4l80e no reverse or neutral Watch this video - it has the recipe IIRC. When i finished up truck backed out fine but now has no forward gears unless you rev to moon. And in reverse it was like transbrake. Removed harness and same results. 4l60e/4l65e/4l70e >>> 6l80e/6l90e - LS1TECH - Camaro and Firebird Forum. 0L 4l80e no reverse, thought i could put the pin extender on and call it a day, still no reverse. Aug 8, 2024 · 4l60e to 4l80e swap problemsSun shell reverse gm reaction Difference between 4l60e and 4l80e (4l60e vs 4l80e)4l60e transmission, no reverse. Dec 15, 2021 · Low mile 4L80e (60k). Still no reverse. All new fluid, filter, lines, cooler. Required. 98. 10. Center Support Seal (639) Leaking Center Support Bolt (25) Nov 26, 2023 · 4l60e shift linkage diagram 4l60e to 4l80e swap problems 4l80e no reverse. its been like this for a few weeks now. 3L swap, Sanderson shorties, 4l80e, Comp Cam 216/220, CAI, Currrent Performance Tune, Magnaflow Exhaust Dec 15, 2009 · No Torque In Reverse & Third 1. Has a new range switch. Fluid level okay with the engine and transmission warm? Check on a level surface? Fluid level is good and checked on level with transmission warm 5. Dec 20, 2011 · 4l80e only want to go forward even in neutral! Jump to Latest 21K views 12 replies 7 participants last post by bow2no1 Dec 28, 2011 Mar 9, 2012 · So i shifted from neutral to drive at 5800rpm. Park is park, reverse is reverse, neutral is park, D4 and D3 are current gear 1, D2 is 2, and D1 I did a full segment swap from the stock read entire. Jul 30, 2014 · Hey All, I am looking at purchasing a 91 crew cab with a 350TBI and a 4l80e/np205 tranny with dana60 and 14ff w/4. 0L automatic that when put on neutral, it drives. I can drop 2k on a replacement or I can try to fix it myself. A torque con-verter clutch automatically engages at cruising speeds to improve fuel efficiency. 3l with 4l80e transmission, 300k miles on the engine, 2000 make year. It acts exactly as neutral. Oct 2, 2016 · For 1 months ago i bought a Chevrolet Suburban 6. I drained the pan, replaced the filter, filled it back up. There are no codes and everything seems to be in working order according to the scanner. No reverse seems to be a nagging problem that these transmissions can have, though I personally haven't had to deal with it yet. Fluid is full. Dec 3, 2007 · I have a 1994 6. if you see no fluid try to drive it with the plug unplugged in reverse. I dropped the pan and changed the filter and cleaned out the grudge. Jun 6, 2015 · 4L80E Swap - Reverse Lights - HELP! V8 and V6 Transmissions / Driveline (6L80 / 6L50 / TR6060 / AY6) - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums - Camaro5. really, if there is no engine braking on decell,that would tend to lead that the low and reverse band is not appling. . The factory forward clutch hub is often found destroyed in many applications, resulting in a no forward condition. com FREE DELIVERY possible on eligible purchases Customer: 2006 GMC 4L80E shifts into reverse, but will not shift into drive. First, second, third no luck. 7 v8. No job currently so buying a new trans or going to shop where all I get is "that'll be $3000" really not an option. Below we will cover the most common problems that cause reverse to fail. if anyone else knows anything let us know Jan 7, 2014 · New to trans rebuilding. Assembled in Wichita, Kansas with USA made OEM grade TXL wire; Compatible with 1995 to 2004 GM 4-speed automatic transmission applications; Includes: 2 pigtails w/ 6 inch May 19, 2018 · So, what causes the no 3rd gear or 4th gear problem? Below are some common things that fail in the 4L80E and cause this problem. You need 4l80e trans no reverse. 