4l80e No Forward Gears Only Reverse


No reverse is very common in the 4L60E. AFL and AFL. The 4L80E has proven reliable like it's predecessor. It clunks like its in, but 100% freewheels. GM 4L80E 6-Pinion 2. It is essentially a four-speed TH400. Don't ask how or why, but I accidentally shifted this automatic into neutral and then reverse while traveling forward at 45mph. 00 WIDE 400/425/4L80E 91-98 FRONT SERVO PISTON HAS. What this means to you is the fact you are getting a quality product that meets or exceeds the OEM standards, not just a part that is taken apart and "patched". Teardown and inspect 4l60e with no forward gears. The car also started making a whirring sound while driving in forward, which is slightly alarming. The 4L80e's first and second gear ratios are much closer, which yields a much more pleasing 1-2 shift. Used a BW master kit, Superior shift correction kit, grooved kevlar reverse band, separator plate and gaskets from an HD2 shift kit & dual fed the direct clutches. Common symptoms are erratic shifting, hesitating going into gear and losing transmission fluid without a trace of a leak. A customer of mine just bought this delivery van and it has lost reverse and all forward gears but 1st. Top 10 Install Problems - Part 1 switch can include no reverse, no forward upshifts, or neutralizing when accelerating from a stop. So it seems to be stuck. Winters Sidewinder Standard Automatic Forward Pattern Th350 Shifter 157-1. Based on the OE manual transmission spline, the high-strength shaft. 4l80e no reverse. 1999 chevy tahoe 4x4 4L80E Video Class. The forward clutch is on in all forward gears only. its RWD and it has the 7. Gmc Remanufactured Transmissions. Try not to run or drive the car or further damage could. 4L80E transmission valve body valves 4L80E transmission tools Sonnax transmission parts 34994-12 4L80E low, reverse check ball retainer pin. When the drive shell fails, the results is no reverse, 2nd gear or 4th gear. 3 on 4l80e with segment swap under same OS# the transmission goes into gear fine but once it gets warm itll stall when i place it in drive. Find Automatic Transmissions with 4L80E Transmission Type and get Free Shipping on Orders Over $99 at Summit Racing! Automatic Transmission, Forward Shift Pattern. It wants to slightly creep forward no matter which gear I have selected, even reverse. Requires factory transmission computer or aftermarket transmission controller to control transmission. I'm hoping its transfer case The only reverse power had under load or empty was in 4low on level or backing up grade. My 93 4L80E lost it's forward gears yesterday, what's a likely failure point? Any chance it's electrical or certainly mechanical? Reverse works. If I drive it regularly it doesn?t happen. Insert the rear reverse idler gear thrust washer and reverse idler shaft. A shift solenoid will not cause reverse but no forward. BUS07 555C Sun Gear Shaft. SP 4L80E auto tranny install (updated as install progresses) Compliments of XCELR8 @ www. I have a 1998 Gmc 3500 cube truck and the trasmission will not go into any forward gears. I got used to it but it takes some time. No Movement in Reverse: Though not a common problem to see with these transmissions it is one that can occur. FTI Offers a wide variety of TH400 Parts including racing transmisison pumps, valve bodies, gear sets and deep transmission pans. The Sidewinder is Fail-Safe! It’s mechanically impossible to accidentally shift into reverse from any forward gear. 2-3 slide or cutloose feel at hard throttle [light throttle OK]. Must be removed and rebuilt. 4L80E transmission Reverse works ok no forward gears. That clunk gets old after a while. There is no little clunk like usual. Truck is a 99 with 221k on it now. Winters Sidewinder Standard Automatic Forward Pattern Th350 Shifter 157-1. EGR valve spring weak causing lean burn miss in engine, feels like a miss but runs great otherwise even at stall. I'm hoping not. Forward and reverse in an 4l80 are hydraulic only. The 6L80 would have big shoes to fill, with legendary predecessors like the TH400, 4L80E and 4L60E transmissions. Its been sitting for about 10 years pryor. But this isn’t the focus of the article. The 4L80E and its variants were in production from 1991-2010 and can be identified by the 17 bolt oil pan and 4 forward gears. The transmisson should be a 4L80E. The big boss needs a new transmission for his 1961 Chevrolet Bel Air and we deliver by installing the Gearstar 4L80E. No 2nd or 4th