Its got to be the 2-4 band because the beast sunshell was good after the rebuilds and the truck is still dead in front of my work with the same problem now all thats there is first gear otherwise id drive it. The only codes the ecu flashed was the tcc (torque convertor clutch) malfunction. Expect next to be 4th gear loss, then you will lose 2nd.
Description Pro Race Series (Level 2) 4L60EOur Pro Race Series transmission is the finest built street/race automatic transmission in the industry. These transmissions are tough and built to handle whatever you dish out. We incorporate all the updates and modifications to compensate for the problems and issues they were born with from the factory.
We believe you will not find a better performance transmission anywhere!Below are the details of our Pro Race (LEVEL-2) built transmission.First, each core transmission is disassembled and carefully inspected. The case and hard parts are cleaned thoroughly and re-inspected for cracks, wear, or other damage before we begin.
The case is specially prepared and a coating of and heavy duty, heat resistant, oil based enamel is baked on, creating a hard and durable glossy finish. The seals in the case are then replaced and assembly begins.The rear planetary assembly and bearings are meticulously inspected, then assembled into the case along with heavy duty reverse friction and steel plates. At this time the center support and sprag (one way roller) are installed after being inspected for stress cracks and damage. In addition, dual bushings are installed in the rear sun gear to handle the extra weight of the beast sun shell.Next, the sun gear is inspected and modified to improve lubrication to the rear planetary assembly. This allows oil to escape from between the bearing and the gear it rests against, feeding additional lube to the planetary gears. This is a huge improvement and virtually eliminates one of the most common points of failure for this type of transmission.
In fact, contrary to common opinion, the rear planetary assembly in these transmissions is not, in any way, weak by design. Their failure is almost exclusively due to a lack of lubrication. When you see one of these with a damaged rear planetary, it will almost always be accompanied by the blue-black signs of excessive heat. Simply put, these planetary assemblies with good lube DO NOT EASILY FAIL; even in the most demanding environments.We then replace the sun shell with a new heavy duty unit called (and deservedly so) THE BEAST, which far exceeds the factory component. THE BEAST is able to withstand the rigors of the street, the strip, or the mud; whichever is your pleasure. No matter how hard you beat on it, THIS SHELL DOES NOT BREAK!Next, we re-inspect the front planetary assembles – measuring clearances and making sure everything is within our own rigid specifications before installing it and inserting the output shaft.The front sun gear, like the rear sun gear, is then modified for improved lubrication and installed. Then the output shaft is set for the proper end-play.We re-inspect the input drum before installing new rubber seals and a neoprene lubrication seal.
Next, we install new heavy duty overrun friction plates, A BORG WARNER DUAL CAGE INPUT SPRAG ASSEMBLY, and carbon composite forward friction plates. These forward friction plates have a superior holding capability as well as improved ability to withstand extreme heat; when compared with the OEM friction plates. Since these friction plates must hold the power of your vehicle in every forward gear, they have to be tough enough for the job.Finally, we replace the 3-4 clutch set with 8 high-energy Borg Warner friction plates and Raybestos steel plates to avoid heat burn and coning.Next, we install the reverse input drum for the new Max Duty Performance Wide Band.
This band has approximately 20 percent more surface area for holding in both second and fourth gears. This stronger 2-4 band will hold the torque during that tire chirping shift into second at full throttle in your performance machine.We also install the.SONNAX BILLET. for maximum “apply pressure” in second gear and the Sonnax twin piston super servo for overdrive, providing an additional 30 percent holding ability in 4th gear.Now we move on to the pump. It is inspected and modified to provide maximum lube to the planetary sets.
We install a large boost valve suitable for the application. The vanes in the pump are carefully inspected for wear and replaced as needed. Steel pump rings are installed. The pump bushing is replaced with a Teflon bushing, and notches are made in pump surface to prevent its movement in even the most demanding high RPM or towing situations. This effectively eliminates front seal blow out. In addition, the front seal is installed with a special adhesive and seal retainer to eliminate any possibility of ever having a problem. The pump is the heart and soul of any automatic transmission, and we make sure it’s a healthy one.
