4l60e Transmission Problems No Forward Or Reverse

My son drove the truck to the store, and it lost all gears forward and reverse. He just finished putting a 4L60E in my '97 GMC Sierra Z71 yesterday. 4l60e transmission All kinds of car parts in Florida at AmericanListed. If transmission now has 2nd gear starts, there’s no problem with the band or servo! This leaves either a defective shift solenoid “A” or a solenoid over feed problem. 7 engine all forward speeds work good. There is a lot that can get messed up in the 4L60E. If the transmission in your truck is a GM 4-speed OD 4L60E, then it is electronically controlled, but other than that it is nothing fancy. Dealer did a rebuild under the powertrain warranty. SUV has upgraded transmission that had a supposedly better model "front planet" part per GMC transmission specialist. With these cars (Chryslers especially) if the shift control computer gets a bad sensor value, or if it detects a problem with the transmission, it will put the transmission into a VERY obvious limp home mode!!! You will have a normal reverse gear, but in any forward range you will have second gear only. Below is a list of the weak points in a 4L60E transmission. the automatic transmission is much more complicated than a standard transmission because everything has to. This reduced clutch pressure causes slippage and burn-up. On the low-reverse boost valve, measure the long valve land for size. Now, the vehicle has over 130K miles. The BIGGEST problem with the 4L60E is the huge lack of knowledge and qualified builders. The following table illustrates the hardware logic required to shift gears in the 4L60E. It is possible to remedy a fluid problem by removing the check ball from its cage in the case in the rear of the trans may help (must remove valve body), or adding a high-viscosity additive such as Lucas Transmission. The problem I am having is that it slips in reverse but only when it is hot. but the fact the transmission was run for a period w/o fluid is troublesome. It wants to slightly creep forward no matter which gear I have selected, even reverse. Didn't notice that the valve body needed new gasket and check balls which were included with the kit. Can feel transmission engage in all but Reverse. No signs of transmission issues before this. J 23327-1 Forward Clutch Spring Compressor (Bridge) J 34627 Snap Ring Remover and Installer J 36850 Transjel Lubricant 45 M. No 1st, no 3rd or 4th. Problem is, I only have second gear and reverse now. I read a list that said my 2010 Sierra had a 4L60E but it is in fact the 6L80E - if you have 6 gears, you almost definitely have this transmission on a 1500 truck from this era (the heavy duty trucks have a 6L90E). With these cars (Chryslers especially) if the shift control computer gets a bad sensor value, or if it detects a problem with the transmission, it will put the transmission into a VERY obvious limp home mode!!! You will have a normal reverse gear, but in any forward range you will have second gear only. Chevrolet Traverse Transmission Problems. Find helpful customer reviews and review ratings for 4L60E 4L65E Transmission Forward and Reverse Abuse Valve Kit at Amazon. 4L60E 1995 4X4 TRANSMISSION 5. The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. you can determine which with simple test: drive forward and shift up to say 2nd or 3rd gear, not above 20mph max! take foot off accelerator and pull shifter into. Does it have all forward gears? Here is the list of probables for No reverse, first chart is for 4L80E trans, and second for 4L60E. We incorporate all the updates and modifications to compensate for the problems and issues they were born with from the factory. Buy 4L60E 4L65E Transmission Forward and Reverse Abuse Valve Kit: Valve Body Kits - Amazon. I've read post about the code 1870, but I have had no engine lights, or any problems at all, before tonight. The 4L65e transmission that usually sits behind the LQ9 in its truck applications is not the best suited for this job. We may have to pony up the big bucks form transmission control. If the transmission in your truck is a GM 4-speed OD 4L60E, then it is electronically controlled, but other than that it is nothing fancy. This includes a new torque. Looking for some insight on what has gone wrong with my transmission. My transmission had no metal in the pan after. During the road test, the transmission should make 2nd gear starts in all forward positions. 4L60 was released in 1992 while the electronic version of this popular transmission was released around 10 years later. if so might have it in wrong. Below is a list of the weak points in a 4L60E transmission. Sonnax GM 4L60E Transmission Pinless Forward Accumulator Piston 4L65E 4L70E 4L75E $ 18. 