If there is no overdrive overide button on the shift lever then you put it in D for drive 2. 34580A - 4L80E, OVERDRIVE PLANET PLANETARY, USES SPRAG WITH. Broncocarl92 145,741 views. gm 4l80-e & 4l85-e (rwd 4 speed overdrive) ill. 5 TD overheating Specialists, diesel PMD failure, FSD heat sync kit. 4L80E lost Reverse & Overdrive 4L8OE. We saw what causes this float and the damage it can create if left unchecked. today the transmission made a loud pop. The strength and reliability of a Th400 but with a lower 1st and an overdrive, perfect for a Prerunner. Running in reverse (3) minutes will give any contaminants in the transmission, converter, cooler or lines a chance to settle into the transmission pan and not be introduced to the automatic shift control part of the valve body or governor, causing the shift valves to stick. 1997 & up 4L80E's have a smaller/weaker Overdrive Roller Clutch, Why GM did this is a mystery. No O/D what so ever. 4l80e p0756. The pan had to be removed. 4L80e troubleshooting So i bought this truck, an 00 2500 GMC. Upgraded Borg Warner Governor Pressure Solenoid. 61 Specifications. The gearing to move such a heavy load is a 2. Fully push button adjustable with no magnets to align! Built in Neutral Safety Switch and Back-up Light Circuit. Overdrive (OD) clutch updated to 4-plate clutch for increased durability. Drain the tranny and remove the pan Remove the filter. -Swapped ECM as I had a spare laying around and it didn't fix it. try unhooking the battery for about 2 minutes and then see if it works. Lost reverse and overdrive. As of right now, a reverse pattern is still in development but not ready. Laptops or hand-held tuning devices are not required to completely control shift points (raise or lower when your transmission shifts), shift firmness (change from soft to hard to suit your driving style), and torque converter lock up (lock up sooner for better fuel economy). Browse our inventory now. Reset Search. This transmission shifted smooth and strong through all gears until today when it stopped all of a sudden to engage either Drive or Reverse. Have Peace Of Mind, knowing that your new 4L80E Transmission has all the Updates developed by General Motors Engineers combined with the Latest Industry Advancements providing Unparalleled OE Strength and Durability. 61 Specifications. The 4L80-E (and similar 4L85-E) is a series of automatic transmissions from General Motors. The 4L80-E uses a gear pump that is so powerful it's been know to crack the early-model 4L80-E's in half when their pressure solenoids got stuck. The gear selector is moving on the side of the transmission. The 4L60E is probably the single most popular automatic transmission currently in use by American consumers. The only aluminum torque-related parts are the clutch pistons and the overdrive piston housing. Ok, the Vehicle is a 1999 Chevy 3500 HD. Reverse Drum Wear: a 4L80-E True Story. Vehicles with GM 4L80-E and 4L85-E transmissions commonly exhibit wear in the Reverse checkball sleeve located in the 3-4 shift valve bore. I swapped in a 4l80e with circle D 3200 stall. of torque, giving it a max load capacity of 18,000 pounds. 4L80E TRANSMISSION 4TH CLUTCH HOUSING 1991 to 1998 CHEVROLET GMC TRUCK VAN See more like this 34510BAN - TH400 3L80 4L80E, REVERSE (REAR) BAND, 1965-1998, GM Brand New. 1,017 results for 4l80e transmission Save 4l80e transmission to get e-mail alerts and updates on your eBay Feed. Free Quotes/ Seven Days. Overdrive bearing section 7. We have the fastest most reliable 2004Rs in the industry. 4L80E Transmission Parts 4L80E Transmissi on OverDrive Sprag 1991-2001 fits GM. Why Would an Automatic Transmission Not Go Into Reverse? When an automatic transmission fails to go into reverse, it is generally due to the torque converter or a broken gear. Despite its name, the 4L80E is not an upgrade to its GM counterparts. The Perfect Guide for Auto Repair Enthusiasts No matter if you are a transmission repair professional, or trying to get the job done yourself at home – this guide will help you through the many issues of repairing and rebuilding the 4L60e. 4L80E Specifications. 4l80e behind a sbf Jay couldnt get the VSS to work on the AEM with the 4L80, so he had no boost controll or traction control. Posted by Regis on Monday, April 29th, 2013. 