Max line pressure to between 210 and 225 PSI; which is dyno verified, of course.The last section is the valve body. For this we use all we have learned over the years.
![4l60e 2-4 Band Failure 4l60e 2-4 Band Failure](http://patc.co/wp-content/uploads/2016/01/Anchor700R4-3.jpg)
Although most shift kits have certain distinct advantages, what we have learned is no one kit has all the best modifications some parts we liked, others we didn’t. We took the best parts of each, and utilizing our own experience, created a set of modifications that is superior to all the others. We do not block accumulators, since the reason they exist is to prevent excessive shock to the transmission and drive train. With our transmissions, you will always have a solid, firm shift that will be linearly progressive. That means at light throttle you will feel a nice bump, letting you know the car or truck has shifted. As throttle is increased, the shifts will become more pronounced to the point of tire chirping in high performance vehicles or a firm shift at full throttle in a towing/hauling situation. It will not cause whiplash just cruising with your significant other or your grandmother around town, but will turn heads when laying it on the line.We also eliminate the partial lockup function GM mistakenly engineered into the 4L60E transmission, thus eliminating converter shudder, premature converter clutch failure, and the well known code 1870, which causes high “line pressure”, no fourth gear, and teeth cracking shifts at low throttle.
Lockup is either OFF or ON, not slipping off and on as it did with the factory PWM working. This does not affect performance, but it does have the added advantage of increasing low speed fuel efficiency, which at today’s fuel prices is like getting a bonus. In addition, this modification, along with others, allows us to use later valve bodies on older units to improve performance and increase interchangeability and reliability.So there you have it. Our LEVEL 2 TRANSMISSION, designed to meet your needs today, tomorrow, and for many years to come! Additional information WARRANTYPlease note our page.
This transmission comes with a 1 Year Warranty.2 YEAR WARRANTY UPGRADEThis option provides you a 2 Year Warranty on your PerformaBuilt transmission for an additional $300.BUY A TORQUE CONVERTERIf you purchase a torque converter from us you will automatically get the 2 Year Warranty Upgrade.HORSEPOWER RATINGThis transmission will support up to 700 RWHP.NOTEAll units are available in either 2wd or 4X4. If you have a special application requiring a special adapter or output shaft, please contact us and we will be happy to provide it and quote a price for your special application.NOTE FOR LSXThe LSX transmission has a removable bell housing which is not included with our transmission. You will need to use your original bell housing and extension housing, but the transmission will have the appropriate output shaft for your application.These items are available at additional cost.C5 CORVETTEC5 corvette 4L60E CORE REQUIRED. Once you receive your PerformaBuilt Corvette transmission, send us your buildable core to receive your core charge refund.YEARS4L70E and 2006 TBSS and 2007 up 4L60E/65E/70E CORE REQUIRED. Once you receive your PerformaBuilt transmission, send us your buildable core to receive your core charge refund.QUESTIONSIf you have any questions feel free to call, or email us at. We also have Live Chat during business hours; located in lower right corner of this webpage.
Common failures on 4L60E, symptom - cause - any possible repair:1. Slow, slipping or no reverse: “lo-reverse” clutches are worn out, fluid leak in the reverse apply circuit, or broken sunshell. 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 additive or other seal restorer product. May also have worn boost valve (can replace in the pan).2. 1-2 shift does not happen at WOT until you let off the gas: Best case: try replacing the TPS.
Middle case: leak in the 2nd gear apply circuit (servo assembly or 1-2 accumulator). Doublecheck by using the pressure gauge and watch for a big drop when the PCM commands 2nd gear. Worst case: poor line pressure rise (see below).3. 1-2 Shift shudder at WOT; delayed or abnormal 1-2 shift; There's a problem ONLY on the 1-2 shift: 1-2 accumulator piston cracked or stuck cocked in the bore.