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. 42 gear The trans shifts great in all forward gears, no codes, and locks up the torque converter as it should. After I get home I realized reverse is gone!! The fluid level checks out fine, I just had the trans flushed, with new filter, two months ago. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove valve body), or adding a high-viscosity additive such as Lucas Transmission. Sonnax 4L60E Transmission Pinless Billet Forward Accumulator Piston GM 4L65E 4L70E 4L75E $17. Lets first talk about the difference between a 4L60, and a 700-R4. The 4L60E and its variants were in production from 1992-2013 and can be identified by the square 16 bolt oil pan and 4 forward gears. This problem is the NUMBER ONE most overlooked issue by other rebuilders. or possible pump, the pumps wave a powder metel vane setup that crackes and brakes. If I go from reverse to drive without the brake I can head something clicking inside - fluid never got hot, I've got a giant filter and cooler on the front of the truck. it doesn't jump when it's put into D or R and it generally feels a lot better to drive. GM 4L60E transmission Specs. Now that's out of the way, let's show you a step by step 4L60E transmission rebuild. If you are able to remove and reinstall your 4L60E transmission but do not want to take on the job of rebuilding it, you have come to the right place. Drivability problems. Just to clarify above, in an automatic tranny, reverse uses the same clutch pack as one of the forward gears, so reverse is not a "special function" or "separate gear" as some imagine. I read a list that said my 2010 Sierra had a 4L60E but it is in fact the 6L80E - if you have 6 gears, you almost definitely have this transmission on a 1500 truck from this era (the heavy duty trucks have a 6L90E). I have a 2000 Ford Escort ZX2 Automatic transmission. There is a big defect and gm has done nothing to fix the problems to all the gm owners. The speedometer works… and I can drive around in 1st or 2nd gear with absolutely no slipping at all. I did back it all the way home in reverse with no problems. A common question regarding the 4L60E is, “what upgrades do you recommend while I have the transmission out, and what can I do if I don’t want to take the whole thing apart?”. 4L60E 4L65E Performance pack contains a. 3L V6 engines. I have kind of a very similar experience going on right now. The BIGGEST problem with the 4L60E is the huge lack of knowledge and qualified builders. If the pan looks good, and the fluid looks clean, than it’s likely not going to be the low reverse clutch causing the problem. Has the transmission lost reverse? Has it also lost 2nd gear and 4th gear (overdrive)? If those are the problems, suspect that the drive shell has broken or has stripped out splines. Hold the brake for 10 seconds. D engages the overrun clutches. More Information. It's a rwd model. 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. I just bought a used trans from someone it had 189xxx miles on it and it won't shift past 2nd in od. Table 1: Search queries for www. 9 times out of 10 when a 4L60E loses reverse it's due to the failure of the reaction sun shell. OD 1st, 2nd, and 3rd b. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove valvebody), or adding a high-viscosity additive such as Lucas Transmission. but apperantly i was a lil to happy a few days ago. The only possible failure there is the VSS causing no 1st and no speedo. Why Will My Car Go in Reverse But Not Forward? by David McGuffin If you are driving an automatic transmission vehicle and it can only go in reverse, you may have a serious transmission issue that can only be solved by a mechanic. K123900S $ 615. manual 1st only c. I even reseated it again with the transmission assembly lube. circuit and read tach – Should be 200-300 rpm gain. I only offer the transmission rebuild service. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove valvebody), or adding a high-viscosity additive such as Lucas Transmission. External cooler. The 4L60E and its variants were in production from 1992-2013 and can be identified by the square 16 bolt oil pan and 4 forward gears. Dragging brakes. 4L60E Modifications. I took it back when the light first came on and the transmission shop reworked the valve body, it did not fix the code, they ordered another valve body just had it put in today. Kits Forward and Reverse Manual Valve Comparison. That supposedly superior "front planet" split into (2) parts inside the transmission although it is one molded piece. These need an upgrade when putting more than ~300 horsepower through a 4L60E: Input drum Overrun clutch hub Output shaft. No previous signs of slippage, hesitation, stalling or lack of power whatsoever. The pump stator has one of the most important jobs and that is to hold the shaft steady while the input drum assy is turning, anywhere from idle to 5500 rpm (stock vehicles). Looking for some insight on what has gone wrong with my transmission. 