gear. Been there, done that… 1999 GMC Sierra that I got to 250,000 miles. Shop Cast Aluminium - Pans and Diff Covers. Noisy transmission No drive engagement in forward or reverse gears How to change automatic transmission fluid: Step-by-step instructions. Overall, the 4L80E is a fairly Heavy-Duty Transmission but this is one of the primary weak points. Go to select reverse however and all hell breaks loose. So it seems to be stuck. i can crank it up and go normally it shifts fine ,then come home turn it off crank it right back up and no movement at all no forward or reverse Haven't put oil in transmission and checked all linkages. org i have one forward gear its Hello @mikefromspace I'm having a problem I got a XJ12 V8 and only have. F3A This transmission is a front wheel drive 3 speed automatic. All of this extra room allows for added durability while retaining four forward gears and reverse. No reverse is very common in the 4L60E. The only way to retrive trouble codes is with a scanner such as Tech 2 , snap-on, otc or equivelent. Is there an easy fix on these trucks or should a pull the tranny and replace it with a TH400 or 700R4 tranny. Repaired for second time parts. net is the home of the Transmission Rebuilders Network offering the leading transmission rebuilder forum in the transmission industry. I'm about ready to try the swap from a TH400 to a 4L80e in my 1974 Trans Am. Description: Shifter, Mega Shifter Console, Automatic, Console Mount, Forward / Reverse Pattern, 5 ft Cable, Hardware Included, Chevy Camaro 1968-69, Kit More Details ». The 4L80E still retains the intermediate band function even with the transbrake installed, so full engine braking is retained in forward ranges. I swear it just went. If it is working, the trans would at least have 1st gear and drive the tires. PLEASE HELP! 4L80E IS LOSING REVERSE WHEN HOT Page1 - Discuss Super Chevy, Tech Talk, and Chevy Technical Discussion topics in the Super Chevy forums at Super Chevy Magazine. There were some writeups on this site on how the swap went, but nothing went too deep into the crossmember and transfer case support. So it seems to be stuck. 4L80E Performance Transmissions and Parts from PATC. The details, 40 foot motorhome and 20 foot racecar trailer. I guess you could consider it successful. is that you are in reverse but have the. The transmisson should be a 4L80E. Check out the install here!. ABS will operate same as before Traction control and ESP will not operate as there is no connection to the GM side to reduce. SHAFT SUN GEAR: 4L80E 97-98 (4. First time was due to the reverse gear disintigrating. The warranty covers the transmission only. 171A Piston Set, Overrun Clutch 91-ON 1 4L80E. The 4T65-E was available with the same chain sprocket ratios as the 4T60-E. Early 4L80E The first three speeds of the 4L80E operate very much like the TH400; the major differences come with the addi-tion of overdrive and a coast clutch for. The big boss needs a new transmission for his 1961 Chevrolet Bel Air and we deliver by installing the Gearstar 4L80E. Cooler Transmission oil gives a more reliable, consistent shift under racing conditions, and prevents transmission damage under extreme towing conditions. This will include paddle shifters from Twist. The transmission works great in all forward gears but it is very erratic when put. I had the tranny rebuilt right when I bought the truck and had no idea it had a shift kit. if you see no fluid try to drive it with the plug unplugged in reverse. A shift solenoid will not cause reverse but no forward. 1st and 3rd only, no 2,4 or R: Sunshell is fractured or splines are sheared off. This weak link is prone to breakage while enduring the repetitive cycling that occurs in plow truck applications, when the boost valve has worn or when the pressure spikes. Any thoughts ?. Even placing it in 4WL it still hardly wants to move. Performance Transmission Bands from PATC for GM, Ford and Dodge. I can handle getting these assemblies out and changing them, no worr. The following week we took a vacation and drove about 800 miles. No 2nd or 4th gear. Common symptoms are erratic shifting, hesitating going into gear and losing transmission fluid without a trace of a leak. I am having a problem with my '96 GMC Sierra SLE with a 5. A customer of mine just bought this delivery van and it has lost reverse and all forward gears but 1st. no reverse and even gears. If it lost reverse and forward at the same time it's not likely a hard parts very common for the reverse band to fail on the 4L80E. Reverse requires more pressure than any forward gears and also makes more due to the reverse boost function. have checked fuses and relays, I think that it is a 46 transmission not for shure seems a lot of people are having trouble with these. If the transmission cooler has evidence of transmission hard parts failure, it must be replaced. Haven't put oil in transmission and checked all linkages. 