Check the yellow spring inside the accum housing for breakage. Also, if the accumulator housing walls are scored, the housing must be replaced. Easy fix in the pan.4. 1-2 shift is delayed and harsh, may not shift into OD: Check TPS for smooth and linear electrical response over the entire range of motion. If not, replace.5. Trans does not upshift out of first, speedometer reads zero at all times: VSS failure. Easy fix on rear of transmission, but xmember must come out to access VSS.6.
No 3rd or 4th gear: “3-4” clutches are worn out. The car is safe to drive (in 2) until you can get it fixed.7. Sudden grinding noise with no prior warning primarily in 2nd gear, behavior in reverse may be abnormal; sunshell is fractured. Try not to run or drive the car or further damage could result.8. 1st and 3rd only, no 2,4 or R; sunshell is fractured or splines are sheared off.
Try not to run or drive the car or further damage could result.9. No 2nd or 4th gear: 2-4 band is slipping. Servo seals may be damaged (can be fixed without removing trans. Otherwise, 2-4 band is worn out. Trans shifts into gear harshly, 3rd gear starts, manual 2nd available but no 1st, no 4th, and no TCC lockup: No power to transmission, or trans is in limp-home mode.
Check trans fuse underhood, and make sure transmission electrical connector is plugged in. No 1st or 4th available: trans shifts 2nd to 3rd by itself in D or OD: ShiftA solenoid failed. Easy fix in the pan. Or a wiring problem from PCM to trans.
No 2nd or 3rd available: ShiftB solenoid failed: Easy fix in the pan. Or a wiring problem from PCM to trans. No TCC lockup: Brake pedal switches improperly adjusted (always on), TCC solenoid failed (easy fix in the pan), TCC clutch worn out (must remove trans and replace TC).14. TCC always locked: TCC apply solenoid circuit shorted to ground, TCC solenoid blockage (easy fix in pan), or TC broken (must remove trans and replace TC).15. Horrible noise in 4th and feels like the brakes are on: overrun clutches are applying due to a cracked or leaking forward piston. Overrun clutches will be worn out after 30 seconds of this behavior. Car can be safely driven in D.
Soft shifting, gradual performance degradation: Poor line pressure rise due to leaking boost valve, clogged EPC filter screen, failing EPC solenoid, or worst case: leaky seals throughout. Transgo HD2-C kit fixes first two without removing trans. Seal restorer may fix last problem, but probably R&R. Also try a transmission flush with BG brand products (Firestone stocks it).17.
No forward movement in OD or D, but L2, L1 and R work: Forward sprag is broken. Try not to run or drive the car or further damage could result.18. Extremely harsh shifts from P or N, normal shifts at WOT: EPC (Electronic Pressure Control) solenoid failed.
Easy fix in pan. Fix as soon as possible or hard parts will eventually break.19. Loud bang, grinding sound, loss of all gears, and a binding driveshaft: snapped output shaft. Try to wiggle driveshaft - if more than 0.020' play, that's the sign.
Trans seems noisy when moving in 1st and Reverse, noise goes away instantly if you shift to N or the trans goes into 3rd gear: Reaction planetary is worn out due to high miles or insufficient lubrication. Not a critical failure, but not a good sign either. R&R sooner rather than later.21. No movement in any gear: pump failure, or total loss of fluid. R&R, or refill pan and find the leak.
If out of fluid, avoid running the engine until the trans is refilled to avoid pump damage. To check for pump failure, check fluid level with the engine off, then start the engine and recheck fluid level. If level does not go down when engine is running, the pump is broken.22. Transmission does not shift automatically, only manually: Swap in a known-good PCM, check wiring, check other sensors such as VSS and TPS.23. 3rd gear starts, can manually shift through all gears. When car has been turned off for a bit, then back on it will run normally.: VSS dropoff w/ Hi-stall converter. The rpms are too high, but VSS is showing no movement.
