning of the season for hot towing concerns and given a clean bill of health. However, they also give an AODE/4R70W greater longevity because they reduce and even eliminate slippage, allowing clutches and bands to engage with a minimum of deterioration. If the tester lights, you have 12 volts to terminal A at the transmission. 11 rear axle gears on the highway. you will loose minimal oil. To help save your second gear clutch, accelerate firmly in first gear to 17 MPH, and then back off the gas pedal nearly all the way to allow a low engine torque shift into 2nd gear. Generally speaking, a 700R4/4L60E transmission will fit most applications that originally contained a TH350/TH400," concurs Winstead, adding,"The 4L80E will not require many modifications in early A-body and F. The only thing the EBL brings to the table at the moment is WBO2 logging as unfortunately the EBL won't control a 4L60E or 4L80E. There were some writeups on this site on how the swap went, but nothing went too deep into the crossmember and transfer case support. Why doesn't my 1988 Honda transmission shift when hot is it the solenoid? The 3/4 Tons MUST have the 4L80E put in it. Replace Shift Solenoid A & B in 1999 Chevy Suburban 5. I swaped TQ converters and controllers and when I took it down the road today for the first time in a long time it doesn't shift. It should shift into each gear smoothly and without any grinding or crunching. If the cable is broken, the tranmission's performance won't be as good because it won't respond so quickly to sudden changes of the accelerator. 1-2 Shift shudder at WOT (Wide Open Throttle); delayed or abnormal 1-2 shift; There’s a problem ONLY on the 1-2 shift: 1-2 accumulator piston cracked or stuck cocked in the bore. Precision International is pleased to bring to you another tech tip to help you at the work bench! In this edition, Precision's own tech advisor John Parmenter gives an assessment on the loss of. I have figured out why and which RPMs to be at to effectively control the TQ. I'm getting a transmission flush Sunday do you think that could fix it or is it something more difficult?. In some cases, specific gears may simply refuse to engage. Lockup TCC Wiring. The gearing to move such a heavy load is a 2. Low line pressure—Total Burnup. Transmission fluid gets hot and remains hot long after the vehicle has been turned off. 700R4 won't shift out of first. Impala won't shift after it gets warm Complete Transmission Repair Cost Guide › Transmission Forum – Ask an Expert › Chevrolet › Impala won't shift after it gets warm This topic contains 3 replies, has 2 voices, and was last updated by Hostgator 3 years, 11 months ago. Electronic Push Button Paddle Shifter shifting system provides an accurate, fast, simple, and safe means to control your automatic performance transmission. A4 4l60e Trans won't shift out of 1st gear. 2000 Chevy Silverado Trans Won't Shift When Hot Transmission Problem 2000 Chevy Silverado V8 Four Wheel Drive Automatic I Have A Silverado 6 Litre Diesel That Had An Alison Auto Gear Asked by Noel Begley ·. Since the xmission is obviously cold, the level should be between the two circles near the bottom (just a sanity check). 2-3 cutloose and burned plates. Contributed By: Mark Wallace Preliminary thoughts: 1. If you look up the RPO code (located in the glove box, spare tire or the glove compartment) you can identify if the correct transmission is in the vehicle. The Powertrain Control Module controls engine and transmission function by way of a programmatically adaptive microprocessor. Shipping World Wide! Running damaged or worn out Automatic Transmission is dangerous and may cost you big money. The purpose of this article is to help you identify 4L60E shift solenoid symptoms. will not shift into 3rd just slips. I have rebuilt around 20 th350, th400, and 700r4 trannys, and 1 4l80e before this one. It used to spill fluid out the dip stick onto the engine until GM put a locking/leak proof dip stick on it. If normal effort does not move the shifter from the park position, pulling with more force will not help and will likely break something. When driving it jerks ever so slightly into 2nd and jerks hard going into 3rd if I even give it any excess acceleration. The trip hasn't been great so far. The web age is now on top the users of the web is increasing with every day and as a result the users of the social media are also increasing. Replace the bottom drain plug. it normally shifts about 2000 rpms. This kit does not change or modify shift point RPM in any range. In some cases, specific gears may simply refuse to engage. Might be the cause, might not. 26393B E40D 4R100 Transmission solenoid (new) assembly 8/94-1999 E4OD 4R100 transmission solenoid, Non PWM applications. First impression: This is a split-personality gearbox--the shifts are nice and comfy at part throttle, but at WOT, the engine shoots to 5,400 rpm and kicks the car sideways on the 1-2 shift. If I start it and then pull the fuse it dies. The only thing the EBL brings to the table at the moment is WBO2 