Hi,
New member here!
My daughter recently inherited a 2004 Blazer, V6, auto trans, 4X4. 23,000 miles on it.
It was owned by the grandparents, not driven much the last couple of years.
This is the newest vehicle we have ever owned, I have to learn about the computer & sensors & all the 4x4 mechanicals.

I do almost all the mechanical work on our other vehicles, they are all Diesels, mostly from the 1980's, one from 2000
(simple - no computers except for the Powerstroke)

I ordered a DTC reader (the Ford Diesel one won't work on the Blazer), and also bought the factory service manual set for the Blazer.

What I want to know is not making itself easy to discover, in spite of Googling and searches on this site, and reading the manuals.

"Does the torque converter have a drain plug"????

I would like to crawl under the Blazer and look, but the daughter is so excited about getting rid of her ancient "clack-clack" w/ 370,000 miles on it, the Blazer is rarely available for me to look at because she is driving it all over the place.

All the other vehicles we have use the same process for a transmission oil change - remove the drain plugs from the pan & TC, remove the pan, replace the filter, put the drain plugs back in, fill. I want to do this w/ the Blazer some time in the future, if possible

Back in the 1960's the Chevy TH400's I worked on did not have a drain plug on the TC, the procedure was to drill an 1/8" hole in the converter, let it drain from that, put in a blind-end pop rivet w/ sealant after.

It has been explained to me that the 60's are over and I need to get modern now.

Do I need to add a flush system to my tools now????

Thanks,
fish

 

No, the torque converter does not have a drain plug. There isn't a drain plug on the pan either.

The easiest way I have found to DIY the fluid exchange is to pull one of the factory transmission cooler lines and then affix a hose to both locations which were once together. Start the truck and pump out a pre-determined amount of fluid (2-4qts), then shut it down and refill with the same amount of fresh fluid. Repeat as necessary.

I'm not sure I would worry about it yet with only 23k on the clock. That is unless it is dark and/or smells burnt already, but I would doubt it. I have almost 50k on my Rainier with a number of heavy towing trips in 80-90* weather and the fluid still smells & looks like new. I have a large aftermarket cooler though which helps.