06 first gear which is good for initial take off but this makes the transmission have the widest ratio …. This transmission features a forward pattern manual valve body and includes a B&M finned deep aluminum transmission pan for added fluid capacity and cooling. (but I'm no expert): when shifting 4->3 the overdrive roller clutch keeps overrunning reverse, or any. Kit Contains (1) 1-2 A Shift Solenoid (OEM # 24230288) (1) 2-3 B Shift Solenoid (OEM # 24230289). RFE-SV453-WT. Automobile Parts and Service Toggle navigation Community Chevy Automotive Sales Inc. 080 from the overdrive apply piston (pen points), Carr can add a third clutch plate for a 33 percent increase in torque capacity. Nv1500 transmission specs. Converter Order Sheet. Despite its name, the 4L80E is not an upgrade to its GM counterparts. 00 Add to cart #48-CCV VALVE KIT, 4L80E / 4L85E CONVERTER 1991-2009 ELIMINATES LOCKUP $ 99. cept I wasnt going to sink any more money into that piece of crap…They didn't know it, but the dealer had me by the cajones since I couldn't back out of their parking spot and I wasn't going to push it out of there. Stainless steel cooling lines for 700R4, 2004R, TH400, TH350 and Power Glide transmissions. Upgraded Borg Warner Governor Pressure Solenoid. 02:1 with tighter gear splits but does not apply an overdrive for subsequent gears. Log in Sign up. com The SF-99 Servo Pin Bore Repair System In 1999 we introduced our signature line of tools. No matter what you're driving, we have the right Gm Overdrive Transmission for your vehicle. The 4T60-R kit repairs the reverse servo pin bore, preventing the pin from binding in the worn bore. Simple Shift Automatic Transmission Controller Simple Shift is the latest breakthrough in electronic overdrive transmission control. With the 4R100 replacing the E4OD in the late 90’s. There is no little clunk like usual. Overdrive Pressure Plate 4L80E-TCC. GM TH700R4 / 4L60 & Early 4L60-E Automatic Transmission. We saw what causes this float and the damage it can create if left unchecked. I pulled over and looked the situation over. another thing, have you check the reverse boost valve in. Trouble Shooting a Faulty Shift Solenoid In Your 4L80E Automatic Transmission. So my 93 1 ton with a 4l80e will not go into forth or overdrive. SK® 4L80 4L80E 1991-2002 no reverse or no forward; PERFORMANCE SHIFT KITS FOR THE HOME MECHANIC AND DO-IT-YOURSELFER. Forward and reverse in an 4l80 are hydraulic only. I had it scanned at a trannie shop but shows no codes. 4l80e trans no reverse - Answered by a verified GM Mechanic. 4L80E Overdrive Roller Clutch. An added seal compensates for variations in case I. Trouble Shooting a Faulty Shift Solenoid In Your 4L80E Automatic Transmission. dieselbombers. 4L80E Reverse Band. We assume no responsibility for damages or delays incurred once a vehicle is in a shipper's custody. Overdrive roller clutch: GM TH400 HD Rear Reverse High Performance Kevlar Band 4L80E TH-400 3L80 4L80-E Grooved. The 4L80E’s ratios from First to Reverse are: 2. See cost comparisons farther down the page. The 4L80E has a max torque rating of 440 lb. 310" Roller Elements Often also Called the black sprag type. A carry over of the C6 3 speed transmission, the E4OD and later the 4R100 provided an electronic 4 speed with overdrive transmission. FORD TRANSMISSION GUIDE AND SELECTION. This transmission shifted smooth and strong through all gears until today when it stopped all of a sudden to engage either Drive or Reverse. Two forward gears will simply leave you with a forward speed for example, in a AODE/4R70W applying the forward clutch and the intermediate(1-2 shift clutch) gives you second gear, forward clutch and direct clutch(2-3 shift) gives third gear, forward clutch with intermediate clutch and overdrive band applied yields Manual second gear. It shifts smoothly from 1-2 and it goes into overdrive. Problem started with it going into limp mode (sticking in 2nd gear) when I shut the truck off and restarted, then it would begin shifting again, with one weird exception: When going from 3rd to overdrive, the tach would rev up to around 4500 rpms and then it would drop into overdrive. Try not to run or drive the car or further damage could result. Not to mention the parts being mismachined by some idiot who can't read a caliper or drawing. Turns out TCI is a pretty well known and reputable choice. Ok, I've got a 92 GMC 3500HD bucket truck here at work with reverse gone in it, so I tracked down another used 4L80E (95) to swap it out with. Reverse is there just fine. There have been known issues reported by some vehicle owners with the electronic gearboxes GM has produced. NEW GM 4L80E 4L85E Transmission Overdrive OD 12 Roller Clutch Sprag 1991+ 930678 - $27. SC-4L80E Transmission