4L60E 4WD problems with 2-3 shift flare after overhaul? - Answered by a verified Chevy Mechanic We use cookies to give you the best possible experience on our website. 75 overdrive. Each shift event in the 4L80e transmission is a clutch-engagement, rather than a band engagement or combination of the two as in the 4L60e. Taken literally, this means that your transmission is so badly worn that it is not repairable and will have to be replaced by another unit. Slipping, delayed shifts. spicer slip yoke turbo 400 th400 4l80e chevy chevrolet gmc truck yoke 32 spline. The most recently reported issues are listed below. Re: 4L80-E transmission won't shift: shawn w. Fluid is red with no abnormal smells. Cause A 12 Hz electrical feedback from the charging circuit may be affecting the transmission pressure control solenoid, causing a fluctuation of the line pressure within the transmission. Showcasing our full group of New Transmissions for sale now!. The Novak Guide to the GM 4L80E Automatic Transmission Introduction. If you hard core guys want an overdrive, Gear Venders or the 4l80E (We keep 4L80E's and their computer systems in stock too!) are reasonable choices. The computer also turns off the transmission's electronic shift solenoids which in turn causes the unit to default to a single gear only (usually 2nd or 3rd). The trans is a rebuilt and I just put it in. An Easier Way to Rebuild Planets. My transmission won't go into 3rd or 4th gear (90 Chevy 2500 4wd)? This is a used truck so I know little about the history on it. Lets first talk about the difference between a 4L60, and a 700-R4. 4L60E / 4L80E The transmissions above, are rear wheel drive 4speed automatics that are all computer controlled. light duty trucks for 1991. Six bolt has no park/neutral switch/454TBI. The shifts are not supposed to be felt. Overdrive Pressure Plate Easily add extra capacity to the OD stack in all models All RFE units 1999-2018. 4th will only work if the 2-3 solenoid gets enough pressure. - At 35,500 miles. 2nd If your trans was slipping to any damaging degree it would have torn itself apart in less than 100 miles. It wouldn't go into high gear. First gear, D1, applies the rear band for engine braking. Just second gear. Work on a 95 Chevy Silverado 3500 1 ton short wheel base 454TBI. The computer also turns off the transmission's electronic shift solenoids which in turn causes the unit to default to a single gear only (usually 2nd or 3rd). Finally, we also offer our max upgraded Extreme Duty Street/Strip series 4L80E that is rated for use with 1,500+ flywheel horsepower. The truck has enough grunt to pull just about anything, but I am worried about using 4th when towing my rig to Moab this year. 91-93 is one style trans, 94 another, 95-96 is another, 97-early 99 is another style, then late 99+ is another. If your engine revs up as you press down on the accelerator but your vehicle doesn’t accelerate as per usual or as you would expect, it’s a troublesome sign that can lead to a full-blown transmission failure. hey eaglemark not sure if the settings from hp tuners is about the same as the tbi pcm. Or in layman's terms the clutch slips until it is fully applied. 4l80e transmission electrical problems C/K Car Forums. The second speed sensor: Make sure that you do run the wires for that second speed sensor for the 4l80e. Second, I learned this evening to never clean out a MAC valve with acetone. I know this much when I open the program on my laptop the box is checked for a 4l80e and im running a 4t80e aka the transverse mounted version of 4l80. I tried with the shift lever, and also by putting the EZTCU in manual shift mode and toggling down to 1. Check for there being three complete shifts of the forward gears. No Reverse, No Forward, No Upshifts, No 2nd, No 3rd, No 4th Input Sprag Rotation Proper Torque Sequence on Valve Body Pin Location in Case Rebuilding Tips Wrong gear start / wrong shift pattern Upshifts to 2nd in Manual Low No 3rd & Rev. I've never had an electronic trans, always 350, so I'm not sure where to start looking. 56 first gear ratio offers strong take-off performance while a wide 7. This allows the spring to push the 1-2 shift valve into the upshifted position. I took it into a transmission shop owned by my neighbor where they have much experience with the 4L80E and when they took it apart, it was completely destroyed. Any help would be appreciated. (High TCC Slip in 4th gear is detected by P1870 Transmission Component Slipping) TCC Slip => 125. On the '93 models, the temp sensor is built into the internal wiring harness, not a seperate sensor. By 1700 rpm problem disappears. No Core Charge. After Overhaul After Rebuild, Slipping 2nd and 4th, No 2nd and 4th Accumulator Reference No Line Rise w. This is due to the fact that the transmission is starting out in 2nd