When I got my 4l60e(M30) it had a long vacuum hose coming from the top of it. I'm just wondering did anybody else using the 4l60e have the same long hose. If so what did you do with it? Did you leave it hanging or connect it to something? Thanks, Jay

I'm not positive on this tranny, but a lot of automatics have a vent tube coming out of the top of the trans casing.

I basically just need to know should I connect it to one of the ports on the intake or not?

Thanks,
Jay

It doesn't connect to anything

Firebat,

Are you certain it does not connect to anything because them is a very long vacuum hose?

I guess it just seems like to should connect to something because of the length.

Thanks,
Jay

I'm pretty sure but how long is it? I've helped my brother swap 4l60e trannys on his 95 t/a at least 2 times and never hooked that line to anything.

Is that not line for overflow of tranny fluid?

Firebat,

I would say that the hose is at least 4ft.

Camaro_SS,

I'm not sure what you mean by that. I have never heard of such.

Jay

I am 90% sure it is a vent line, I believe it is located on the top above the front pump area. Most automatics have the same thing, usually it is just a small tube about 2 in long about the same place, if the trans seriously overheats it uses that instead of blowing input or output shaft seals. The 4l60E is all electronic controlled, the only hook up besides the shift linkage is wire connections as I recall. Sounds like someone just put a hose on it so if it did vent it wouldn't undercoat the floorpan.

Ask Pro Built Automatics on this forum, should get a 100% positive answer

I have seen the vent hose that is over a foot in length, on cars, but I have seen them that long on 4WD vehicles before. It comes up the back of the firewall and loops over to prevent water from entering when they do some serious off roading. If it is in the way, shorten it.

Thanks for the info.

I will just cut it down some.


Jay