Reconditioning Kit FULL COMPAT I B I L I T Y • Full compatibility with 1991 and up. This billet aluminum reverse servo piston assembly puts an end to failure of the OEM cast aluminum reverse servo piston. Unlike a 700-R4, the 200-4R is not prevented by its valvebody program from running in Overdrive at wide-open throttle. Anywho, lost reverse, all the forward gears are fine, fluid is normal, not foamed or burned. Weeks before this happened, problems developed where I had no overdrive, no torque converter lock-up, often had. No Movement in Reverse: Though not a common problem to see with these transmissions it is one that can occur. If you have no doubt, go ahead and skip to the next section. The 4L80E has a max torque rating of 440 lb. This includes all text illustrations, tables and charts. 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. The cars and trucks that appear at the SEMA Show serve as an indicator of where the various markets may be going—but they’re also just plain fun to look at. 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. I just bought a 93 1 ton dually extended cab, 6. We currently have 28 1970 Pickup listings on AllCollectorCars. Fits General Motors 4L80E and 4L85E 1991-2009. MegaShift™ 4L80E Wiring. See cost comparisons farther down the page. 866 669-3343. Having no reverse can be a tricky issue, especially if you happened to park against a wall. The Perfect Guide for Auto Repair Enthusiasts No matter if you are a transmission repair professional, or trying to get the job done yourself at home – this guide will help you through the many issues of repairing and rebuilding the 4L60e. Hasn't had one in a long time. 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. If your car is experiencing any of the above symptoms, you should take your car into a local dealership to have them run a computer diagnostic on your vehicle. Complete overhaul kit with clutches and steels and molded pistons. Or maybe the 4l80E and 4L60E lock up connectors are labelled backwards such that you presently have a mislabeled 4l60E lock up connector plugged in. WOW the price of the 4L80E parts are high. Includes: Mounting Hardware to fit the GM 4L80 & 4L80E automatic transmission. Forward and reverse in an 4l80 are hydraulic only. The gear selector is moving on the side of the transmission. Reverse Drum Wear: a 4L80-E True Story. Overdrive GPZ Clutch 4R100 4L80E With GPZ Clutch Pack® Module Forward, Direct GPZ (No Grooves) Low, Reverse, Stage-1™ 4L80E Stage-1™ Performance Module (1991. Direct fit for all 1997 and up 4L80E transmissions. this is a computer. Direct clutches 15. Connect some old junk solenoids so the TCM doesn't throw codes. Re: GM 4L80E Transmission Lockout Problem: leroy Black: 2-12-09 : Have 4L80E in 2006 2500 with 57,000mi. We focus on quality not quantity this is why we have so much success!. Suggestion was made by dealer that this could be caused by tourque converter. A couple of things to consider before moving on to the problems that cause the overdrive/4'th gear to go out in the 4L60E. 4L80E, Sonnax Reverse Servo Spacer Kit. The 4L80-E (and similar 4L85-E) is a series of automatic transmissions from General Motors. 5L turbo Diesel. 4l80e trans no reverse - Answered by a verified GM Mechanic. that way it will have a 1,2,3 shift, no 4th or overdrive. today the transmission made a loud pop. The front and back are tied together with welded in frame connectors. GM 4L80E/4L85E Transmission Overdrive Sprag1991-2000 Models OEM # 9306783. RFE-SV453-WT. Locate Performance Automatic dealer near you. I have a 4l80E and having trouble with the converter not staying locked up while at cruising speeds (70 to 80 mph). 00 Add to cart #4L80E-A Mag-Hytec 4L80E Deep Cast Aluminum Pan, *Relieved for. Overdrive bearing section 7. With his work ethic and dedication to the game, it's not hard to see him having success in the future. They should always be checked first if you are having a shifting problem. The 4L80E has a max torque rating of 440 lb. we stock all of your performance needs from"HEAVY-DUTY to EXTREME H / P "We have been in business since OCT. Reverse is there just fine. We see the parts that took for a successful repair. 4L80E, Sonnax Reverse Servo Spacer Kit. The 4L80E is the descendant of the "Ole Reliable" TH400 transmission. It slips in and out while on the highway. 310" Roller Elements Often also Called the black sprag type. The only aluminum torque-related parts are the clutch pistons and the overdrive piston housing. 