4L80E is always in drive - 4L80e has no reverse. Has forward. No reverse now -not even a hint of reverse. Apr 17, 2017 · I got this 2000 4l80e tranny in after a rebuild of the owner saying there is a very soft movement forward and reverse if the selector in OD. Apr 21, 2019 · Park/Reverse/Neutral all work fine. May 10, 2007 · Driving without problems for 8 years a 3500 K dually 6. Friend hooked to my data port and scanned engine and transmission at idle and at 25 mph, results - no codes set. No problem with reverse previously . Center Support (640) Leaking at the case, or the support is broken. theres about a million things it could be but im kinda Aug 27, 2012 · Just got my 4l80e back from a rebuild and looking at the neutral safety switch etc. One would imagine that this component would be robust due to the nature of its application, but unfortunately it is not. Nov 21, 2011 · It's pretty obvious that no reverse and no engine braking in low is caused by the band not grabbing the reaction carrier. This is COMMON on 4L80Es due to servo pin length and/or band diameter. I would recheck the low and reverse servo and pin for proper operation. Difference between 4l60e and 4l80e (4l60e vs 4l80e) How to wire a 4l60/4l80 neutral safety switch for ls swap reverse4l60e vs 4l80e differences. Before dropping the pan any idea why wouldn’t read reverse on scanner when in reverse. But if the selector is in 3 or 2 or 1 it has full movement and drivable, ones rolling and put the selector in OD it shifts corect trough all gears exept reverse becouse you have to stop to shift reverse. Anyway reverse it into the garage and check the fluid. The longer I drive and the faster I go the worse the condition gets. I have built 3 FMVB 4l80e transgo trannies. this will Mar 10, 2011 · no reverse and forward neutral. 4l60e no reverse!4l60e transmission line diagram Difference 4lDiy 4l60e no reverse. Aug 20, 2024 · Started truck, no forward gears in drive, or manual 321. com Aug 5, 2023 · Addressing the “No Reverse” issue in the 4L80E transmission requires a systematic approach encompassing mechanical, electrical, and hydraulic inspections. Put it back in drive + 4hi, got to 15 mph and switch to 2 hi, was able to go around the block slowly and did feel it make one shift. parked the car over night, the next morning i started it up, put it in reverse and May 4, 2018 · Having no reverse can be a tricky issue, especially if you happened to park against a wall. 10-11-08 12:58 PM - Post# 1539742 In response to illustrator732000 Hi and welcome to ChevyTalk; With your 8600GVWR your truck will have the 4L80E. No reverse is very common in the 4L60E. Deciding wether to rebuild or get a junkyard trans, gonna check the junkyard for compatible while i'm out tomorrow, there's a 2005 silverado in their yard, along with an 2007. :homer: If you have a failure in reverse gearing in your turbo 400 or 4L80E GM Transmission check the rod length for the reverse servo it could just be a little shor My reverse went out. Scanned and pedal is showing command throttle moving as it should but does not. Identifying and fixing electrical component failures is crucial for the health of your 4L80E transmission. well my truck and tranny have been running great up until yesterday. still have all forward gears. they sell 2 diffrent kits also older 4l80e pre 1998. Torque converter either has loose lug bolts, is out of balance or has internal failure. I rebuilt the back brakes and bearing and seals and pulled out of the shop and turned it around and nosed back in to redo the fronts. 3 v6, i was driving it two years ago and the transmission worked just fine when i locked the motor up so i stored it away up till the start of this year, put a new motor from an s10 in it and got it to crank up and it idles just fine, but when i go to drive it i have reverse and no forward gears at all, so i took Jan 2, 2024 · No reverse 2nd or 4th 4l60e 4l65e 4l70e 4l75e4l60e vs 4l80e: difference between 4l60e and 4l80e 4l60 input sun disassembly shell remove front4l60e no 2nd 4th and reverse. Aug 22, 2009 · GM Service Information actually has a "No Torque in Reverse and Third" chart and a "No Reverse" chart. Have you retrieved Codes? Have not had access to tech 2 scan tool, but plan to 4L80E Operator! With a built in reverse activation, neutral safety, and a true one handed operation this shifter is the perfect balance of easy to use and race ready! Mar 25, 2024 · A gm 4l60 e reaction sun shell stripped, no reverse. Nov 5, 2006 · Ok, the Vehicle is a 1999 Chevy 3500 HD. got it fixed, everything was fine. I borrowed a friends snap-on MT2500 and got into the electronics. 