4L60E no shift to 3rd beyond 4. If you overheat a transmission bad enough, you most definitely will be rebuilding that transmission and torque converter. Reverse failure is a somewhat common problem, and the forward gears are next. The 4L60E naming also indicates a lot about the transmission. Information on Gear Ratios, Overall Length, Input Shaft, Weight, etc. Took it back to dealer and they couldn't replicate the problem. and for the tranny shops saying no known problems , thay are full of s#%t and were blowing smoke up your u know what. The problem is internal to the trans, and there are several possibilities. It is an evolution of the Turbo-Hydramatic 700R4, originally produced in 1982. basicaly you are looking at having the tranny rebuilt. Clutch, Transmission, Differential, Axle & Transfer Case - 4r70w no forward gears, only reverse. stock 6 clutches), Corvette servo, and a deep pan with a drain plug. There is a big defect and gm has done nothing to fix the problems to all the gm owners. TCI automotive has heavy duty clutchpacks, servo bands and the sun gear. To see how frequently Chevrolet Traverse problems occur, check out our car reliability stats. The 4L60E uses solenoids and electronic actuators to control the clutch, valve body, and bands to allow for shifting between gears. sorry for talking so much , but i really need help on what the problem is with the 4l60e transmission, any help would be greatly appreciated ! 4l60e, goes forward to 3rd no 4th no REVERSE ! any help would greatly be appreciated. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. No? The 3-4, overrun and forward pistons are new. 700r4 Reverse only, no forward gears. To add to the No reverse, my first gear is slipping only when I let off the gas pedal. With these cars (Chryslers especially) if the shift control computer gets a bad sensor value, or if it detects a problem with the transmission, it will put the transmission into a VERY obvious limp home mode!!! You will have a normal reverse gear, but in any forward range you will have second gear only. If "No Reverse" is still present during the test, the transmission must be removed for inspection to make sure that there is nothing in the direct clutch drum (remember, there are two separate apply areas for reverse versus 3rd and 4th gear in the direct clutch drum) and that the band is properly clamping on the drum to hold for reverse. The only real difference is the name. Going down the road all the sudden I have no forward or reverse gears exactly like mychevz71. 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. On the 4L60E make sure you always us a AC Delco hardened shell when rebuilding the transmission. It shifts through all forward gears with no problems and even when it's hot I still have engine braking in manual 1st. Slow, slipping or no reverse: "lo-reverse" clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. There is a big defect and gm has done nothing to fix the problems to all the gm owners. What would you do to improve our website? We're always looking for ways to improve JEGS. This remanufactured 4L60E Monster Transmission comes with a matching torque converter, ready to install! This Monster 4L60E is rated for engines producing up to 650hp/600tq The Monster 4L60E is ideal for vehicles that are powered by engines with performance upgrades. Slow, slipping or no reverse: "lo-reverse" clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. this will. At a minimum, the existing forward sprag should be disassembled and inspected closely for roller and race damage. Kit raises clutch pressure slightly to prevent slippage and burn-up, an advantage for heavy-duty, plowing or repetitive forward-reverse maneuvers. When the vehicle sits overnight or a long time, fluid in the torque converter drains back into the pan area of the transmission. These transmissions are tough and built to handle whatever you dish out. 9 times out of 10 when a 4L60E loses reverse it's due to the failure of the reaction sun shell. If I go from reverse to drive without the brake I can head something clicking inside - fluid never got hot, I've got a giant filter and cooler on the front of the truck. I just bought a used trans from someone it had 189xxx miles on it and it won't shift past 2nd in od. 4L60E Modifications. I've read threads and multiple forums but am unable to determine what could be the possible trouble with my 4l60e sitting in my 2002 4x4 GMc Sierra. Now that's out of the way, let's show you a step by step 4L60E transmission rebuild. 