Happens after a tire burning take-off. Doesn't store a code, will not throw a CEL (I've heard that it will store a code if it happens 3 or more times).
Cure: Reprogram PCM for VSS dropoff - PCMforLess knows about it.24. Car feels sluggish off the line, No 1st, 4th or TCC lockup available, Manual 2nd, 3rd and Reverse are only available gears, CEL is on: Transmision is either in limp-home mode or has lost electrical power. If there are lots of error codes in the PCM, check the underhood fuse that powers the transmission, and if it pops again, look for a short in that circuit like an O2 sensor harness touching exhaust.
Otherwise, check PCM codes for a particular fault in the transmission causing the PCM to put it in limp-home mode.25. Fluid leak out of the front of trans where the converter connects; partial or full loss of movement: Front pump bushing walked out.
May have to replace converter also if hub is scored. Note that a leaking front seal usually means the bushing is walking out (i.e. Call your local trans shop and schedule an appt.).26. Torque converter shudder in 4th while lockup is engaged, problem goes away when the brake pedal is pressed slightly to unlock converter: Have a shop verify line pressure, and provided no valves in the TCC hydraulic circuit are worn, replace the torque converter. Also, Lubegard Shudder Fix will at least fix this for awhile. Or try a transmission flush by a shop that uses BG brand products.27. Shift suddenly become very hard.
When going from park to either reverse or drive it slams into gear. 1-2 and 2-3 shifts are also harsh. All gears seems to work. Problem may be intermittent: Check TPS for smooth electrical response. If the response is jumpy or erratic at all, replace TPS.28. All fluid pumped out through the vent tube: Plugged cooler line.
Flush the transmission cooler and cooler lines. Also could be overfiled transmission.29. Car acts like it's in OD in neutral, car is locked stationary in R, engine feels loaded in P, all four forward positions work fine:Internal crossleak feeding the forward clutches all the time. Most likely a cracked input housing. R&R required. Car can safely be driven gently in forward gears until the repair.30.
Needle bearings in the pan, first gear and/or reverse may be noisy: Either a torrington bearing or a planetary bearing is on its way out. Trans will eventually die a loud, catastrophic death. Cheaper to rebuild now (saves further damage to hard parts), but requires R&R. It is drivable until it breaks.31. 1-2 or 2-3 shift is slow/soft above part throttle: Trans is on its way out. 2-3 clunk/ bang under light load, but other gears shift fine:Some vehicles may exhibit a clunk noise that can be heard on a 2-3 upshift or a 3-2 downshift. During a 2-3 upshift, the 2-4 band is released and the 3-4 clutch is applied.
The timing of this shift can cause a momentary torque reversal of the output shaft that results in a clunk noise. This same torque reversal can also occur on a 3-2 downshift when the 3-4 clutch is released and the 2-4 band applied. This condition may be worse on a 4-wheel drive vehicle due to the additional tolerances in the transfer case. This is a normal condition. No repairs should be attempted. This is a bulletin from GM that i found.
It is considered a normal condition. I'd still do the preliminary checks to make sure all driveline components are in good condition.33. Gets stuck in third gear but able to be manually shifted through the gears. Replacing the 3/2 downshift solenoid in the tranny pan fixed the problem.34. When placed in drive, won't start in 1st but then sometimes it will then second and third shakes and then clears up:Sprag clutch flipped and broke the cage, but sometimes you can make it flip back over, that's why the death rattle in 2nd and 3rd.35. No 2nd and 4th?
But has reverse: The 2/4 band is broken, not applying, or burnt to a crisp.36. Whistling noise from transmission: Teflon wore off your pump bushing. They wear off, and make a funny little buzzing sound, then when you put it in gear, the pressure goes up, and the torque converter is pushed forward slightly, and then no noise. The sound is temperature temperamental too.If you see any changes or any other ideas, just add them to the list.