The 4L60E Guide


Common Failures with 4L60E Transmission February 11, 2015

The world of vehicles and vehicle parts is indeed a complex one. There are many little fine intricacies that comprise this small microcosm. What we like to discuss today though is one particular model of transmission. And this model is 4L60E transmission. There are many benefits of using this particular transmission, and you’ll have made a fine investment if you decided to get it for you. But this isn’t the focus of the article. The focus of the article is about some of the potential failures that may arise with the use of 4L60E Transmission.

Without dragging it out unnecessarily, we’ll share with you certain problems that may arise, and potential ways in which you can fix them.

Slipping, slow, or no reverse. The Lo-reverse clutches seem to be worn out, and there’s a fluid leak somewhere in the reverse apply circuit. A broken sunshell can be the case as well. This fluid problem can be effectively remedied by the removal of the checkball. Either that or you can try to add high-viscosity additive. This should solve the issue.

If there are no third or fourth gear, “3-4” clutches seem to be worn out. You should go about this issue by removing and replacing them.

If there’s a certain grinding noise primarily in the second gear, the sunshell may be fractured. The best way is too let the vehicle rest and recuperate. Evade the urge to drive the car unless you want even more damage to it.

If there are no second or fourth gear then the 2-4 band seems to be slipping. The servo seals may indeed be damaged. Rest and recuperate is the way to go here.

If there are the first or fourth gear are unavailable then it’s likely that a shift A solenoid has failed. The same goes if there are no second or third available – the shift B solenoid might have failed.

If there’s no TCC lockup then the case may be that the brake pedal switches are not properly adjusted, or the TCC solenoid has failed, or the TCC clutch I worn out.

If there’s 1-2 shift shudder at WOT, or abnormal or delayed 1-2 shift, then the 1-2 accumulator piston may be cracked. Sometimes you may get the experience of hearing a bad noise in the fourth, and it may feel like the breaks are turned on. This may mean that the forward piston is cracked or leaking. Rest and recuperate in this case as well.

There you have it, these are just some of the potential pitfalls that may arise if you decide to use a 4L60E Transmission. A full analysis of all of the potential failures will take books to be written though. And you’re in luck – there are indeed books written on the subject. One of these books is to be found at the website called You can purchase this small but very insightful book and learn all the information you might ever need on the 4L60E transmission.


Common Failures with 4L60E Transmission

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Common Failures with 4L60E Transmission February 11, 2015