700R4 / 4L60 / 4L60E, REVERSE INPUT DRUM, 3/1987-UP NO CHECK BALL, LARGE FEED HOLE $ 59. TIME TESTED • INDUSTRY TRUSTED Transmission Report Volume No. I have a 2000 van with the 4l80e, no forward gears but reverse works. Corrective actions. Reverse but no Forward Gears I have an 01 2500 4x4 290K no Prior Transmission issues before this. Move the selector lever in position R and drive with partial load 20 m / 70 ft reverse, then brake to standstill. The 4L60E naming also indicates a lot about the transmission. In a pre-1987 700R4 - 4L60 trans a larger low-reverse boost valve will hold off the auto upshift to 2nd gear while the shifter is in manual 1st gear. May also have worn boost valve. To see how frequently Chevrolet Traverse problems occur, check out our car reliability stats. My son drove the truck to the store, and it lost all gears forward and reverse. New sunshell fixed our no reverse problem we also got our second gear back after the rebuild. one morning at the shop where i work i did a tranns flush and new filter and pan gasket. Once installed into the 700R4, the output side of the 700R4 looks identical to a 4WD TH350 that is being replaced. This is also a pretty common issue with the 4L60E. This plug is used in two locations in the valve body: to separate the forward abuse and low overrun valves, and to separate the reverse abuse and 3-2 downshift valves. I am not a transmission rebuilder, just simply a home mechanic saving money I take no responsibility if you do this yourself and stuffup. 4l60e shifting problems: transmission is 4l60e Problem 1994 Z71 4L60 drives forward in 1st, 2nd no 3rd or od no reverse what the dude i bought it from said. My transmission on my 93 sierra has 1st 2nd and D. This includes all text illustrations,. My dealership has record of this. Our Pro Race Series transmission is the finest built street/race automatic transmission in the industry. When put in reverse it clunks like its engaging, then won't move, no sign of moving. I plan to keep my th-350 for a while and may even put the 4l60e up for sale and do a t56 in the future. I dropped the pan and mine wasn't there. On the low-reverse boost valve, measure the long valve land for size. External cooler. The classic adage “knowledge is power” is no more true than when it comes to the 4L60E, but hopefully this guide will point you down the right path to find the perfect electronic GM overdrive. I have seen several problems with the 4L60e transmission series. Whether you need 4L60E wiring diagram information, 4L60E transmission rebuilders tips, 4L60E technical information, 4L60E diagnostics, 4L60E troubleshooting help, or. It can also be caused by the sun shell breaking. Another common problem I found on the 4L60E transmission was the solenoids going bad. Hold the brake for 10 seconds. I tried to back up again but it didn't work. The 4L60E (and similar 4L65E) is a series of automatic transmissions from General Motors. 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. The 4L60E style is one of GM’s most versatile and longest lasting transmission makes, due to the fact of the leaps it has made over the years. No, the 4L60E is a electronic computer controled. Never noticed any slipping. Best Answer: did you remove the input shaft from the drum. Kit raises clutch pressure slightly to prevent slippage and burn-up, an advantage for heavy-duty, plowing or repetitive forward-reverse maneuvers. 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. It shifts through all forward gears with no problems and even when it's hot I still have engine braking in manual 1st. This is a very common problem with these transmissions. 1994gmc c1500 5. We bought a new transmission and put it in and turn the car on and put it in reverse it worked, then put it in drive it would not move tryed reverse, 1, 2 didn't work. A common question regarding the 4L60E is, "what upgrades do you recommend while I have the transmission out, and what can I do if I don't want to take the whole thing apart?". Raybestos forward, overrun, and reverse input clutches and steels (3-4 clutches/drum) go into Performance Automatic 4L60E, 4L65E, and 4L75E builds. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. She said years ago they had tranny trouble; it would stay in low. got it home and now it doe not want to move at all. Why is My GM 4L60E Transmission slipping? It's on a 1996 chevy blazer with the 4. On the 4L60E make sure you always us a AC Delco hardened shell when rebuilding the transmission. 