logging as unfortunately the EBL won't control a 4L60E or 4L80E. Any suggestions. Also, if the accumulator housing walls are scored, the housing must be replaced. My transmission in my 1993 motorhome with a Chevy 4L80E (only 7000 miles on motorhome) will not shift into 3rd gear. The filter was pretty clogged, but there wasn't any metal in the pan, and the fluid wasn't burned. Lockup TCC Wiring. I have a 1990 acura ledgen the tranny will slip when its seems to be hot out and drive it for a distance i can get up to 30 mph then have to let iff the gas for it to. Now, although in this article I won't be showing you how to tear down your transmission, it will help you to find out if your electronically controlled 4L60-E transmission issue is due to a malfunctioning shift solenoid/sensor or internal damage. These solenoids are typically used to regulate a valve body, or to control clutch packs in a more direct manner. My linkage is correct and I have Park, Reverse, and Neutral, but when I go to Drive, 2, or 1, it wont shift out of first gear. In my case the problem spot was the pesky 700r4, I never liked the unit from the start. Some of does contain acid and it will eat away some of the coils if left on very long. It is also the switch that controls the harshness of the shift. when it gets warm and the fluid is thinner the pump can't hack it. That wiring diagram is the same one that I have, only mine has highlighter marks all over it. Might be the cause, might not. So yes, they are tough but when someone is TRYING to kill them, they don't have a chance. 4L60E/4L80E does not have a thermostat; The problem could be that the TFT sensor (located in the pressure switch block inside the bottom of the trans. Do not confuse a slipping transmission with a solenoid problem. The B sol had the Highest failures. If so, there is a good chance that the vehicle is in "limp mode or fail safe". Won't shift out of low gear. The 4L60-E is an automatic shift, four-speed overdrive, longitudinally positioned transmission. On a hill it will kick out of OD, it will not shift back to OD when the road levels out. The solenoids are simply too cheap to skimp on, the harnesses are usually hardened. Shipping World Wide! Running damaged or worn out Automatic Transmission is dangerous and may cost you big money. 7 liter gas engine or the 6. Shift indicator included. I have a 95 talon tsi awd auto and its stock with 91k on it. My removal of the shift lever was done by lifting up on it until I would insert 3 open end wrenches around the shift rod (I used a 15mm, 16mm, & 5/8") This held the shift selector lever up so the shift rod could be pushed out of it. Shift then give it more gas seems nit to have power when taking off like i said only when the car is hot it does nit over heat. I drive a manual, and most of my driving is by feel. He said those torque convertors are pretty tough on the 4L80E and he has did alot of Sonnex transmission shift correction kits on the valve bodies with success. 48 second, 1. Last edited by Taxmanth; 02-26-2019 at 08:45 AM. intermittent problems are a pain to diagnose but id still check again for hard codes with a GM TECH 2 before i did anything else. I searched on the internet and came across various forums. Im not trying to sound like a jerk here, but you're a "tranny man" and cant figure out why the trans wont shift into fourth? Diag it just like any other vehicle with a 4l80e, they will still need the same signals to shift regardless what engine they're behind. 4L80E Transmission Problems: Bob: 9-27-07 : I have a 1995 GMC 2500 4x4 with 155K. Actually it never made it to 4th until the next morning when it had a chance to cool down. The locking dip stick has a lever that is moved up or down to open and close it. Ive changed the solenoids, fluid and filter and even added lucas antislip. 0 liter gas engines after model year 2000 trucks. Shop says it needs to be rebuilt. Common Problems with the Chevy Express 2500 / 3500 4L80E (Up to 2009) 1) Slipping or No Gear Engagement If you hit the gas and your van slips between the gears, refuses to shift, or it doesn't go anywhere at all, then you may have a failed 4L80E shift solenoid. An ignition switch that goes bad can cause a false shift solenoid code that comes up on a scanner. Because of this, we do not provide a wiring harness for it. Make a note of what you were doing, where you are, what's happening (noises, etc. 72 Answers. Use teflon pipe sealer. Is it terminal? Also, I found a low milage used 4l80e trans from a 1995 3500 w/ a 7. 