tranny flush

[jd hauler]

My 99 2500 has 42000 on it, I plan on doing some heavy towing and wonder if you guys and gals have had your 4L80E serviced and if you got the flush for the whole thing , converter, tranny and a filter or what and what would this cost at the dealer?  Also how about a frequency  on this interval. thanks in advance.

[Guest Friz]

I do mine at about 40,000 miles and it costs me about $75.00. It is definitely better than just a filter change.

[CMNTMXR81]

$75 sounds about right.

 

You wouldn't believe the sh*t you'll see flushed out if you watch!  It's simply amazing what crud gets caught up in there.

 

I also flush the engine oil at around 50k.  It's simply amazing seeing what comes out.

[inginear]

How about disconnecting the cooler lines and using compressed air to get most of the fluid out of the converter?  Any check valves to prevent that?

[SnakeEyeSS]

Wouldn't it be good to replace the filter also? or does the flush get rid of the need to?

[CMNTMXR81]

Flushing has nothing to do with the filter other than replacing it with a fresh one before you bolt it all back together.  It's kinda hard to explain how it works but BG products is the maker.  It's essentially a power flush system.

 

I would hesitate to use compressed air not only can you damage something, but the air is only compressed for so far into the system.