Automatic transmission fluid overfill, how do I drain some out?

2004 CHEVROLET IMPALA
188,000 MILES • 3.8L • 6 CYL • 2WD • AUTOMATIC
Avatar
RYDER1477
  • MEMBER
  • 44 POSTS
To make a long story short, i had a leak coming from the oil cooler line coming off the radiator, i fixed it and the leak is gone. But during this period, I had to keep filling it up with fluid because it was close to dry many times.
Upon checking today, I have no leaks but am way overfilled with ATF.
How can i drain some out?
Dec 27, 2024 at 2:47 PM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Sure, it is not too bad to let the excess fluid out just loosen the transmission fluid pan and it will start leaking. Use a fluid catch basin to catch the fluid. You may want to replace the gasket and filter as long as you are there. Also, I have seen people use a fluid extractor with a thin tube and feed it down the dip stick tube and suck it out that way as well.

This guide can help:

https://www.2carpros.com/articles/how-to-service-an-automatic-transmission

Check out the images (below). Let us know if you need anything else.



Image (Click to enlarge)
Professional Diagram for 2CarPros Members
Click here to log in and view diagram.
Dec 28, 2024 at 11:29 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.