Hello,
just putting my t56 back in after replacing slave which iß another story...
noted the vent tube off the t56 was open. Found little white plug which can see straight through....
am I missing something that was supposed to be in the white plug?
regards
gav
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Should be a plastic cap over the top of it.

 

Guess I will have to buy one from somewhere. Anyone fit another type? Can't really leave it open?
regards
gav

 

4L60E factory one is the same thing, Dorman makes one if you have access to the parts they make over there.