10 gears 256k final count Censored wiring went retarded :banghead: May 14, 2011 · Truck has 140,000 miles. Hard shifting is bad, so I'm going to guess you have a problem in the center support area. E40 4l80 swap trailblazer ss 2006 Also, using the scanner, the trans doesnt seem to know what gear I want. The kinda clunk into 2nd I suppose could be described as slipping but the 1st gear neutral situation is surely something else right? Jan 14, 2005 · Line Pressure Booster Kit 4L80E-LB1. Fluid was full but smells burnt and it May 27, 2018 · No reverse is normally a broken band or cracked apply piston in early units. TROUBLESHOOTING THE 4L80E AUTOMATIC TRANSMISSION INTRODUCTION The Hydra-matic 4L80E is a 4-speed automatic transmission which uses electronic control for smooth shifting. I have no idea why. I am sorry to ask here but its chevrolet family so This time I tried to move it and it did advance at first but then died and revving the engine would kind of try to advance but like at 1% of power. broke tranny mount again, so i planned to drive it very nice until i had a chance to replace it again. I replaced all clutch packs,pressure plates,bands, and cleaned thoroughly. Forward clutch housing. Tried manually shifting to 1st 2nd and 3rd and it would not move in any of those gears. and still Shift Range Inhibited. 2 manual 4x4 3/4+ton 64,013 miles (5-1-19) The Blowby Queen '94 Chevy 'burb Silverado K2500 4L80E 4. 4l60 input sun disassembly shell remove frontTransmission identification charts 4l80e neutral safety switch wiring4l60e vs 4l80e differences. (Best way to describe the noise would be trying to mash 1st gear in a manual transmission without the clutch, very horrible sound) Tried: Unhooking electrical connector on side of trans. or have any suggestions i'm out of ideas Mar 29, 2017 · 2004 chevrolet silverado 2500 NO REVERSE No previous transmission problems, fluid clean w/no smell and perfect - Chevrolet Silverado 2500 question Search Fixya Press enter to search. Noise/Vibration 1. 2 diesel from ,91 now ,tranny 4L80E. Oct 29, 2007 · 2001 S10 Reg Cab (DD) Moog 5664 springs 2006 GTO (Toy) Few mods 96 S10 SS (Real SS) Sold 5. Check Sep 28, 2009 · A bind up in the forward clutch drum will cause a no reverse condition BUT at the same time you will have forward drive in neutral, as if in 1st gear. Feb 11, 2018 · No reverse or neutral Jump to Latest 6. Sorry for Yes on the 4l80E the switch is also the first culprit to address, although the linkage must also be checked, the forward clutch is applied in neutral,if it tries to pull forward. Reverse will act like a transbrake, the engine will load against the stall converter, the vehicle may engage reverse and drive through the welded together or too tight forward clutches. The reverse light switch and plug can be seen in this picture - at the bottom of the steering column. How to wire a 4l60/4l80 neutral safety switch for LS swap reverse. Reverse works fine. Reinstalled it, started the engine again, still no pressure in reverse or forward on the gauge, but the tires would turn? I was told to change out the pressure control solenoid prior to removing the trans to see if that would fix it. Forward clutch hub broken. I know the shifter is going to the reverse position correctly as the reverse lights come on. Recommended. This is not a permanen Sep 27, 2003 · What would cause my '93 chev 6. 4l80e neutral safety switch wiring Diy 4l60e no reverse No reverse 6l80 after rebuilt. 2. Did some more full throttle tests after and it shifts nice and firm without any issues. No Torque In Second Gear Intermediate sprag broken or worn. We have about 10 quarts of fluid in the trans at this point. It's worth noting that the reverse gear is still very strong and seems to have no issues at all. Reverse only tranny transmission repair May 7, 2023 · In drive first and second gear work fine but when it feels like it is attempting to shift into third gear it feels like neutral, the engine revs high but speed does not increase. Quadstar Tuning. 5 diesel with no reverse. Jacking up rear tires, ran through N May 10, 2015 · Hi guys, its been a while since iv last been on here. I pulled the gauge and checked it with air pressure and it seemed to be working correctly. when the trans is shifted into reverse it locks up like park. shift back to reverse and idle comes back up Jun 19, 2007 · pull in and out of the driveway 10 times great, on try 11 truck starts surging in reverse --kind of like the engine is responding to a load, and trying to accelreate, keep foot on brake engine sounds like it might die--shift to neutral and everything is a-ok back to reverse and surging starts again -switch to drive and it goes forward as it should. 