45mm Orifice). Luckily I didn't force it to get home otherwise there'd been more damage. I replaced my 4l60e with a 4l80e. The transmission has gear ratios that keep the engine in its powerband through a range of vehicle speeds, so you can accelerate from a stop, as well as cruise at 65 mph on the freeway. Cause: two things make this transmission back up: one the reverse input clutches, can be wiped out due to bushing wear and ring damage on stator, second is low reverse clutches wiped out. The cvt transmission comes with one year standard warranty, ready to install !. Both will result in undesirable shifting behavior. This is our strongest transmission offering to date. 4L80E, Sonnax Reverse Servo Spacer Kit. 4L80E transmission valve body valves 4L80E transmission tools Sonnax transmission parts 34994-12 4L80E low, reverse check ball retainer pin. Repaired for second time parts. No reverse only idle power available on flat or inclined surfaces only. * Accumulator seals -- Replace these seals while you have the reverse servo piston removed from the transmission and in your hand. Would the ignition switch keep it from moving sometimes. The 4L80E and its variants were in production from 1991-2010 and can be identified by the 17 bolt oil pan and 4 forward gears. No electrical takes place at that point. 4L80E transmissions are designed for use on longitudinal engines and has four forward gears. Designed for longitudinal engine configurations, the series includes 4 forward gears. 4L80E transmission bonded rubber clutch drum pistons 4L80E transmission bonded rubber clutch drum piston kit 46952 4L80E Transmission forward clutch, bonded. 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. 2-3 slide or cutloose feel at hard throttle [light throttle OK]. TOOL03 FourthClutch Piston Seal Protector & Installer Kit Part No. However, it seems to have no low gear and no 4th. Transmission fluid not only keeps the transmission's many moving parts properly lubricated, but it prevents the unit from burning itself up, by providing much-needed cooling. Went away for a long weekend started up went in gear, no problem. However it will move in reverse. I went into reverse, but when I hit the gas, I heard a loud pop and a whine that died out over about 4 seconds. It wants to slightly creep forward no matter which gear I have selected, even reverse. So it seems to be stuck. maximum gross vehicle weight limit. The 4L80E has proven reliable like it's predecessor. The forward sprag can also be a wear item, and should be available. If you’ve noticed leak spots on your driveway or garage floor, lay down cardboard under your car in the front and middle to determine if they’re active leaks. I replaced it with a 2000 model 4l80e only changing the frictions, a few bushings and rear shaft since the 2000 came out of a 2wd. 97-ON 1 4L80E. The THM 4L80-E is a fully automatic rear wheel drive transmission. Need a little advice on a 4L80E repair. The transmisson should be a 4L80E. This is a discussion on 4l80e no reverse within the Automatic Transmission forums, part of the Drivetrain category; i Have 98 chevy truck 3/4 ton. This clutch pack can be totally omitted from the transmission and the feed hole plugged and you would still have 1st gear forward range, you just would not have any engine braking in 1st gear. Average repair cost is $2,320 at 90,000 miles. 1999 chevy tahoe 4x4 4L80E Video Class. You will need to use your original bell housing and extension housing, but the transmission will have the appropriate output shaft for your application. This is my how-to for swapping any GM transmission into a 4th gen Ram 1500 that currently has a 545/65rfe. The people with no reverse might appreciate it though. These transmissions are really simple inside There are only about 9 little tiny pez shaped pieces/springs. This weak link is prone to breakage while enduring the repetitive cycling that occurs in plow truck applications, when the boost valve has worn or when the pressure spikes. Transmission Help - Lost all forward gears