8 so you could possibly switch bellhousings if needed to correct spacing. 2L I-6 Engine and Drivetrain > Transmission Mods: 4L60E no shift to 3rd beyond 2nd gear it but that worries me going forward. D engages the overrun clutches. OD 1st, 2nd, and 3rd b. Advance Adapters The GM 700R4 main shaft kit is generally used when replacing a TH350. New sunshell fixed our no reverse problem we also got our second gear back after the rebuild. I have a 1994 6. Our Pro Race Series transmission is the finest built street/race automatic transmission in the industry. It is possible to remedy a fluid problem by removing the check ball from its cage in the case in the rear of the trans may help (must remove valve body), or adding a high-viscosity additive such as Lucas Transmission. 1994 GMC 4l60e transmission shifting problems 44 Answers. I've got a 1992 chevy 2500 4x4 6. Former automatic-transmission repairer, current welder and hobbyist game developer. Finding the root of the problem requires troubleshooting the transmission through a complete diagnostics test. Learn about this problem, why it occurs, and how to fix it. The Sub has no front driveshaft right now. reverse gear only 3. Test engine braking in all forward gears. Test engine braking in all forward gears. GM 4L60E, 4L85E, and 4L70; Ford 4R70W/75W. Reverse but no Forward Gears I have an 01 2500 4x4 290K no Prior Transmission issues before this. This transmission shifted smooth and strong through all gears until today when it stopped all of a sudden to engage either Drive or Reverse. External cooler. We incorporate all the updates and modifications to compensate for the problems and issues they were born with from the factory. is compatible with both forward- and reverse-pattern valvebodies. Ultimately, fixing your 4R100 transmission comes down to inspecting your components regularly and accurately diagnosing the problem. Find Automatic Transmissions with 4L60E Transmission Type and get Free Shipping on Orders Over $99 at Summit Racing! Automatic Transmission, Forward Shift Pattern. Now that's out of the way, let's show you a step by step 4L60E transmission rebuild. My 1997 Chevrolet Tahoe transmission just failed. At a minimum, the existing forward sprag should be disassembled and inspected closely for roller and race damage. Lubricate the seals with assembly lubricant J 36850 or an. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove valvebody), or adding a high-viscosity additive such as Lucas Transmission. Very common problem. If the car shifts from first to second, and then stays in second, never shifting to third or OD it may have a number 2 shift solenoid that is failing to activate, or failing. Completely silent. When it comes to transmissions, no other company provides this level of commitment to their clients. Hello, Trans connector is located right side middle of the unit right behind the side servo, you have to squeeze the connector to release the tab, dont just pull up or pry or you will break the tab, In my opinion, your problem is the low/reverse clutch is bad, as long as all foward gears work ok. Otherwise you must repair 4T40E / 4T45E. I have a pressure gauge connected to the Port just above the neutral start switch. No reverse is very common in the 4L60E. Expect a $1500 to 2000 bill. My problem was different from yours but he built me a transmission with a new torque convertor, all new solenoids, heavy duty "Beast" sunshell, Z-pack (14 clutches for 3rd & 4th gear vs. 115000 miles. but apperantly i was a lil to happy a few days ago. 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. RE: only reverse in transmission I'm not a transmission repair person but when I was younger and had 3 and 4 speed transmissions I had a couple go out on me and when they went out I always had reverse and some times I had reverse and high, and the fluid was always still good, in my case it was from racing that caused the transmission to go out. My 1997 Chevrolet Tahoe transmission just failed. The pump stator has one of the most important jobs and that is to hold the shaft steady while the input drum assy is turning, anywhere from idle to 5500 rpm (stock vehicles). No previous signs of slippage, hesitation, stalling or lack of power whatsoever. He just finished putting a 4L60E in my '97 GMC Sierra Z71 yesterday. Slow, slipping or no reverse: "lo-reverse" clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. P R N OD(4) D(3) 2 1, if this was the case then P would be reverse. And the overall length of the transmission and adapter is 26. IF not are there enough customers to issue an ultimatum to GM to repair