2000 Blazer Transmission Fluid Leak

[mrswans]

My blazer (65,500 miles) started leaking transmission fluid at the front of the transmission. It is dripping through the 2 rubber stoppers below the torque converter. It doesn’t seem to leak if it is driven every day or 2. But after a week of sitting, it leaves a 1ft diameter wet spot. Any ideas?

Thanks,
Mike

[BlazerLT]

Replace the stoppers?

[mrswans]

Originally Posted by mrswans

My blazer (65,500 miles) started leaking transmission fluid at the front of the transmission. It is dripping through the 2 rubber stoppers below the torque converter. It doesn’t seem to leak if it is driven every day or 2. But after a week of sitting, it leaves a 1ft diameter wet spot. Any ideas?

Thanks,
Mike

I got it up in the air and took another look, the fluid is leaking from somewhere at least 4 inches right above the starter and running down the transmission case. The transmission lines going into the transmission are dry, the leak it is in front and above them. There is no room in there to see and once I drive it the fluid is gone for a couple days. Any ideas of where it might be coming from or how I could find this leak?

Thanks,
Mike

[BlazerLT]

There is a vent line going to the HVAC system at the top of the tranny.

Oil will only start to come out there if you have an overfilled tranny or it is overheating.

Have your transmission serviced with new fluid and a new filter.

Also check to see if the fluid is too high.

[mrswans]

Originally Posted by BlazerLT

There is a vent line going to the HVAC system at the top of the tranny.

Oil will only start to come out there if you have an overfilled tranny or it is overheating.

Have your transmission serviced with new fluid and a new filter.

Also check to see if the fluid is too high.

Hi, the transmission fluid level is fine (warmed up, in park, between the hash marks). I changed the fluid about a year and a half ago, 15,000 ago. The fluid looks clear, red and smells like new. It sure doesn't look overheated. My wife used to drive this blazer everyday and now she doesn't drive it at all. I drive it like 20 miles total on the weekend and it is fine for about 2 days, then it drips nice clear red fluid (about 1 foot diameter). It looks like it is coming from the manifold area. I can see the vent hose on top of the transmission, but I can't see where it connects to the HVAC system. Could there be a stuck valve on this vent hose?

Any new ideas would be appreciated,
Mike

[dcjones]

Did you ever find the source and solution to this leak? I have a 2000 Blazer 4x4 with approximately 70K miles and I recently noticed the same problem. Driven daily there is no leak. If the Blazer sits a day there is fluid on the ground. From looking under there real quick it looks like it is coming from the front of the transmission pan. I know I am over due for a transmission fluid and filter so I hoping the transmission pan gasket was leaking and the new one that comes with the transmission filter kit would solve my problem. If it doesn't I was hoping whatever solved your leak could help me.

[blazes9395]

This one sounds like a front transmission seal. If your driving it, its not bad, but if you let it sit, the torque convertor is full and will begin to leak past the seal. Hopefully, though you may be lucky and its just a pan gasket.......