4L80E 1991-2006. If the tester does not light, then check for 12 volts by the regular method. If the fuse blows it goes into "limp home" mode, typically third gear, sometimes second, and stays there so you can drive it to a garage where they will charge $1600 minimum to rebuild it. 26393B E40D 4R100 Transmission solenoid (new) assembly 8/94-1999 E4OD 4R100 transmission solenoid, Non PWM applications. it WILL shift but only after you reach about 45. I have just about the same problem on my '93 3500. I have had the truck at transmission shops and they can't find the problem. this is a computer. Twin Automotive & Transmission, Charlotte's Transmission Specialist, provides free transmission repair diagnostics (diagnostic is free with repair of the transmission). If one or more solenoids are bad, you may lose the use of one or more gears, and may even be stuck in one particular gear or unable to shift into any gear at all. GM's TCU, computer software and wiring harness enable the transmission to operate. Your programmer will likely start with a "van file" since the 6. if happens on replacement unit right away may be debris from your cooler got in new unit. On way home from a trip the transmission would not shift into 4th gear (overdrive). 4L80E is an electronically controlled transmission with shift solenoids. 4l80e 4th gear and tcc problem (running from 4L60E segment) If this is your first visit, be sure to check out the FAQ by clicking the link above. PCS transmission controllers support more transmissions than any other controller on the market. Your car's automatic transmission system is one of several hydraulic systems in your car. When it stays in 4 it will shift, and will stay in gear when it indicates -5, but if I come to a stop it won't come out of first gear them There's a red indicater that's says SEL SELECT in red. Does your transmission not shift, feel sluggish on takeoff and will not reach higher speeds? This will usually be accompanied by a check engine light, transmission light or odd light flashing. Noticed that the torque converter wasn't locking up when this happens. I have checked the wiring, the soleniods will click when I ground them. Transmission whine FIXED!!!!! Well, for those of you who changed your transmission fluid and then developed the dreaded whining sucking whirring noise in 1st and 2nd gear, I've got GOOD NEWS. They all seem to point to electrical problems. train and the transmission was running hot. CHEV TURBO 350 T350 TRANSMISSION KICK DOWN CABLE BRAIDED STAINLESS STEEL HOT ROD. If that is the case in less than 50 miles the transmission filter will become plugged with torque converter clutch debris resulting in no transmission engaugement. When driving it jerks ever so slightly into 2nd and jerks hard going into 3rd if I even give it any excess acceleration. Upgrading from a 3-speed auto to an overdrive can transform any hot rod from a cool little street cruiser into an exhilarating speed demon, without losing any of its character. Most vehicles that were factory-equipped with the TH350 won't need any substantial modification to accept the overdrive 4L80E. code I was getting indicates Shift A Solenoid (electrical). Reduces the chance of 3-4 clutch failure INSTALLATION VIDEO 4L80E-HD2. 4th will only work if the 2-3 solenoid gets enough pressure. Could be that, also, the Pulse-Width-Modulated shift solenoids are sometimes bolted on from outside (that way they can be serviced without gutting the trans). The codes thrown were the tcc, the pressure control solenoid, and 2-3 shift. The shift solenoids are located at the rear of the valve body. Pump wear & low or no cooler flow. Yes, some of the problems I experienced could have been addressed with a shift kit, but that goes against my frugal nature. We took it on a trip to California beginning of June. Transmission fluid gets hot and remains hot long after the vehicle has been turned off. - Heavy Duty level produces a solid, noticeably firm shift when compared to the stock shift feel. It probably goes without saying, but if you put the vehicle into second gear manually, you'll still be able to get to where you need to go. It was hot going across the California desert, 115-118. I can definitely tell that doing this at higher Reverse speeds is A Bad Thing - but it's nice to know I can likely get by with 5 mph or so, just enough that lazy me doesn't have to stop completely. GM 4L60E Transmission Solenoid Kit Master Epc Shift Tcc Pwm 3-2 1996-02 74420AK. On way home from a trip the transmission would not shift into 4th gear (overdrive). Hard shift when hot. On a hill it will kick out of OD, it will not shift back to OD when the road levels out. Trouble-Shooting: Why Your Automatic Transmission Won't Shift Posted by Adam on Monday, October 13th, 2014 If your transmission doesn't shift, you may need to bring your car in for a look. 89 c2500 2wd 200,000 + miles, tranny wont go past 45 mph and sounds like it is struggling to move truck, sounds like somethinhg is turning hard, at times when starting out acts like it slips but then goes, fluid is ok, changed filter or screen and fluid last summer, was great for a few weeeks then acted up again, some days it is fine, not sure. Truck has 80K and transmission was serviced at 60K by GM dealer. In addition to the TCI 4L80E being a lot beefier than TH350, it has been prepped with valve body modifications that increased its cooling ability and improved shift characteristics. Transmission Control Module: TCM-Onboard Computer Did it ever occur to you that on cars built in the last 15 years develop engine repair problems or have a transmission failure because the TCM , transmission control module is the culprit?. 