there trans free of charge, since this is a known OEM failure. GM 4L60E, 4L85E, and 4L70; Ford 4R70W/75W. Possibly more if you drive it until it stops. Slow, slipping or no reverse: low/reverse clutches are worn out, fluid leak in the reverse apply circuit, or broken sun shell. This lets me eliminate the Low/Reverse clutch circuit as a possible cause. Time for a rebuild. A 4L60 is a 700-R4. Some customers may comment on a no reverse, no second or no fourth gear condition. Everything else feels like it's in neutral. Both times I shifted into drive, moved forward an inch or two, and then the transmission would shift into reverse. hayden 1405 is the best, the 4l60e is a perfect street trani when tweaked a little. Long story short, old transmission is shot, new transmission that was a fresh build, will not engage any forward gears. Any chance its something stupid and. Determining what problem(s) your car has may seem like an impossible task, especially to the untrained eyes and ears of the average driver. mistertransmission. Learn about this problem, why it occurs, and how to fix it. and for the tranny shops saying no known problems , thay are full of s#%t and were blowing smoke up your u know what. Note that the transmission can be electronically shifted between the 4 forward gears, neutral, park, and reverse must be selected with the shift lever (though the shift lever position can be detected via the switch manifold feedback). Let us know what you think! Please use our Contact Us page for issues that require a more immediate response. The 4L60E transmission is designed to handle a max engine torque of 360 lb-ft. is the 2-4 or "intermediate-overdrive" servo. Slow, slipping or no reverse: "lo-reverse" clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. The 4L60E transmission is designed to handle a max engine torque of 360 lb-ft. if you see no fluid try to drive it with the plug unplugged in reverse. If you have the time to accelerate slowly the transmission shifts with no problem. It slips in all gears and will sometimes take a while to shift, but it shifts into all gears before 3500 rpms, and reverse always works. 1999 to 2016 Super Duty - 4r100 no reverse moves forward in neutral fix - 2003 e350 s. If I start from a dead stop in D it will accelerate through 1st and 2nd gears without any slippage and when the transmission tries to shift into 3rd it acts if there is no 3rd gear (revs to moon- no forward motion). #08-07-30-027: No Movement When Transmission is Shifted to Drive or Third - Normal Operation When Shifted to Second, First or Reverse (Replace Forward Sprag Assembly) - (Jun 4, 2008) with 4L60, 4L60E, 4L65E or 4L70E Automatic Transmission (RPOs MD8, M30, M32, M33 or M70) Beside checking the obvious fluid level and etc, this is what I found. 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. Check for there being three complete shifts of the forward gears. Long story short, old transmission is shot, new transmission that was a fresh build, will not engage any forward gears. Kit raises clutch pressure slightly to prevent slippage and burn-up, an advantage for heavy-duty, plowing or repetitive forward-reverse maneuvers. No, the 4L60E is a electronic computer controled. Note that the transmission can be electronically shifted between the 4 forward gears, neutral, park, and reverse must be selected with the shift lever (though the shift lever position can be detected via the switch manifold feedback). 4L80E stuck with only 2nd gear and reverse. Re: 4L60e transmission By the way, I got the transmission on 3/10 and spend 5 nights at 3 hours each swapping it out. Typically, when any of the clutch packs wear out, they begin to drop debris in the transmission pan. 3L Vortec engine, and 4wd. I read a list that said my 2010 Sierra had a 4L60E but it is in fact the 6L80E - if you have 6 gears, you almost definitely have this transmission on a 1500 truck from this era (the heavy duty trucks have a 6L90E). Common failures on 4L60E, problems any possible repair Problem Symptoms Possible repair Slow, slipping or no reverse “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. Never noticed any slipping. This is also a pretty common issue with the 4L60E. Reverse works perfectly. Expect a $1500 to 2000 bill. this every day so this large array of parts is no problem. In a pre-1987 700R4 - 4L60 trans a larger low-reverse boost valve will hold off the auto upshift to 2nd gear while the shifter is in manual 1st gear. net is the home of the Transmission Rebuilders Network offering the leading transmission rebuilder forum in the transmission industry. basicaly you are looking at having the tranny rebuilt. one morning at the shop