but still have reverse Early 1999 4x4 w/ 215,000 and auto (4R100). Hasn't had one in a long time. I'm 92% sure it's the shift kit. 4L60E No Reverse Causes. Top 10 Install Problems - Part 1 switch can include no reverse, no forward upshifts, or neutralizing when accelerating from a stop. Since I had all forward gears left, I thought about limping home and finding a rebuilder, but in the end I concluded that it was just not possible to hitch up to an 8500 lb TT with no reverse, especially when the terrain slopes away from the front of the TT. According to the instructions I had to remove a pin for the 4l80e that gives it an extra ratcheting gear due to being a 4 speed Interestly, I had this same shifter with a reverse pattern TH400 a few years ago but it's been so long I don't remember the details. SHAFT SUN GEAR: 4L80E 97-98 (4. I purchased the transmission, TCU and harness used from a local source. General Motors introduced the 4L80E automatic transmission in 1990 to replace the popular Turbo 400 workhouse in heavy duty trucks, vans and SUVs. 1st and 3rd only, no 2,4 or R: Sunshell is fractured or splines are sheared off. I have a 1995 Chevy 3500 dually. Warranties for a used transmission is only 30 days, 60 days, 90 days or 6 months. As the reverse linkage inside the transmission wears over time, it fails to engage the reverse gear deep enough with it's mating sleeve/slider gear. 4L80E transmissions are designed for use on longitudinal engines and has four forward gears. It is an evolution of the Turbo-Hydramatic 400, first produced in October, 1963. TCI® Full Manual Valve Bodies allow for quicker shift timing and the ability to run higher line pressures than with an automatic shift. I had the tranny rebuilt right when I bought the truck and had no idea it had a shift kit. Home / Course / LBT-315 2017 ATRA Technical Seminar. The forward sprag can also be a wear item, and should be available. PIS08 172B Piston, Forward Clutch (Bonded Lip Seal) 97-ON 1 4L80E. The car is a well-maintained 2007 Chevy Cobalt LS automatic with 84K mi. The quicksilver only works with 3 or 4 speed transmissions. Started up 3 hours later and no problem Two months later started it up no gears would engage. 3 on 4l80e with segment swap under same OS# the transmission goes into gear fine but once it gets warm itll stall when i place it in drive. I'm hoping not. I know the shifter is going to the reverse position correctly as the reverse lights come on. The direct clutch is used in 3rd gear and also for reverse. Low Reverse Clutch Pack- The most likely part of the 4L60E to have failed in reverse is the low reverse clutch pack. I am assuming its in limp mode because, the truck has reverse and 1 forward gear (2nd). 3 lt Question: transmission will not shift into drive and overdrive checked fluid OK i think a shift solenoid tranny is a 4L60-E tell me what else to check there is a check engine lite on do not code for transmission valve or shift solenoid answer my question please. I too have only had Toyota, I am now sorry I bought this. Actual: P,R,N,D,3,2,1 What it is showing on the dash: R,R,N,D,3,2,1. Tags: 4L80E, 4x4, buggy, full manual valve body with reverse shift pattern, Hyromatic Turbo 400, TH400, Transmission, turbo 400 2 Transmission: It's the thingy that goes between the motor and the driveshaft that transmits the turning motion of the engine's main output into different speed turning motions at the drive shaft. The motor will rev up, but there is no response from the transmission. I purchased the transmission, TCU and harness used from a local source. The electrical system which includes the module, will go into a default mode if there is a failure with it (set codes). But at the time, she didn't mention the loud clunk and was not aware that she had no reverse gear. light duty trucks for 1991. If the transmission is subjected to heavy use, an upgraded, full-complement roller forward sprag is strongly advised. Any thoughts ?. 