4L80E fresh rebuild, no reverse Apr 14, 2021 · It is a bread box van Chevrolet Workhorse P30, vortec v6 4. There is no short in the wiring. Fighting a weird issue where the Transmission basically free wheels in reverse (meaning it feels like it's in neutral) but only after driving for at least 30 minutes or so. Aug 11, 2010 · umm i have the same thing. befor i chaged the filter i could shift into od after about 45mph but after new filter and fluid today there is no more od. So I should be running the correct 4l80e segments. I pulled the reverse servo/accumulator apart and spot where the shaft pushes on the band appears to be in the correct spot. Jan 8, 2012 · No expert here so don't expect much from my experience. com FREE DELIVERY possible on eligible purchases May 28, 2014 · 93 reg cab long box k3500 RIP 6. Fluid is full and clean. Shift linkage is correct. has a 454 with a 4l80e tranny. Oct 25, 2015 · 1985 GMC 6. The transmission acts like it in neutral Mechanic's Assistant: How old is the transmission? Have you noticed any leaking? Customer: the transmission was rebuilt last year and no problems. Simple male blade crimp-on plugs will slide into the OE plug. What does a 4l60e transmission fit4l80e neutral safety switch wiring No reverse 2nd or 4th 4l60e 4l65e 4l70e 4l75e07 4l60e no reverse. Oct 8, 2024 · Howdy, I've got an M1123 Humvee with the 4L80E. In any forward gear it acts just like its in neutral. 5 td 4l80e borg-warner t case with pto provision 4. Supposedly it has no reverse and no natural, but shifts through the forward gears just fine. At a previous job, we had a work van (350/4L80e 3500) that would often not want to reverse, and it was some sort of seal under the valve body, I think. Jul 15, 2018 · I got the trans all together and installed it. 4L60E No Reverse Causes. Electrical issues can cause significant problems, from erratic shifting to complete transmission failure. All forward gears work perfectly. It offers a fourth gear overdrive to increase fuel efficiency. But sinds twoo weeks it has no reverse anymore. 4L80-E, 2-3 Neutral; 3-4 Neutral; No 4th; 2nd Gear starts; No Reverse; No engine braking in manual Park Neutral Position and Back-up Lamp Switch Replace 24229422 D2263C 12450016 352-3201 Fit for Cadillac Chevy GMC Neutral Safety Switch for 4L60E 4L80E Transmission Hi there! My name is Peter and I just wanted to say how impressed I am with the Park Neutral Position and Back-up Lamp Switch Replace. The fluid was brown and low. 03 silverado no reverse and truck drives in neutral. It doesn't even think about moving the tires on the lift. Drove it for about 3 miles, pan was leaking. Parked it as I was out of time. Jul 17, 2009 · I have a 1995 crew cab log box with a 350 and a 4L80E will not work in first and overdrive but reverse, second, third and torque converter lock up work like a dream, checked the solenoids in the trans and replaced it, checked the temp sensor, new fluid and filter any ideas. I have a 2000 Chevy express 2500 work van with a 5. 2001 GMC 2500HD 4L80-E Reverse servo extension for a quick fix to get back on the road without pulling the transmission out and down. i have replaced the nsbu and the ignition switch because that is another common solution. Problems with no overdrive can happen because faults associated with these two 4L80 transmission out of a 95 chevy 2500 6. We used PCMofNC's adapter harness and changed the tune per their instructions. No Torque Multiplication Stator shaft is broken or detached from pump cover. Yes 4th gear. No "shift kit" will fix this. Manually shifting into first or second works fine as well but manually shifting into third results in the same neutral feel with free revving engine and no forward power. Started it up and put it in drive and it wouldnt move. No solenoid for second gear 2-3 energized for third Both 1-2 and the 2-3 for 4th gear. 4L80E transmission Reverse works ok no forward gears. if i shift into drive it will go threw 1,2, and d and