Yeah the machine can suck out old fluid and not refill the trans. And it is true that if a trans is slipping don't change all the fluid out. The old fluid has small particles suspended in it and help give the old clutches friction. There are about 12 bolts to take the pan out and RTV "SETS" in 15 minutes (the black RTV) and fully cures in 24 hours. Rubber gaskets don't need to be coated, but you would need a small torque wrench. Also the filter is held in by 1 bolt. So yes it can be relatively quick, but I wouldn't do it on a drive over pit just in case you drop a bolt. Accidents do happen. Driveway change it took me an hour since I also put the pan in solvent to get it like brand new. I also let it drip a little bit longer too. If you are really in a hurry, you can get it done in a half hour.

 

My tranny shifts kind of hard in between 1-3 gears and so I had my tranny flushed about 3weeks ago at a chevy dealer and they told that they were not going to change the filter because that was extra an now my tranny still shifts hard could that be why I have an automatic.

 

it could be your transmission mounts, or the shocks in your car could be worn also

 

When I first got my 'Maro, it POP'ed every time it went in gear while standing. Put new tranny mount on, fixed it fine. Don't know about the fluid though, so sorry for going off topic

 

Have you ever changed burnt tranny fluid? The trans almost always goes up in a matter of days if you change it based on its color or quality. The only way to change trans fluid is to do it when it's needed by something close to the manufacturers recomendations. They aren't always right, but they will stop you from having a tranny go bad.

 

saying you don't need to change your filter after a change is just plain dumb[sm=badidea.gif]. first you say that you do the power flush because you are concerned about getting all the fluid out, but you aren't concerned about the filter?

makes no sense!!![sm=dontgetit.gif]