4L80E Transmission Problems: Dan Howard: 6-5-05 : My motorhome will not move when put into gear. Cooler Transmission oil gives a more reliable, consistent shift under racing conditions, and prevents transmission damage under extreme towing conditions. One of its lesser points is the cast aluminum reverse servo piston. I'm hoping not. Learn what to expect and fix it fast if and when you have a problem with a bad sprag in the torque converter. I will post when I get to that stage. All forward gears seem to work ok. Now you can afford a pre-tested 4L80E transmission for only $2249. We start with only late model cores for our performance line and application based core for our heavy duty line (Heavy Hauler). We have all types of Car Transmissions online. Is there an easy fix on these trucks or should a pull the tranny and replace it with a TH400 or 700R4 tranny. There also could be a hydraulic failure internal with transmission creating only the forward gears circuit to operate. The Sidewinder can be installed on any street, strip or off road transmission. Posted to GM Transmission on 8/8/2007 7 Replies. Forward clutch housing. 4l80e no reverse. It shows the correct orientation of the front reverse idler gear’s forward thrust washer. Completely silent. But at the time, she didn't mention the loud clunk and was not aware that she had no reverse gear. one morning at the shop where i work i did a tranns flush and new filter and pan gasket. 4L80E is a pretty tough transmission mechanically. All was running fine but one day started it up and the vehicle won't hardly move unless I press the pedal to the floor. YEARS: 1989 to 2008 4L80E transmissions. 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. 4T65E No movement D and 3 ranges only No Movement with shifter in "Drive" or "3" range: This problem has really surfaced in the past few years with the 4T65E transmission and will catch you off guard for seemingly no reason. Doctor Steve of Doctor Steve's Transmission Clinic told us, "There isn't another transmission that has had the same design in production for 50 years!" These are four-speed transmissions outfitted with four forward gears and one reverse gear, are electronically controlled, and have a 25-percent overdrive gear. 4L60E common problems / failures. The only clutch that has to come on for 1st gear to work is the forward clutch. My car, a 2000 (2001?) Chevy Blazer won’t go into reverse as of 2am last night. The 4L60E is an automatic transmission with electronic control (E), 4 forward gears (and 1 reverse), longitudinal rear-wheel drive, and a 6,000 lbs. No codes are set for transmission or engine and these were read at idle and at 25mph. TOOL04 Hydraulic Transmission Tester Test the transmission with fluid under pressure, the Hydraulic Tester. Sudden grinding noise with no prior warning primarily in 2nd gear, behavior in reverse may be abnormal; sunshell is fractured. What's the verdict? Reverse gone and shifting problems unless it is low on fluid it is a dead duck. has a 454 with a 4l80e tranny. The forward clutch is always fed with uncut line pressure in first and second gears, and originally is effected by cutback in third gear. 6L80E Transmission, Quality rebuilt at New lower price. Find Automatic Transmissions with 4L80E Transmission Type and get Free Shipping on Orders Over $99 at Summit Racing! Automatic Transmission, Forward Shift Pattern. Big job but totally worth it. Our Process: All of our transmissions are fully remanufactured and are held to the highest and strictest industry standards. after towing the vehicle h … read more. I am having a problem with my '96 GMC Sierra SLE with a 5. If the transmission is subjected to heavy use, an upgraded, full-complement roller forward sprag is strongly advised. She talked to a mechanic at work and he was thinking it might need a tranny fluid and filter change. Alright well normally I can feel my truck shift into drive or reavers but it's not but soons u put it into revers or drive or 1or 2 all it does is the rmp run up to around 2 rmp with out pushing gas peatl and when u do push gas nothing acts like it's in park or nutrule n sorry about my spelling it sucks I can't spell good but I can sure fix anything if I know the answers and where to start. Why does an auto transmission work fine in drive but slip badly in reverse? That's a. Reaction shell gear stripped. Otherwise if you stop moving it looses reverse and the motor free revs like in neutral. Fluid is full and clean. The overdrive roller clutch holds power for all forward gears in the 4th gear shifter position (if it was broken, you would never have 4th gear, reverse, or any forward gear with the shifter in the D4 position). Here is where it gets tricky. I always shut it off in a forward gear anyway, then start it up in the same gear. The vehicle dealer is one of minority staying people in America that you still have to routinely bargain with. This weak link is prone to deteriorate while enduring the repetitive cycling that occurs in plow truck