gear. With either of these options you'll still need to have the computer reprogrammed to work with the 4l80e. This is also due to the fact that the transmission is staying in 2nd gear and the gear ratio provided by 2nd gear is gonna' keep the engine working pretty hard at any speed above 35 MPH. We provide a large inventory selection for 4L80E automatic transmission overhaul kits, parts including steels, kits, solenoids, filters, solenoids. More Details. So I wanted to post how I did mine, so when someone else is doing a search, they can have something to give them an idea. Drive in "3" to verify. The gear split in the 4l80e is so much better than the 700r4 although the 700r4 does have the lower first gear at 3. When diagnosing the problem and the cause of the whining noise, take note of when the sound is occurring, such as when the engine is idle, when shifting gears, when driving at. If the transmission filter becomes plugged due to debris, it can make a whirring noise. The tune file we created modeled a 2008 Express Van 4L80E T42 tune. What it does now is completely slip in 3rd, and I dont think it even goes fast enough to get to overdrive. Converter attachment patterns change between different transmissions. These vehicles came with the GM spacer and bolts and the flat factory flexplate. The only real difference is the name. But when warm it slip in 3rd and go into limp mode and default to 2nd gear. About a week ago, it started to slip a little when climbing a hill like sliding into gear and not a good firm shift. The only way to retrive trouble codes is with a scanner such as Tech 2 , snap-on, otc or equivelent. I have a 2006 2500 hd with the 6. Then it shifts and runs fine. 100" TH400 Steel, & 3. the only thing i can add is that my 4l80e was messin up about a year ago and found out one of the VSS had the wires stripped and throwing bad info to the ecm. Automatic Transmission problems of the 2000 Chevrolet Silverado 22 problems related to automatic transmission have been reported for the 2000 Chevrolet Silverado. Other issues with the 700R4 include the loss of the second, fourth (overdrive), and reverse gears. If you have an automatic transmission and it "slips" while you are driving it—that is, the car engine revs without the power going to the wheels—the most common cause (though not the only possible cause) is low transmission fluid. It will not downshift to 1. Come and see what the largest 4WD transmission store in the southern hemisphere has available for you. I tried with the shift lever, and also by putting the EZTCU in manual shift mode and toggling down to 1. 4L80E highway speed slip? If this is your first visit, be sure to check out the FAQ by clicking the link above. this is a computer. Check out our billet torque converters for 700R4, 4L60E, 200-4R, 4L80E, 6L80E, TH400, 4R70W, 4R100 and 48RE transmissions. The shifts are not supposed to be felt. 48 first gear, 1. Problem: It has no first gear. The trans is a rebuilt and I just put it in. This is a computer controlled transmission first introduced in G. Sudden grinding noise with no prior warning primarily in 2nd gear, behavior in reverse may be abnormal; sunshell is fractured. Engine Speed > 450 rpm >7. Does anyone tow with a GM 4L80E or 4L85E auto? I have a 95 K2500 6. Also don't forget to use the R-1, 1-R shifting pattern when plowing, reduces the chance of loosing the reverse band, common on the 4L80e. Reverse also works fine. 866 669-3343. What will be noticed after 38 June 2006 DECIPHERING GM TRANSMISSION. The thing is, if i step on the gas and take off with some power, it shifts normally. 1st and 3rd only, will not work in 2nd ,4th or Reverse sunshell is fractured or splines are sheared off. Looking for 200r4 Transmission online? Discover 200r4 Transmission on sale below with the largest variety of 200r4 Transmission anywhere online. 49932 TH125C Transmission shift kit 1980-on (With new valvebody plate). Follow our handy step-by-step guide below to diagnose and repair the problem! Step 1 - Determine which transmission the truck has. Slipping P1870 This DTC detects excessive TCC slip when the torque converter clutch should be engaged. ptc converter 4l80e | eBay. January 14, 2005. The 1st gear works fine, then it will skip 2nd as he accelerates and then drops into 3rd. The most recently reported issues are listed below. Common problems with the 4L60E transmission include the third and fourth gears not working, slow or slipping reverse gear and sudden grinding noise in second gear. Post your own time slips below. I installed a 700r4 in my 60 chevy. After the transmission slipped a lot, it would go into limp mode, or stuck in 2nd gear as it's better known. Was not slipping before service, now it is after having the 50k done. A TH400 behind my 496BBC. The 200R4 can be built to take the torque of a 455 and I think both it and the early 700R4 just need a $40 lockup switch kit to run in a non-computer car. it is a dealer part $45 but the cover for the 6. AUTO TRANS DIAGNOSIS - W4A020 & W4A040Article Text (p. I think if you have ruled out everything else it's time to look at the 2-4 servo and the 2-4 band. This trans is 40lbs heavier than my TH400. Crossmember for the 4L60E to 4L80E transmission conversion, 2000 up Tahoe and some others. Accumulator piston bad - what are symptoms? My tranny is not shifting into 2nd gear until it reaches about 2700 RPM. Only under high torque or high vehicle speeds will the PCM command the converter clutch to be fully locked. 