TURBO 400 wheezing the juice!!

[85-m1028]

I've got an 85 m1028 w/ turbo 400 that is leaking fluid onto the front drive shaft and all down the bottom of the tranny, I replaced the vacumme modulator and power washed the trans and tunnel to see if I could find the source of the leak, there are no drips out of the over flow tube. It does vibrate some when shifted into drive and will sometimes take a minute to catch up when I push the pedal down, it shifts great once it gets going. Fluid loss is about a half a QT. every 250 miles, I was told these are very tough transmissions so I'm wishing that this is something that will not require complete overhaul.

 

[Txstruck]

Sounds like it may be the front pump seal leaking. They are tough transmissions, but with a leak like that, I would get it fixed ASAP. I had mine completely gutted and rebuilt for just over $400.

 

[Westech]

the front pump seal sounds right to me also. Ive run in to that a bunch of times on all gm tranys. I have seen the pump cover crack also so watch for that.

 

[muddobber40]

Could it be the grommet the dip stick tube sits in?