applications, when the boost valve has worn or when the pressure spikes. Other benefits are less harmonics in 1st and 3rd gears and reduced wear between the drum and center support. Would the ignition switch keep it from moving sometimes. By 1700 rpm problem disappears. having a spare never hurts. Insert the rear reverse idler gear thrust washer and reverse idler shaft. With a 4L80E transmission. Not sure exactly what this "unsticks", but I had a TH400 that after rebuild wouldn't go into 3rd gear a couple of times. Cause: Likely problem here is the end of the park rod is breaking and its holding the truck in park still. Now that I put it back in the truck reverse works perfectly but all forward gears bog down like the transbrake is holding it back. The forward gears / OD work fine with no slipping and I even pulled my camper last weekend (it was a bear to back the truck up to hitch it!). Maintain your transmission and use the best parts, and you’ll get many miles of dependable service. Would the ignition switch keep it from moving sometimes. I've done a little bit of a research and collected some "no reverse" information here for you. Completely silent. Its been sitting for about 10 years pryor. 4L80E transmissions are designed for use on longitudinal engines and has four forward gears. Oh, and on this 70 failure I lost all forward gears. GM 4L80E / 4L85E Transmission Overview. This manual can be used in collusion with any type of scanner utilized in retrieving these codes from the computer. Doctor Steve of Doctor Steve's Transmission Clinic told us, "There isn't another transmission that has had the same design in production for 50 years!" These are four-speed transmissions outfitted with four forward gears and one reverse gear, are electronically controlled, and have a 25-percent overdrive gear. It caused an easy couple thousand dollars damage and damn near killed me. 4L80E Transmission Problems: Dan Howard: 6-5-05 : My motorhome will not move when put into gear. 1st and 3rd only, no 2,4 or R: Sunshell is fractured or splines are sheared off. This is a great collection of pages to print out and put in your catalog rack or in a seperate binder. April 02, 2008. It is an evolution of the Turbo-Hydramatic 400, first produced in October, 1963. This photo was taken prior to the installation of the front reverse idler gear on the mainshaft assembly. Hard coated to extend pump life. 171A Piston Set, Overrun Clutch 91-ON 1 4L80E. 97-ON 1 4L80E. i can feel it go into reverse but the truck wont move, every once in a while it worked. 45mm Orifice). Does not fit 1997 and up center lube transmissions. The warranty covers the transmission only. 3 4x4 drove it about 3 mi yesterday morning, stopped at a stop sign and went to go and nothing. Performance Transmission Bands from PATC for GM, Ford and Dodge. Reverse WORKS Drive DOES NOT WORK 1st gear DOES NOT WORK 2nd gear DOES NOT WORK When I pick Drive, 1st or 2nd with the select lever, I hear nothing. Designed for 2 and 3-speed automatic transmissions in both forward and reverse valve body shift patterns Detent activation is controlled by a chrome-plated trigger contoured to fit comfortably into the driver's hand. The 6L80/90E transmission consists of five clutch sets (1234, 35R, 456, 26 and LR), a planetary set, and a low clutch sprag, which provides six forward gears and reverse. 4L80E diagnosis of reverse leads to discovery 4R75-E Transmission with No Reverse - Transmission Repair GM 4L80E reverse servo pin measuring tool how to also works on TH. Went away for a long weekend started up went in gear, no problem. No noises when cruising at 10 mph in any forward gears. Take for example the common 4L60E: “4”means that it has four forward gears. 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. Will fit all 1991 to 1996 models if 1997 and up reverse servo cover is used. Reverse works perfectly. the way it feels is like very weak reverse (when in neutral + t-brake) and no t-brake function when in first. I have a 1985 M998 Humvee with TH350 transmission troubles. Cause: two things make this transmission back up: one the reverse input clutches, can be wiped out due to bushing wear and ring damage on stator, second is low reverse clutches wiped out. No closing cost reverse mortgage plans are back in 2016, learn more about this unique opportunity and potentially save thousands with our new $0 financed closing cost plans. TCI 274501 Transbrake Kit for 4L80E (97-06) made by TCI Automotive, for as low