4l80e converter you can use a stock one or a customer torque converter from a after market company. I have a 1992 chevy 2500 with the 1 ton tow package equipped with a 4l80e. GM 4-Speed Automatics 700R4/4L60E/4L80E There are two basic GM 4-Speed automatics: The light duty 700R4/4L60E found mainly in half ton and car applications, and the heavy duty 4L80E in the heavier applications. Otherwise, 2-4 band is worn out. This web site was created for RACE-TRACK. When i got home, I unhooked the battery to try and reset the computer. All headers clear the factory OEM A/C box, power steering box, and power brakes. They said when they were going down the interstate it would almost act like you put it in neutral and started revving it let off for a second and it would grab and like it should. Was having trouble with my automatic 06 TJ shifting hard from 1st to 2nd gear. The reason the transmission was revving up going into OD was that 4th gear was slipping that much. Our transmissions suppliers can provide quotes you wont imagine and get the transmission on pallet and shipped to your location of choice ready for your mechanic to install. Allison 1000 transmission specs, ratios, and information. do NOT contact me with unsolicited services or offers; post id: 6984908815. Performance Built MT1 4L80E Automatic Transmission and Torque Converter. That said, the units in the Corvette are pretty stocky. 700R4/4L60E’s have a low 3. All of my gm vehicles i run F**d type f fluid. 56 first gear ratio offers strong take-off performance while a wide 7. the only thing i can add is that my 4l80e was messin up about a year ago and found out one of the VSS had the wires stripped and throwing bad info to the ecm. -I have also logged the shift solenoids and tried to match them up to the normal 4l80e specs and they don't seem to jive at all. I have a 4T80E in my 93 Eldo which is the transverse version of the 4L80E which is an electronic rendition of a 700R4. We offer an upgraded Heavy Duty Street/Strip series 4L80E that is capable of withstanding 1,000+ flywheel horsepower. The 4L80E transmission is known for sensor problems. Below is a list of N54 powered vehicles in the 10's, along with any details such as videos, build links or time slips. It will not downshift to 1. Also don't forget to use the R-1, 1-R shifting pattern when plowing, reduces the chance of loosing the reverse band, common on the 4L80e. 8-Second Geo Tracker With a Dirty Little Secret: A 6. 3L automatic. Why is turbo400 slipping out of 2nd 3rd gear? What would cause a 4L80E trans in a 94 Chev c2500 to fall out of high gear It isn't slipping? get to 3000 RPMs in 2nd or 3rd gear and then. The 4L80E, an electronic, overdrive-equipped version of the venerable TH-400, is tough enough to handle just about whatever hell you put it through when built properly. If no code appears in ”3" but 68 appears when 4th is used the problem is slipping 4th clutch. It would probably be a good idea to check the throttle position sensor and see if it is within it's normal operating parameters. I'm not sure whether they just changed the fluid and filter, or if they flushed it with a machine. 076" 4L80E Steels to get the correct clearance of. I've done a few long cruises in different ranges and some low boost pulls(10psi). 0 Multipoint EFI no my 540 ci BBC, the E6/92 Digital Ignition & Coil, Dual Sync Distributor, and the TCI EZ-TCU trans controller for my 4L80e transmission and connected to my ECU via CAN connection. uk: Car & Motorbike. "Unless the filter is changed or cleaned, the transmission can be damaged," said Lenny Perry, co­owner of Lee & Franks Transmission Service on Kedzie Avenue in Chicago. Slipping 4L80E transmission? While driving the veichle it would slip when upshifting so i put it down into third and tryed it without overdrive. I'm running a full suite of FAST products that include the XFI 2. Work on a 95 Chevy Silverado 3500 1 ton short wheel base 454TBI. Shift Solenoid A And B Basics. The 4L80e use 2 solenoids to controll all the shifting. The 4L80E is almost 180lbs. com was first made aware of the issue when Daryl Watkins, the owner of a. Fleetwood RV is a