2004 Chevrolet Silverado transmission problems with 56 complaints from Silverado owners. What should I do? There was a plug on top of the transmission when I pulled it out of the 85 Ford, what does that do? I think i have a stuck shift valve. allows the 2-3 shift valve to travel through its normal range, even though we've blocked the 2-3 shuttle valve inward by the shim. The PWM solenoid is directly under the lock up solenoid which extends upward into the pump. If you put a conventional automatic transmission in "Park" you'll probably ruin the transmission. Thanks to the aftermarket, there are several cheap alternatives to an all-out drag transmission. 700R4 won't shift out of first. The reason is that the torque converter is hydraulic, so it gives you transmission some slack in order to let it shift, just as if you were pushing on a clutch. My motor turns on at 3500 rpm and I like to shift at 7000 rpm for first to second and 6500 rpm for second to third. Have changed shift solenoids,voltage at TPS idle. It will go into reverse with no trouble, but will not shift back to neutral or into a forward gear. I had the tranny replaced 12 years ago by an independent GMC guy and he put in a GMC rebuild. We also looked at the torque converter through the inspection port, and everything was. So pay attention and count the shifts or manually drop to third and see if it slips. What to do when your transmission is overheating: Stop driving immediately and let your transmission cool down. Save on Dorman - Help Shift Linkage Bushing Replacement 14055 at Advance Auto Parts. 8 Shift/Line (A/B) 9 Numeric sequence starting at 0001 @ 12:01 AM each day There will be times when a vehicle gets to your shop that someone else has worked on. If I start it and then pull the fuse it dies. Would need to take to a shop to you ck with a scanner (not a code reader) and watch computer to see if its commanding it to shift and hydraulicly wont or if theres an input like tps or mass airflow or speed sensor not working correctly and is sending false information and computer is telling. 10 4L80E Build Instructions These are the draft build instructions for the v2. Doesn't store a code, will not throw a CEL. I checked the speed sensor on the tranny and it seemed to be ok, no visible problems. you can feel and hear the shift, its a pretty good clunk. In other words, it won’t heat up as easily, and it has snappier, crisper shifts, yet it’s not as harsh as a racing style transmission. We also have transbrake options in both full manual and automatic shift configurations for the 4L80E. Check out our billet torque converters for 700R4, 4L60E, 200-4R, 4L80E, 6L80E, TH400, 4R70W, 4R100 and 48RE transmissions. 4L80E & TH400 Tech. 0/4L80E was a pretty common combo in 3/4 ton vans. We show you how to install FiTech's New Go Shift Electronic Transmission controller on a GM 4L60E electronic overdrive transmission. The installing shop had a new, aftermarket, top-of-the-line scan tool that had a function test for clearing shift adapts. I have the go efi 4 600hp model installed on a Ford 363w with electronic ignition it has been installed for a year and worked fine and I jumped in the truck today and it won’t respond to any throttle input it just bogs out until you let off it won’t drive over an idle any help would be greatly appreciated thanks Josh. More than likely it is gummed up. I was happy to find out that the 4L80E dipstick actually fit, although it needs some slight bending to hug it closer to the engine and away from the firewall. The shifting cannot possibly put more wear on the trasmission that the transmission shifting between 2 and 3, for example, something that it does thousands of time in one year. 4l80e 4th gear and tcc problem (running from 4L60E segment) If this is your first visit, be sure to check out the FAQ by clicking the link above. It also has a black bear tune the previous owner had done. The fact that yours shifts proves that this mechanism is ok. Introduced alongside the original 4L60 in the early 90’s the 4L80E was designed for large trucks and is designed as a heavy duty unit, rather than a transmission for smaller cars or even some pickups. We also looked at the torque converter through the inspection port, and everything was. This is similar to the 4L60E that modifies/delays the 2-3 shift for the same reason. If the tester lights, you have 12 volts to terminal A at the transmission. but it will barely get out of my driveway now. If that is the tranny temp I think it is warm. If you don't lift up on the accelerator so quickly, then it's usually the vacuum portion that causes the shift. 48 second, 1. 