3-4 Shift and TCC solenoid with harness. We assume no responsibility for damages or delays incurred once a vehicle is in a shipper's custody. Below we will cover the most common problems that cause reverse to fail. The gearing to move such a heavy load is a 2. On the way there I notice no overdrive?? I have the 4L80 E trans Does this sound like a mechanical problem or electrical? THANKS. The only way to retrive trouble codes is with a scanner such as Tech 2 , snap-on, otc or equivelent. With the average age of a used car now approaching 11 years, there are millions of them still in use. IMPORTANT: This modification will allow 1 st gear with engine braking at any speed; if you move the shifter into manual low at high speeds, the rear wheels will lock up. The 4L80E has a max torque rating of 440 lb. We also have the best aftermarket 4L80E 4L85E transmission controllers available. 48 first gear, 1. The tranny shifts into all gears and reverse when cold but as soon as it gets hot it won't go into OD. But sinds twoo weeks it has no reverse anymore. Having no reverse can be a tricky issue, especially if you happened to park against a wall. They both have identical or nearly identical gears, except for the addition of a fourth “overdrive” gear in the 4L80E that allows for better highway fuel mileage due to lower engine speeds at the same road speed. 48 second, 1. This is a computer controlled transmission first introduced in G. Direct fit for all 1997 and up 4L80E transmissions. 34528-01K $18. 61 Specifications. has all four gears but no lockup Has code Po894 slipping components will turn on chek engine light after a while. Turns out TCI is a pretty well known and reputable choice. I don't know if its harmful to reverse them. another good update is to use an early model reverse apply piston,which is steel,in the place of the later model cast aluminum piston. "Overdrive ratio error" means the fourth clutch is not applying; when the fourth clutch is applied, it holds the overdrive sun gear stationary which causes the overdrive carrier assembly to "overdrive" the forward clutch housing (where the input speed is measured). The least expensive online catalog for all your Gm Overdrive Transmission needs. There area few conditions that can feel like you are losing reverse, but you really aren't. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. 4L80E 1991-2006. The motor will rev up, but there is no response from the transmission. Below we will cover the most common problems that cause reverse to fail. Overdrive direct clutches 18. This billet aluminum reverse servo piston assembly puts an end to failure of the OEM cast aluminum reverse servo piston. So to summarize, no manual first engine braking of any kind. 05 - 4-spd automatic overdrive ID According to Mike Stewart of Mike's Transmissions, one of the most common problems with the AOD is its tendency to burn up the overdrive band. 2 runs out of breath quickly. Reverse Intermediate Clutch Low/Reverse Clutch/ Reverse 4L80 Air Test Selector Position Gear 4th Clutch Overrun Clutch OD Roller Clutch Forward Clutch Direct Clutch Front Band Inter- mediate Sprag Inter- mediate Clutch Low Roller Clutch Rear Band Solenoid A Solenoid B Reverse R ON Holding ON ON ON OFF Overdrive D4 1st ON Holding ON Holding ON OFF. GM 4L80-E Transmission Rebuild - Transmission Repair Here is a full rebuild video of a GM 4L80-E Transmission. I'm looking for a little info on my 4L80E trans that will not move when switched to reverse, there was a. As an aid to the. Overdrive direct clutches 18. The Official Art Carr 2004R Transmission - California Performance Transmission stocks high performance 200-4R and 700R4 Automatic Transmissions, Torque Converters, Shifters and Racing Parts. I had it scanned at a trannie shop but shows no codes. GM Products 4L80E. 4L80E TRANSMISSION 4TH CLUTCH HOUSING 1991 to 1998 CHEVROLET GMC TRUCK VAN See more like this 34510BAN - TH400 3L80 4L80E, REVERSE (REAR) BAND, 1965-1998, GM Brand New. Free shipping when your order includes this part. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. Will fit all 1991 to 1996 models if 1997 and up reverse servo cover is used. 866 669-3343. 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. So my 93 1 ton with a 4l80e will not go into forth or overdrive. 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. The GMC Sierra 2500 HD came equipped with the 4L60E transmission, 4L65E transmission and 4L80E transmission in early models. This transmission shifted smooth and strong through all gears until today when it stopped all of a sudden to engage either Drive or Reverse. 