tranny flush poll

[checkedout]

If you were having a shifting or shudder problem and you flushed your tranny fluid did it
1. fix the problem?

2. Make it worse?

3. Had no affect?

 

[BradE.]

Is your 96 a V8? I ask because you mentioned shudder, and if you have the V8 that means you have the 4R70W trans, which is known to shudder.

There is a TSB updating all 4R70W trannys to Mercon V fluid, which helps eliminate shudder.

 

[checkedout]

no. I have the v6 auto

 

[aldive]

I flush and use synthetic ATF as a preventitive measure; never had any tranny problems.

 

[Bill Kemp]

I would just change the filter. You are changing about 1/3 of the fluid doing that and its much cheaper. The filter change is something you would/should do if you get a flush anyway. In my experiance if a filter change doesnt help a flush isnt gonna help either.
While you have the pan off install a drain plug and it will make the next change much eaiser or at least less messy.
On a veh. that age you should be doing a filter change one a year. Cheap tranny insurance....

 

[checkedout]

I flushed the old fluid and the shudder is gone. It's only been a couple days though.