89 c2500 2wd 200,000 + miles, tranny wont go past 45 mph and sounds like it is struggling to move truck, sounds like somethinhg is turning hard, at times when starting out acts like it slips but then goes, fluid is ok, changed filter or screen and fluid last summer, was great for a few weeeks then acted up again, some days it is fine, not sure. I bought a van (2000 town and country LXi) for $1000 because the trans didn't shift. if you are under hard throttle, the shift is a bit smoother. will not shift into 3rd just slips. Use teflon pipe sealer. A P0748 code (pressure control solenoid circuit) will not turn on the CEL but the tranny will stop the shift adapts causing some hard shifting. istics of your 4L80E to one of two lev-els of performance, Heavy Duty or High Performance Street. Driving along at 75 on flat road, the RPM goes up, start slowing down so I give a bit more throttle and the RPM jumps like it's in neutral. In stock form the 4l80e can take A LOT more abuse than a 4l60e but as mentioned if you plan to do more than a shift kit the 4l60e parts will be cheaper to upgrade. Drop the pan, you will need to cut and splice wiring in the pan on the valve body. Pulled the codes and got P0741 (tcc perform. Impala won't shift after it gets warm Complete Transmission Repair Cost Guide › Transmission Forum – Ask an Expert › Chevrolet › Impala won't shift after it gets warm This topic contains 3 replies, has 2 voices, and was last updated by Hostgator 3 years, 11 months ago. I've verified the temps with a known good thermometer, and the gauge is correct. won't hold up to severe abuse, such as would be seen behind a nitrous'd big-block, for example. 00 - Includes New 6L80E Transmission, Free Shipping (within mainland USA), 3 Year Nationwide Warranty, HD Torque Converter. Simple solution is to install a good. Cause: Debris has stuck shift valve E in valve body. Often the delayed engagement will be most noticeable, on the first drive in the morning. The solenoids are simply too cheap to skimp on, the harnesses are usually hardened. - Heavy Duty level produces a solid, noticeably firm shift when compared to the stock shift feel. In other words, it won't heat up as easily, and it has snappier, crisper shifts, yet it's not as harsh as a racing style transmission. This is from no key inserted to inserting key and rotating to the accessory without going to the run or start positions. On a Ford and I use that because its what I know and most work the same way. One said to remove the transmission fuse and it should shift through all gears if no mechanical problems but if I remove the fuse the truck won't start. 4l80e shift kit ? 97 silverado 383 stroker 3/4 ton hd 8600 gvwr 20 inch rims i am getting a nelson performance tune, should i get a shift kit or get them to modify the shift points which is better ? and if the shift kit is better what brand ? don't want a swap out the tq converter though. i used he clutches, regular steels , hd sprags , aftermarket in put shaft , converter- 9 1/2 rear cover 12 inch 3 lock-up disk ft ,sall 4000-4500 ,transgo shift kit. Occasionally, the TH350 will hesitate on shifts, and this can be caused by a number of things, including; a vacuum line leak, a blown modulator, or the bolts on the hold-down plate not being tightened down securely. 4l80e The big brute of automotive automatics, this transmission is larger than the 700-R4/4L60 series and is capable of handling well over 1,000 horsepower when properly modified. We have developed a full line of billet torque converters with lock-up for General Motors, Ford, and Dodge transmissions for applications ranging from improved factory performance to all out competition. Drop the pan, you will need to cut and splice wiring in the pan on the valve body. Walter Combs 61,989 views. Driving along at 75 on flat road, the RPM goes up, start slowing down so I give a bit more throttle and the RPM jumps like it's in neutral. How to Check and Add Fluid to Your Automatic Transmission. As you can see, there are many, many choices when it comes to GM automatic transmissions and the modifications that can be made to them. The converter and shifts are load based. First impression: This is a split-personality gearbox--the shifts are nice and comfy at part throttle, but at WOT, the engine shoots to 5,400 rpm and kicks the car sideways on the 1-2 shift. INLET — Assembly carries flow of oil IN to cooler from. 3/4 Clutch Pack Your 4L60E has a set of clutches that work with both 3'rd and 4'th gear. Engine was running hot, approx 240. They should always be checked first if you are having a shifting problem. I'm running a '93 4L80e with an Optishift controller. I'm running a 4L80E with a stand-alone computer in my K1500. Hopefully this weekend i'll get time to get my new shift solinoids and harness installed in mine. It does not do this all the time and does not do it at no specific time i can be driving the car all day and it will start. Seems sluggish and throws code P0756. Transmission fluid gets hot and remains hot long after the vehicle has been turned off. It provides a direct connection between the input housing and the input sun gear. Doesn't store a code, will not throw a CEL. Otherwise it runs about 130 in the summer and about 110-120 in the winter. As with all transmissions, the 4T65E's operation life can be extended by keeping its temperature down.