I'm looking for help with a 98 Blazer with 4 wheel drive that has issues with the transmission boiling fluid out of the dip-stick vent. It has 132k miles and is used for a small amount of winter plowing. It still shifts into all gears, but will starting spouting fluid after running approximatley 20 miles. It tends to shudder when running at a steady rate of speed with an easy losd applied. I wonder if anthing can be done with pulling it out?
Thank you.

 

Well, I happen to know about hot 4L60Es in Blazers. As a rule it blows fluid out the overflow tube not the dipstick. If it is coming out the dipstick the trans is over full most likely.
Anyway, the fix is have the trans serviced by a tech that knows how to operate a flush machine. Have it completely flushed & a new filter installed. If you don't get all the burnt fluid out your wasting time & money. Once it is completely serviced add a B&M SuperCooler, that will cure your problem. How do I know this is I burned the tranny fluid pulling a 5000# trailer 800 miles over several mountain passes over 6000 feet. The fluid was blowing out the overflow vent. I did as I told you & that was 30,000 miles ago & the tranny still works great. I have towed the same trailer also since then. Your looking at a few hundred dollars to service the trans & the SuperCooler can be bought from Summit Or Jegs for around $46.

 

It's also possible the overflow vent is clogged.

 

GOOD POINT. THANKS for that.