4l80e trans no reverse - Answered by a verified GM Mechanic. 4L60E / 4L80E / 4T80E CHEVY/GM EPC Solenoid, 1994-2002, NEW. This issue is caused by normal movement of the checkball within the sleeve over time. com online experience. -Swapped ECM as I had a spare laying around and it didn't fix it. I went and drove it earlier no issue went up my icy driveway in reverse and cycled all gears up to 60mph with no hard shifts or issues but the vibration at 3k still seems to be there obviously it’s not fixing itself so may try to get the boss to let me pull it in the shop after work one day this week to check it over!. If there is no overdrive overide button on the shift lever then you put it in D for drive 2. that way it will have a 1,2,3 shift, no 4th or overdrive. if you see no fluid try to drive it with the plug unplugged in reverse. Codes can be cleared by. This issue is caused by normal movement of the checkball within the sleeve over time. An added seal compensates for variations in case I. has all four gears but no lockup Has code Po894 slipping components will turn on chek engine light after a while. Drain the tranny and remove the pan Remove the filter. Shift transmission into reverse and let run approximately (3) minutes. went 1-for-1 with four runs scored, a two-run home run and three walks in Wednesday's 11 win over St. I lost reverse backing out of my flat driveway no clunk or any grinding noises, it just slipped into neutral. The motor will rev up, but there is no response from the transmission. Codes can be cleared by. 48 first gear, 1. Free shipping when your order includes this part. Install in 15 minutes. Converter Order Sheet. MegaShift™ 4L80E Wiring. I'm hoping not. This particular piece is from a 1996 4L80E from behind a 6. The first symptom was ever now and then when the tranny would downshift to pass on the freeway it wouldn't go back to O/D. Faulty Shift Solenoid - Open Electrical Circuit: A failed shift solenoid or an open/shorted electrical connection can cause delayed and erratic shift or no shifts. This is our strongest transmission offering to date. WOW the price of the 4L80E parts are high. Our Loaded Super Master 4L80E Rebuild Kit comes with not only everything you need to make your transmission stronger, but also includes all the performance upgrades you should do if you're into performance. This billet aluminum reverse servo piston assembly puts an end to failure of the OEM cast aluminum reverse servo piston. ) Order Frictions with ‚B™ prefix for Borg Warner brand, ‚R™ prefix for Raybestos brand. i am an ASE. of torque, giving it a max-load capacity of 18,000 pounds. 4L60E No Reverse Causes Low Reverse Clutch Pack- The most likely part of the 4L60E to have failed in reverse is the low reverse clutch pack. It’s Snow Plowing Season Again! Understanding 4L80-E Overdrive Roller Clutch Failure. There are no "shells" or any comparable bullshit stamped parts spinning in a 4L80-E. The 4L30-E was born !. FORD TRANSMISSION GUIDE AND SELECTION. 4l60e, 4L80E Transmission. Please ensure correct part fitment before purchasing this product. Reverse Drum Wear: a 4L80-E True Story. The 4L80E is being found in more and more high performance, race, and tow vehicles over the last few years. Posted by Regis on Monday, April 29th, 2013. E4OD was used primarily in the heavy duty applications such as the Ford Bronco and Ford F-Series. Outsmarting 4L80-E Overdrive Roller Clutch Failure. 4L60-E & 4L80-E REBUILT TRANSMISSIONS, we install the upgrade / corrections to eliminate ( reverse. 00 third, and 0. I guess you could consider it successful. First off you should check your pressures and if there good then you will need to remove the pump and check the 4 teflon o-rings on the input shaft, that is the most likely cause for revers but no forward gears. GM recommends upgrading to the newer connector and wiring harness. Overdrive direct clutches 18. 