where i work i did a tranns flush and new filter and pan gasket. Didn't notice that the valve body needed new gasket and check balls which were included with the kit. Why Will My Car Go in Reverse But Not Forward? by David McGuffin If you are driving an automatic transmission vehicle and it can only go in reverse, you may have a serious transmission issue that can only be solved by a mechanic. Transmission problems in transmissions 4L60E Infallible Vedic Remedies(Mantras for Common Problems) is an excellent work by H. no slipping whatsoever. I will keep adding to this post as the build takes place. the input shaft is driving faster than the output shaft b. 4L60E No Reverse Causes. I read a list that said my 2010 Sierra had a 4L60E but it is in fact the 6L80E - if you have 6 gears, you almost definitely have this transmission on a 1500 truck from this era (the heavy duty trucks have a 6L90E). This isn't a transmission you're going to build correctly, using at ATSG assembly manual or a YouTube video. That supposedly superior "front planet" split into (2) parts inside the transmission although it is one molded piece. You get reverse from the elegance is the way the planetary gears work. Transmission fluid temperature sensors can influence line pressure and converter clutch strategy. My problem was different from yours but he built me a transmission with a new torque convertor, all new solenoids, heavy duty "Beast" sunshell, Z-pack (14 clutches for 3rd & 4th gear vs. It shifts through all forward gears with no problems and even when it's hot I still have engine braking in manual 1st. 4l60e problems not shifting to 2nd and 4th? This is a discussion on 4l60e problems not shifting to 2nd and 4th? within the Automatic Transmission forums, part of the Drivetrain category; Originally Posted by Cutlass I still think its the sunshell I agree with you too but that still having reverse. Hello, Trans connector is located right side middle of the unit right behind the side servo, you have to squeeze the connector to release the tab, dont just pull up or pry or you will break the tab, In my opinion, your problem is the low/reverse clutch is bad, as long as all foward gears work ok. 00 Add to cart; 727 / 46RE / 47RE / 48RE, 48re direct drum and Piston. This transmission is for the person that needs something better than stock. Automatic Overdrive Transmission Swap. No previous signs of slippage, hesitation, stalling or lack of power whatsoever. I found out this is a common problem with the 4L60E transmission. 95 4l60e not shifting past 2nd 30 Answers. 490" O-Ring Style Automatic Transmission. I have a 2000 Ford Escort ZX2 Automatic transmission. New sunshell fixed our no reverse problem we also got our second gear back after the rebuild. Transmission fluid is a good color and at a good level hot and cold. and for the tranny shops saying no known problems , thay are full of s#%t and were blowing smoke up your u know what. No, If you do not have 1st gear engine braking or reverse, you have an issue with the low/reverse clutch pack. It is possible to remedy a fluid problem by removing the checkball from its cage in the case in the rear of the trans may help (must remove valvebody), or adding a high-viscosity additive such as Lucas Transmission. The stabilization flats on the inboard end of the spool maintain oe flow, but provide continual valve support while stroking. Pull the underhood fuse for the transmission and that will force the trans to default to 3rd with R available. Never noticed any slipping. Going down the road all the sudden I have no forward or reverse gears exactly like mychevz71. No previous signs of slippage, hesitation, stalling or lack of power whatsoever. 35006 4L60E 4L65E Transmission master rebuild kit 2002-03 4L60E transmission rebuild kit with high energy 3-4 clutches, 0. net is the home of the Transmission Rebuilders Network offering the leading transmission rebuilder forum in the transmission industry. transmission problem-no reverse Problem Diagnosis Car Reverse and and one forward gear gone points to sun shell. GM 3800 Service Tips, Techniques, and Advice September 19 at 11:39 AM Troubleshooting the "Slip-Bang Shift" into first gear transmission p roblem in the 4T65E: When taking off from a stop, the engine RPMs race up but the car does not move, then the transmission slams into first gear. they're the most common problem in the 4l60e and with the heavy duty versions mixed with a torque converter and a shift kit and ALWAYS put a cooler on autos. May also have worn boost valve. It slips in all gears and will sometimes take a while to shift, but it shifts into all gears before 3500 rpms, and reverse always works.