as $631. is that you are in reverse but have the. 57 Second Planetary Kit; TCI GM 4L80E Includes Sprag Steel Drum Assembly Kit; TCI GM 4L80E KEVLAR® Reverse Bands; TCI GM 4L80E/4L85E 2 Quart Extra Capacity Cast Aluminum Deep Transmission Pan. New TH400 reverse pattern manual valve body with engine braking now available! Hughes Performance is now offering a full manual valve body with reverse shift pattern and full engine braking in all forward gears under part number HP2211EBR for the TH400 transmission. I'm about ready to try the swap from a TH400 to a 4L80e in my 1974 Trans Am. PIS08 172B Piston, Forward Clutch (Bonded Lip Seal) 97-ON 1 4L80E. I have a HMMWV with the 4L80E that has no forward I have a hmmwv with the 4L80E that has no forward or reverse - Cars & Trucks question. I'll be calling them in the morning. electronic overdrive automatic transmission. No pressure rise forward, limited to 130 in reverse. Typically, this transmission is found in the heavier duty trucks and vans; mostly the 2500 and 3500 series. Even placing it in 4WL it still hardly wants to move. 4L80E Transmission Problems: Dan Howard: 6-5-05 : My motorhome will not move when put into gear. Construction. The shift pattern is controlled electronically with two solenoids that recieve a ground signal from the Powertrain Control Module (PCM). do tou have any thoughts on what i can do to fix the problem. SSDiesel Supply, GM 6. i could take off and it would take a bit to grab,when it grabs,i'm ok till i take it out of gear,then i have to start over againg and nurse the trans till it grabs again. 4th and reverse gears. Gm 4L60E transmission technical information. 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. Discuss Transmission Only Works in Reverse - ATF Smells in the alt. It is an evolution of the Turbo-Hydramatic 400, first produced in October, 1963. I don't think you really need a lawyer. This weak link is prone to deteriorate while enduring the repetitive cycling that occurs in plow truck applications, when the boost valve has worn or when the pressure spikes. Warranties for a used transmission is only 30 days, 60 days, 90 days or 6 months. TOOL02 Forward Clutch Piston Seal Protector & Installer Kit Part No. You will need to use your original bell housing and extension housing, but the transmission will have the appropriate output shaft for your application. Overall, the 4L80E is a fairly heavy-duty transmission. Re: no reverse 4l80E: Brandon: 6-17-09 : 92 GMC 2500hd good forward gears no reverse reverse gear went out with a sudden jolt and when ever I shift it into reverse it rocks the cab but doesn't stay in reverse. I'm pretty sure it's the 4L80E but not positive. still have all forward. 4T65E No movement D and 3 ranges only No Movement with shifter in "Drive" or "3" range: This problem has really surfaced in the past few years with the 4T65E transmission and will catch you off guard for seemingly no reason. Edit: might be an electronic problem since the hot fluid warning came up on the DIC, or valve body problem. 4l80e only want to go forward even in neutral! forward! even in neutral! has NO reverse at all. No Reverse No 4th and No 5th No and/or Slow Engagement 5R55N/W/S Flow Control Valve Delayed Engagement No Movement No Rear Lube Tube Delayed/Lack of engagement Forward and Reverse Pump Noise MIL ON or No Shift After Service Code 28 and P0705 #8 Thrust Washer Removed No TSS signal/B Clutch Drum Change Ticking Noise in P&N at Idle No 3rd or. 26,000 lbs 15 1/2" x 10" x 3/4" Transmission Oil Cooler kit. No prob, until a 17 below day, when I warmed up the car for 20 minutes. 4L60E 4L80E E4OD 5R55S/N/W A500 A518 A618 Transmission Rebuild 2 -New Reverse Input Clutches-New Forward Clutches. I installed a gauge into a port from the charge pump on the back of the HST per the manual, spec is somewhere between 3300-3800 psi. Must be removed and rebuilt. The transmisson should be a 4L80E. Go to select reverse however and all hell breaks loose. This manual can be used in collusion with any type of scanner utilized in retrieving these codes from the computer. A shift solenoid will not cause reverse but no forward. If the transmission filter becomes plugged due to debris, it can make a whirring noise. one morning at the shop where i work i did a tranns flush and new filter and pan gasket. The 4L80E and its variants were in production from 1991-2010 and can be identified by the 17 bolt oil pan and 4 forward gears. 6L Twin Turbo 245 projects & restorations.