Southern California company that started in 1950 by John C. Can anyone tell me if there is a conversion kit to replace it with a manual. com FREE DELIVERY possible on eligible purchases. This manual can be used in collusion with any type of scanner utilized in retrieving these codes from the computer. Try not to run or drive the car or further damage could result. GEAR" PID is not switching to 2nd gear until around 63mph or 7440 rpm. The 4L60e is slipping going into 2nd and from 2nd slipping down to 1st. Converter attachment patterns change between different transmissions. Tremec Web Site. How a Transmission Valve Body Works. Time commitments may vary as this is a custom built transmission. The 4L80E transmission is known for sensor problems. I have just about the same problem on my '93 3500. Performance Built MT1 4L80E Automatic Transmission and Torque Converter. Otherwise, 2-4 band is worn out. GM RWD Torque Converters Starting 1980-up, GM used a 4-digit ID sticker located on the converter body to help identify it. If this is your first visit, be sure to check out the FAQ by clicking the link above. 4L80E Hard Shifting Jan 25 2012, 5:52am Hi, I have a 1992 silverado with a 4L80E trans. I have done extensive testing in my own truck already, but this is just an added measure to prove the system since it is still quite new. Servo seals may be damaged (can be fixed without removing trans. When this happens, fluid is restricted, pressure in the transmission drops. My friend has a 1996 K1500 with a 4L60E. Now when cold the transmission shifts pretty good, I think it's a little soft on the 2-3 shift. When I bought it used two months ago they told me it was rebuilt two or three years ago. If the slipping is caused by low fluid, it will get worse as the transmission gets hotter. The only way to retrive trouble codes is with a scanner such as Tech 2 , snap-on, otc or equivelent. 0 for 3rd gear. 4l60e-re No the trans does not slip its like the ***** gears aren't even ther ok like when u put it in OD it will go through all the gears(up to second)just fine then bam just like in neutral. The guy at Orange County transmissions said the exact same thing. 2-4 band is slipping. This is also due to the fact that the transmission is staying in 2nd gear and the gear ratio provided by 2nd gear is gonna' keep the engine working pretty hard at any speed above 35 MPH. Yes of course, it is made in the U. If the sprag slipping occurs on the starting line, the converter in turn will "load" the engine just for a moment (i. Mike Stevens – m2ka attbi. The first 80e I had built did the exact same thing until the 1-2 clutches cooked and now the new one I just put in last weekend is doing the same t. Put a lock up converter in it and leave. The 2007 Chevrolet Silverado has 12 problems reported for transmission failure. This web site was created for RACE-TRACK. It seems to hesitate on the shift from 1st to 2nd gear an then slams into 2nd hard. Showcasing our full group of New Transmissions for sale now!. 3L automatic. If you have a front-wheel-drive car, it's stuck on the side of the engine under the hood. But before you go ahead with any repairs, SMELL the fluid. If an AT is slipping and the fluid is at the proper level, repair is knocking at your door. 2 might have it. No Reverse, No Forward, No Upshifts, No 2nd, No 3rd, No 4th Input Sprag Rotation Proper Torque Sequence on Valve Body Pin Location in Case Rebuilding Tips Wrong gear start / wrong shift pattern Upshifts to 2nd in Manual Low No 3rd & Rev. To make the 4L80E plug-and-play ready a O balance flywheel and starter are incorporated into the adapter design. Two versions are available: a slip-yoke design for use with the LT1 engine and a fixed-yoke design to be used with the LT4. The trans has two external coolers, one in the radiator and one in front of the radiator. 4l60e, 4L80E Transmission. January 14, 2005. Works with the #3XX deep cast aluminum pan that holds 3 3/4 extra quarts of fluid. The u joints seem fine, rearend is still pretty tight. I have posted a log and a screenshot showing that the "GM. Second, the constant slipping could be varied to improve economy and performance by sustaining just enough load on the engine at all times to keep RPM's in the best range for power and economy. A delayed engagement is a type of slip in the automatic transmission. But while the 4L80E is a strong, heavy-duty transmission, during the first few years of production the 4L80E was not as durable as its design permitted due mainly to faulty parts. The GM 4L60E/65E/70E-4L80E/85E Diagnostic Code Book is designed to provide the technician with a step by step diagnostic approach to each and every transmission code available from 1991 to the 2007 model year. Compatible with most popular GM transmissions, including the 4L60E, 4L65E, 4L80E and 4L85E, and the TCI ® 6x Six-Speed Transmission. You may have to register before you can post: click the register link above to proceed. Largest array of express van at unbelievable prices. 