Thread: Transmission "chatters" 2nd into 3rd on WOT

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  1. #1 Transmission "chatters" 2nd into 3rd on WOT 
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    Recently had 4T65E transmission replaced with remanufactured one.

    Noticed that on wide open throttle, when it shifts from 2nd to 3rd, the transmission makes a chattering sound. Very similar sound that a drill makes when it has reached the torque setting of an adjustable clutch.

    Took it back to transmission shop, and they didnt seem to experience the same issue during test drive. They did see an issue with the amount of play/flex of my motor mounts. I have since replaced the top mounts above the radiator attached to the dog-bones.

    Have since put on about 3000 miles. Fluid levels are good. Shifts nicely otherwise.

    But, What is the chattering sound?
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  2. #2 Re: Transmission "chatters" 2nd into 3rd on WOT 
    Transmission Expert Trannyman95's Avatar
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    The only time I have ever heard noise like that during a shift, and it wasnt in a 4T65E, was when the clutches were worn badly from not being installed correctly and the inner teeth of the clutches were stripping on the splines they engage to. Again this was not on a 4T65E and I have never heard a noise like that in one of these during a shift so not sure what to tell you. I would take it back to the shop and YOU drive the car with there tech and let them here the noise it makes so you can point it out to them. If it shifts fine to you and them they arent going to be in a big rush to rip the trans apart to chase a ghost so to speak.
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