thats all i get. Aug 6, 2024 · Modern vehicles rely heavily on electronics, and the 4L80E transmission is no exception. May 2, 2023 · Installed the 4L80e with new 3500 stall convertor. Anywho, lost reverse, all the forward gears are fine, fluid is normal, not foamed or burned. The two shifting solenoids will engage like this: 1-2 energized for first gear. Reverse will spin the tires still. Trying not to overfill. it only does it in drive once the truck reaches 10kph and immidiatly in reverse and it wont move in reverse at all not even try. Mar 9, 2015 · 3. Feb 19, 2013 · The other morning i went out to move one of our plow trucks. Aug 9, 2011 · This is the problem, reverse is the only gear that works. Oct 25, 2009 · just got this 93 up and going and when i shift into reverse ot overdrive all i get is a faint jerk and then nothing at all. Switch neutral solenoid transmission vss trucks exatin hooking wiringall07 4l60e no reverse How many quarts does a 4l60e hold?4l60e vs 4l80e differences. i would first unplug the main plug for the trans, it can leak fuild into the plug and short the pins and cause all sorts of problems. Any service engine light: yes/no. I used 6x32x2" screws, lock washers and nuts to retain the switches. Tried it in 4 hi, and had very sluggish movement forward, put it in neutral went to 4 lo, was able to creep around parking lot. In neutral it pulled forward and drove 1-2-3-4 like normally, but no torque converter lockup. Midland Diesel rebuilt 5221 Blue Label IP W/ULSD Upgrade & rebuilt Bosch injectors @ 2200psi. I mean to say, when i shift in to R , i feel the klick and it seems it will go reverse but it not go,s. I am getting forward wheel movement when in Neutral Position. no Allisonforeman Factory trained on all Allison Transmission product including the Hybrid electric drives. 5td 4x4 with 4L80E tranny to shift into neutral while driving it happened just for no reason this evening while in drive at about 55km/h it went into neutral and both drive and overdrive would not get me moving i came to a complete stop put it into reverse and it worked then i put it into drive and away i went to get back home with no other problems any ideas? Sep 7, 2015 · The gauge still reads 0. The PCM sends the proper signals to the transmission. Hard shifts can break the forward apply piston and roller clutches as well as rip the band anchor loose. I had to drill out the mounting holes slightly. try that for a temp fix. Is reverse How to wire up neutral safety switch and reverse lights on 4l60 and 4l80. Manual shifting with normal driving still has the issues. The bind up in reverse is a sign that the forward clutch is staying applied. I stopped doing it. also make sure you have 11 check balls, pay real close attention to check ball 7 and 11. Buy Transmission Pigtail Kit for GM 4-speed Automatic 1995 to 2004 4L60e 4L80e, Wire Pigtail Transmission Neutral Safety Reverse Light Range PRNDL Sensor Switch 7-wire 4-wire Connector: Hard Parts - Amazon. just all of a sudden went out all at oncecan someone help figure this out. It would almost seem likely there is two seperate issues. Then made my adjustments from there and went up to 1bar SD OS. I'll try and remember to take a picture when I'm under the truck tonight. I am thinking I have a huge internal leak somewhere as pressure never comes up above 160 in any forward gears, and there is obviously no holding pressure in any forward gear. The vehicle will only operate in reverse. Intermittant check engine light? No CEL and no codes thrown on OBDII scan tool 4. I have no reverse and reverse and neutral seem to be… 03 2500hd 4l80e 235k miles Transmission has developed a delayed engagement (2-5 seconds) between shifting and engagement into reverse and first. Maybe eletrical for the 4th gear problem and either a direct clutch or L/R band issue for rev problem. com FREE DELIVERY possible on eligible purchases Nov 22, 2019 · Transmission Connector Kit - Neutral Safety - Reverse Light - Range (PRNDL) Switch Connector Pigtail Compatible with GM 4-speed Automatic 1995 to 2004 4L60e 4L80e WPTRK30 . Wondering what people have done with the wiring, or is the neutral safety switch and reverse lights on the column. not slipping no other problems. currently having to