4l80e pressure test 4l80e pressure test. No it is completely gone. 4L60E / 4L80E / 4T80E CHEVY/GM EPC Solenoid, 1994-2002, NEW. 3-4 Shift and TCC solenoid with harness. As Dodge/Chrysler weren't really known for dependable transmissions during the last couple of decades, not sure how solid of an idea it is, especially with the available overdrives like a 4L80 from GM, which would make for an easier swap. 00 Add to cart #4L80E-3. We offer a variety of Gm Overdrive Transmission for your automotive needs. December 23, 2015. Direct fit for all 1997 and up 4L80E transmissions. overdrive & pump ) failures that are common with this trans. For this reason your shop is. part per no. SSDiesel Supply, GM 6. But at the time, she didn't mention the loud clunk and was not aware that she had no reverse gear. Reverse Intermediate Clutch Low/Reverse Clutch/ Reverse 4L80 Air Test Selector Position Gear 4th Clutch Overrun Clutch OD Roller Clutch Forward Clutch Direct Clutch Front Band Inter- mediate Sprag Inter- mediate Clutch Low Roller Clutch Rear Band Solenoid A Solenoid B Reverse R ON Holding ON ON ON OFF Overdrive D4 1st ON Holding ON Holding ON OFF. I'm pretty sure it's the 4L80E but not positive. DESCRIPTION YEARS QTY PART NO 4L80E (MT-1) 4 SPEED RWD (Elecrtonic Control). 0 conversions or NV4500/4L80E please enter! -no firewall mods, but moved the hole in the hump for the shifters Reverse 6. Its a Lq4 , 4l80e and a P59 ALL FROM THE SAME 05 EXPRESS VAN no segment swap needed. 48 first gear, 1. Utilizes 91-96 large overdrive roller clutch. This is our strongest transmission offering to date. It was so smooth and when I let off the throttle it actually stayed enGaged instead of dropping into neutral. So my 93 1 ton with a 4l80e will not go into forth or overdrive. Also, part of the plan from the beginning was to get a Gear Vendors unit with the 4L80E for double overdrive. This billet aluminum reverse servo piston assembly puts an end to failure of the OEM cast aluminum reverse servo piston. Reverse/neutral safety switch 13. We have 6L80E Transmissions in stock and free shipping. Once installed, the TCI® GM 4L80E Transbrake Valve Body modifies your transmission into afull manual shift, reverse pattern unit with an impressive Pro Tree transbrake feature. of torque, giving it a max load capacity of 18,000 pounds. All the shifting is. No it is completely gone. I just bought a 93 1 ton dually extended cab, 6. that way it will have a 1,2,3 shift, no 4th or overdrive. Subscribe to Our Newsletter to get Important News, Amazing Offers & Inside Scoops:. we stock all of your performance needs from"HEAVY-DUTY to EXTREME H / P "We have been in business since OCT. The 4L80E is a four speed automatic transmission designed and built by General Motors. Overdrive (OD) clutch updated to 4-plate clutch for increased durability. Probably from all the backing up from plowing. This issue is caused by normal movement of the checkball within the sleeve over time. Transmission electrical diagnosis troubleshooting help on all your transmission problems or questions. They both have identical or nearly identical gears, except for the addition of a fourth "overdrive" gear in the 4L80E that allows for better highway fuel mileage due to lower engine speeds at the same road speed. 00, plus 'hard parts', if any (Based on customer supplied core) Automatic shift transbrake valve body available as a $600 option. 00 third, and 0. is you have to run a reverse. 00 Add to cart #4L80E-3. 05 - 4-spd automatic overdrive ID According to Mike Stewart of Mike's Transmissions, one of the most common problems with the AOD is its tendency to burn up the overdrive band. of torque, giving it a max load capacity of 18,000 pounds. WOW the price of the 4L80E parts are high. Dealer states on repair order, "normal condition at this time until an update comes out". Hasn't had one in a long time. Diesel 4x4 Heavy Duty 4L80E Transmission. has all four gears but no lockup Has code Po894 slipping components will turn on chek engine light after a while. But after turning the motor off and sitting for awhile, it'd be back to normal. And it's no secret why. We assume no responsibility for damages or delays incurred once a vehicle is in a shipper's custody. 4l80e behind a sbf Jay couldnt get the VSS to work on the AEM with the 4L80, so he had no boost controll or traction control. SC-4L80E Transmission Reconditioning Kit FULL COMPAT I B I L I T Y • Full compatibility with 1991 and up. Mine is sitting behind a built GM Performance Products 502/502 that was putting out around 650 Hp. Ok, the Vehicle is a 1999 Chevy 3500 HD. I still can't believe I took it apart and put it back together and it runs so well!!!!! Thanks everyone for the help! :tiphat. The GM 4L80E 4-speed overdrive transmission is the ultimate overdrive platform to suit virtually combination that requires the strongest overdrive transmission possible. We have absolutely identified the problem as defective band lining. For awhile it would shift in O/C at around 45mph then at 50mph it would downshift into 3rd and you would have to restart the truck for it to work.