Q: Th350 transmission leaks out of thr vent. On 1977 chevy k10

asked by on July 09, 2017

I just had my th350 transmission rebuily. I put it back in filled it up the correct way went and put it through the gears then started to back up and transmission fluid started leaking out of the vent hole. ( I have the granny tunnel off so I can watch it happen ) it only leaks in reverse. I tried taking fluid out but then it wouldn't drive right and it still leaked. I drained as much as I could the slowly refilled it but it still leaks out of the vent in reverse. I have searched the internet and can't find anything. I'm about to talk to the guy ego rebuilt the tranny. I really don't want to pull it again. My question I guess is why is my th350 leaking out of the vent??? Its not over filled.
My car has an automatic transmission.

It sounds like it may have originally been over filled. Fill 4-5 quarts, then start the truck and then slowly fill up the remaining fluid. This should keep it from leaking from the vent hole.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Transmission leak and no acceleration what could be the problem?

It is possible that your transmission could be slipping due to the fluid leak. I would recommend having a transmission inspected by a qualified professional to determine the exact source of the leak. Once the leak source is determined and...

in my car where and how can i locate the ECM

First, why do you want to replace the PCM and/or BCM? It's very rare that a module goes bad. The problem is usually something else. I recommend having a professional, such as one from YourMechanic, diagnose and repair your vehicle;...

O2 sensor 2003 Chevrolet Malibu

Hi there - yes, it is possible that a malfunctioning or dead O2 sensor could cause stalling. It will, over time, clog your catalytic converter - an expensive repair - and spew increased toxic exhaust into the atmosphere. In most...

Related articles

The Best Used Cars to Buy If You're an Undercover Cop
If If you're an undercover cop, when you choose a used vehicle, your main purpose is to look like anything but a cop. That means, of course, that an unmarked Crown Victoria is probably not the wisest choice. We’ve...
2012 Toyota Camry vs. 2012 Chevrolet Malibu: Which One Should I Buy?
Mid-size sedans are the perfect family vehicle; offering just enough space for you and a few kids, but not so much that a small family will feel lost in them. This class of vehicles is slightly larger than a compact...
The Top 5 Selling Cars in Alaska in 2012
Alaska Alaska requires a different kind of vehicle to handle both the terrain and the wintery conditions. While some of the most popular options for the Alaskan terrain in previous years included options such as the Subaru Forester and the...