guestimate my fluid level as the oroginal dipstick broke and I can't find one to replace it. I looked at my original shifter and there is no wiring, and I'm going to use the linkage rods that go to the column for park etc. A i Have 98 chevy truck 3/4 ton. I believe it has a 4L80E transmission. Even in park it loaded the motor like doing a brake stand in drive. On open throttle, trans shift nice. May 31, 2009 · First of all, a 'cliff notes' since this may get long: Had transmission rebuilt, installed it, car has slightly slugish shifts through the Drive gears, but DOES shift, however I have no reverse. All worked great. De converter is correctly installed and right fluid is in the gearbox, i also have the codes 73, 81, 82, 83. 1K views 6 replies 6 participants last post by turbonator Apr 9, 2018 Jul 4, 2015 · In reverse it makes a clunk sound and you know it has shifted into reverse and it goes into reverse every time. In all other gears, it is like it is in neutral. Reverse works fine, but no forward gears at all. com Randomly lost throttle in drive and reverse. 5 TD (4L80E) reversed 2 feet and all of a sudden, felt like a fuse popped. Jun 18, 2002 · Pan was clean, next to no metal on the magnet, fluid was great. Buy ICT Billet Wire Pigtail Transmission Neutral Safety Reverse Light MLPS Switch 7-Wire Connector Compatible with GM 4-speed Automatic 4L60e 4L80e 1995 to 2004 WPNSS30: Wiring Harnesses - Amazon. Will drive in park, neutral, drive, 3, 2 and 1 The forward frictions are engaged in all 4L80-E transmission gears except reverse. I feel like it's worse when cold. the only thing that can get it into gear is rev it in neutral at about 1500 for a few minutes then itll go into any gear i want to. It has 210 lbs of pressure in all gears including reverse even though there is no reverse. You will know because it will suddenly start showing what gear you are in on the cluster. When I have a scanner on it in Park, Reverse and neutral it reads park/neutral or park depending on which PID but will read the correct 4th drive, third drive etc when in the forward gears. Sep 1, 2009 · On a mildly chilly morning, my 95 c2500 6. Also Never mix 4l80e internal parts they have alot of diffrences in the production years. I checked the fluid and it seemed fine (not burnt) and no visible leaks underneath. Oct 24, 2023 · Picked up an 02 gmc 1500hd 6. This harness only has the circuits for Park and Neutral starter relay control and Reverse lights. If you are using a shifter that does not have the option for a neutral safety circuit or reverse lights this kit will allow the use of the 2004 and newer PRNDL switch on the side of the 4L60e/4L80e. May 17, 2014 · GM Drivetrain & Suspension - Help - 4L80e swap - all gears go forward, no reverse or neutral! - Hi all, I've mostly swapped a freshly built 4L80e (with 2500 stall) into my '08 Silverado 1500 4WD. See full list on transmissiondigest. In fact, I had to drive it home backwards in reverse. Purchased a 93 2500 that did not have 4th gear or was starting to lose reverse. and the newer trans post 1998 i belive. Randall Schroeder. Jan 10, 2005 · shift into reverse, engine bogs down like under load, step on the gas --sometimes black smoke then it moves like normal, same in forward --at low speed idle drops from 500 hundred or so to 300 when shifted into f or reverse. Dec 1, 2015 · Buy 77947 - 4L60E 4L65E 4L80E, MLPS, NEUTRAL SAFETY SWITCH (NSS), 1995-2003, GM: Neutral Safety - Amazon. Low Reverse Clutch Pack- The most likely part of the 4L60E to have failed in reverse is the low reverse clutch pack 2001 Chevy 2500. 5 1ton with the 4L80. 2004 chevy 2500hd with the 4l80e. 5td 4l80e -95, but the truck slips on D, so i ordered a rebuild kit and replaced the frictions disc. Neutral Idle - 100 psi Park Idle - 100 psi Reverse Idle - 135 psi Drive High Idle - 150 psi Neutral High Idle - 110 psi Park High Idle - 130 psi Reverse High Idle - 180 psi Observable Symptom - I did this testing w/ truck on jack stands. It probably goes without saying, but if you shift the vehicle into second gear manually, it will still move. Here's the latter No Reverse Checks Cause Case (7) The rear band anchor pin is broken or the pin is not positioned. Jun 28, 2024 · 4l60e transmission, no reverse. Tags 