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. They simply aren’t accelerating fast enough that the rotating mass really comes into play. 700R4/4L60E’s have a low 3. Self diagnostics allow users of every skill level to fully utilize the EZ-TCU™. 273 DIAMETER SHAFT GM Buick Oldsmobile Pontiac Chevrolet Chevy 4L80E 4L85E Transmission Parts 4L80, BAND FRONT 1. The TH400 & 4L80E used the same narrow snap ring during production, Most HD snap ring are actually production A727 Direct Drum snap rings that are marked up & sold as a special part for the TH400/4L80E Intermediate Clutch. And, if it's computer controlled like most transmissions are these days, the computer will also have to be replaced. They are not all the same so removing the sensor on the affected vehicle and jotting down the number is the best course to follow. 2-4 band is slipping. GM Replacement Transmissions Replacing a failed transmission can be very costly, which is why it's so important to find the best price you can for a replacement online. Otherwise, 2-4 band is worn out. The only real difference is the name. With either of these options you'll still need to have the computer reprogrammed to work with the 4l80e. AUTO TRANS DIAGNOSIS - W4A020 & W4A040Article Text (p. When I got it it was slightly low fluid level and slipping a little then engaging. 700, BAND 2ND/4TH HIGH ENERGY 4L60E 92-UP BORG WARNER DARK GREEN LINING. 93 chevy silverado ext cad 3500 long wheel base 4l80e trans. Work on a 95 Chevy Silverado 3500 1 ton short wheel base 454TBI. A TH400 behind my 496BBC. The 2nd to 3rd gear upshift is delayed only when coolant temperature is 0-140øF (0-60øC). I did this even in my Mazda 3 as in the manual it said use 2nd gear for starting in bad weather to limit slippage. 5-million Bugatti Chiron. The other great alternative is to run a T42 with 4L80E segments, but this can get tricky. R&R Will not work in 2nd or 4th gear 2-4 band is slipping. Otherwise, 2-4 band is worn out. Common problems with the 4L60E transmission include the third and fourth gears not working, slow or slipping reverse gear and sudden grinding noise in second gear. This piece broke! https://amzn. If I let it cool, all is good again. The 4L80E transmission is the advanced progeny of the legendary TurboHydramatic TH400 automatic transmission, and is based heavily on the 400 in both parts and strength, yet featuring an added overdrive gear, a lock-up torque converter and advanced electronic controls. Check trans fuse underhood, and. Southern Performance Systems offers a 6L80E Transmission Package that includes: 6L80E Transmission - Factory Take-Out (Extremely Low Mileage) 2,400 RPM Torque Converter. second speed sensor. 8L GM motor through a friend that runs a salvage yard, equipped with paper head gaskets, and paired it up with a 76mm turbocharger and a 4L80E transmission out of a 2000 Silverado pickup for the new project. All of my gm vehicles i run F**d type f fluid. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode. This is a 95 3500 series w/5. Otherwise, 2-4 band is worn out. Look on craigslist if it needs to be replaced. So i ripped the t56 out and sold it and bought a 4l80e from the junkyard for 100 bucks, slapped in a hd2 kit and started over. We build your transmission with any aftermarket shaft to adapt to transfer cases like Atlas and Hero, just to name a few. We've listed some of the most common GM transmission part numbers below, making it easy to look up our pricing and place your order. Find new transmissions for sale today on the internet. The 4L60e is slipping going into 2nd and from 2nd slipping down to 1st. Reasons for the transmission slipping include things such as worn parts and gears, or a bad clutch, but these are not as common as just plain low or ineffective fluid. ptc converter 4l80e | eBay. Yes of course, it is made in the U. 4L80E wont upshift Dec 17 th, 2009 at 1 Still wont upshift to second until I let off the throttle. 4L80E TECH NOTES TCC shudder at low rpm 1400 - 1700, however no codes, ratio is correct and no TCC slip rpm shown on movie and signal doesn't change. 0l 4l80e Trans whine, pump issue, slip questions Discussion in 'LS1, LS2, LS6, LT1, SBC Turbo and other GM Specfic Turbo Tech' started by BlownShovel, Feb 6, 2012. 