My 2000 Pontiac Montana with 180,000 km has developed a transmission fluid leak at the vent assembly located at the top of the transaxle (model 4T65E). Now I know this is unusual because I could not get much information to this type of leak on the internet or at my local library. My research tells me that there may be an internal leak forcing the fluid to this vent and the most likely problem is that the Channel plate gasket needs replacing. As a DIY’er I was hoping that it was only the pan gasket, making my problem easier but no such luck. My questions are, how much should this repair cost? And is this a common type of leak?
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Thursday, September 13th, 2007 AT 8:47 PM