4l60e help help help trailblazer transmission problems transmission swap. BANG! :homer: And after that the trans pulled forward, no matter what gear the shifter was on. I'm pretty sure it's the 4L80E but not positive. moves in 1 and 2 but not in D. Problem: When reverse is selected, a horrible grinding noise occurs and doesn't stop until a different gear is selected. reverse went out. Aug 29, 2009 · When this happens then the shifting valve returns. No reverse or OD. No Jun 20, 2004 · The bottom switch is for neutral safety, the top for Reverse lights. Now i dont have any line pressure when i took of the cooler lines, and it wont move. 235-85 on 16" PYO alloys. Rebuilt 4L80e transmission (I have built about 6 so far with no issues). Now if I disconnect the wire harness to the transmission the vehicle will operate now in third gear and I just did this for a 4L65 to 4L80E. Dec 23, 2019 · Line Pressure Booster Kit 4L80E-LB1. No electricity sent means no gear. Check Details. Engine braking works from 2 … read more Oct 11, 2023 · Alright guys im at the end of the line with this truck, its a 1999 silverado 4. A GM 4L60 E reaction sun shell stripped, no reverse. Jump to Latest 26K views 19 Feb 13, 2019 · Its been sitting for about 10 years pryor. Using a 60 dipstick n it's a lil long. I was never able to get my reverse lights to work, but I got everything else to work. I tried switching between 2WD and 4WD and no change there either. I also did the "25m mph in first gear" test and the result was - no compression braking. 2-3 Neutral; 3-4 Neutral; No 4th; 2nd Gear starts; Diagnosing the Elusive NO REVERSE with the 4L80-E. It now drives forward in all gears: Park, Reverse, Neutral, D! Dec 13, 2024 · Transmission full. Difference 4l4l60e no 2nd 4th and reverse. Let's see how it goes. This setup does not have a PRNDL switch due to the stand alone harness not having any wiring for it. This occurrence happens when the transmission system is damaged, and no corrective measures have been taken immediately. Jul 29, 2016 · Trans acted the same, has reverse but no forward gears at all. was working jsut I have a 2000 chevy 2500 6. No codes have throttle in park and neutral. Installed today and It moves forward in all gears including park. On a flat road it go,s a litle bit reverse. If I put it in reverse or neutral it goes forward, like it is in drive. No noises, no whining, no nothing. Unlike Dec 8, 2009 · Some vehicles can lock out reverse if there is a speed signal from the VSS during reverse selection. From diagnosing worn-out clutch packs to resolving solenoid and valve body problems, this article offers a comprehensive guide to restoring optimal functionality and ensuring the Sep 25, 2022 · The 4L80E sometimes moves to the limp mode, a self-preservation mode. Reverse seems to be takin a bit to kick in. everything worked great, tranny never slipped, never clunked, no weird noises then i broke a tranny mount. on my way out to camp all the sudden my truck starts making this awfull grinding noise. Please read carefully. A bad shift solenoid can cause no 3’rd or 4’th gear in the 4L80E Shift Solenoids Jul 11, 2024 · That said, T case can certainly be in neutral; I would think he'd place it in gear before trying to drive it but who knows. The gear will refuse to shift to reverse to protect the transmission system from further damage. Is a 2wd 4l60e inside a 1996 Impala SS. I still have forward movement in OD, D, 2nd, and 1st. - YouTube. In this video, i show a stripped input shaft of the 4L80E which caused no movement, the input shaft was replaced with one that has harden splines. Sometimes the truck stalls when stopping at a red light and it will feel like I'm in neutral. so now i am trying to figure Jan 24, 2023 · I've read, and I don't know that it's true, that downshifting on a hill is not good for the 4L80e. Also, no Sep 18, 2014 · two problems with the 4l80e one could be line pressure, the other the 80e has a fail safe that wont let the trans shift to reverse if it senses a speed of greater than 8mph. another thing, have you check the reverse boost valve in the front pump? Nov 28, 2012 · i bought a 97 trans am with the lt1 and 4sp auto with 107,000 miles. jhev ywfmuu gfl dzmaqas stmt mjuhvu wxfom qnn kof fpgdkcwr