39 = Converter clutch. I had a 2003 Chevy Silverado with the 4 speed electronic shifting transmission. I have a Chevelle with 402 LSx with a 4L80E (Pro Torque converter) controlled by the Dominator ECU using the Holley harness. Drive in "3" to verify. Don't keep driving it while it is slipping!. torque converter slip when the TCC is commanded ON in 2nd and/or 3rd Gear Only. Happel discovered a 1999 4. When it fails to do so, you naturally get upset either because of the trouble you are not looking for or the fear of how much the fix may cost. Best runs with the old setup was 6. Turn off email alerts. Transmission slipped so he rebuilt it. This article applies to C5, C6 and C7 Corvette (1997-2015). Valve body gaskets included. I then checked the wiring from the computer plug to the trans plug and input sensor and they all rang out for continuity. Check out our billet torque converters for 700R4, 4L60E, 200-4R, 4L80E, 6L80E, TH400, 4R70W, 4R100 and 48RE transmissions. A TH400 behind my 496BBC. Find Yokes with Spicer 1350 Universal Joint Style and 4L80E Transmission Type and get Free Shipping on Orders Over $99 at Summit Racing!. Is the holley 302-2 or mast pan better?. 62 2nd, 1:1 3rd, and a 0. The part# I have written in my book is A22878C (. Best runs with the old setup was 6. Slipping P1870 This DTC detects excessive TCC slip when the torque converter clutch should be engaged. But before you go ahead with any repairs, SMELL the fluid. Transmission electrical diagnosis troubleshooting help on all your transmission problems or questions. The 4L80E, an electronic, overdrive-equipped version of the venerable TH-400, is tough enough to handle just about whatever hell you put it through when built properly. There was one other occasion when the trans did what you said. Transmission slipping, or gears slipping, is a common transmission problem and a real cause for concern. Long tubes have slip on collector. 8L GM motor through a friend that runs a salvage yard, equipped with paper head gaskets, and paired it up with a 76mm turbocharger and a 4L80E transmission out of a 2000 Silverado pickup for the new project. Transmission repairs can be very costly so be sure to completely diagnose and be sure of the symptoms of your problem before you take your car in for a transmission service. It will start off in first normally and shift to and drive in second normally. The u joints seem fine, rearend is still pretty tight. Engine Speed > 450 rpm >7. This is also not to uncommon in 4L80E's. $30 and it was fixed. I didn't think much of it. A delayed engagement is a type of slip in the automatic transmission. Only under high torque or high vehicle speeds will the PCM command the converter clutch to be fully locked. a couple of hundredths) and the car will roll through the stage beam at an RPM less than normal stall speed. com : Car complaints, car problems and defect information. It will start off in first normally and shift to and drive in second normally. Due to some driveability-related is-sues, a reflash was introduced to alter this strategy. 5-5-09 : I have a 1992 van with a 350 engine and a 4L80E tramsmission. light duty trucks for 1991. Showcasing 4 chevy in stock right now online. Re: 4l80e problem First gear, D4, is using the direct clutch only. I have charged the fliud (World standard) twice and can not tell any big differance. Why is Your Transmission Shifting Hard When Hot? Transmission machine is a part of transmission system, which regulates the power that comes to driveshaft from engine to keep it in moderation. If you have a front-wheel-drive car, it's stuck on the side of the engine under the hood. Re: 4L80E transmission shifting trouble: Bubba The Bus Tech: 6-14-16 : The 4L80E is pretty much as indestructable as a GM built transmission ever built. Other issues with the 700R4 include the loss of the second, fourth (overdrive), and reverse gears. As the speed of the first fan increases it pushes greater amounts of air to the point where the second fan is turning at nearly the same speed. - At 35,500 miles. 0-liter Vortec with a 4l80E transmission is the only Gen III/ IV engine that accepts an early GM transmission without a flexplat adapter or spacer. When i got home, I unhooked the battery to try and reset the computer. Best runs with the old setup was 6. now have a full-billet 200 from dave husek that is running 10's with low miles so we will see but i love the tranny. the only thing i can add is that my 4l80e was messin up about a year ago and found out one of the VSS had the wires stripped and throwing bad info to the ecm. Codes can be cleared by. The first issue I noticed is that the car would not shift into 2nd gear and would bounce off the rev limiter. Here's what you need to know. Our transmission controllers are compact, packed with features, and have a built-in display for tuning as well as user-friendly software for more in-depth tuning. 4L80e fit in 3 Montes that I personally have been part of and no mods to the trans tunnel were needed. My 97 Jimmy Z-71 v-8. Crossmember for the 4L60E to 4L80E transmission conversion, 2000 up Tahoe and some others. The transmission shifts erratically, slips or does not shift at all.