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Changing tran fluid in '89

T

tonylong

Guest
I've decided to change the ATF, filter, etc. and have all the GM parts.
I know removing the pan only changes some of the ATF. If I also suck ATF out thru the filler tube at the same time will I get much more fluid out, or am I just drawing from the same pan anyway.
Also - is there anything special I need to know about removing the X-brace in dropping the pan. My mechanic is nervous about putting strain on the frame in removing that brace.
TIA
 
Joined
Jan 15, 2004
Messages
2,240
Location
Northern Indiana
Corvette
1987 Z52 Black Convertible
I've decided to change the ATF, filter, etc. and have all the GM parts.
I know removing the pan only changes some of the ATF. If I also suck ATF out thru the filler tube at the same time will I get much more fluid out, or am I just drawing from the same pan anyway.
Also - is there anything special I need to know about removing the X-brace in dropping the pan. My mechanic is nervous about putting strain on the frame in removing that brace.
TIA


I would not suggest sucking it out of the tube. Depending on how many miles are on the transmission you might want to see about getting it power flushed. This way you get everything out of the torque converter, and it clears the whole system.

If you decide to do it yourself, or have your mechanic do it, you don't have anything to worry about removing the x-brace, just crack the doors, and hood while jacking it. I think there is only 3 bolts? on each corner of the x-brace.

If you do decide to do it yourself I would pull the pan so you can change the filter and clean the magnets, and the bottom of the pan.
 
T

tonylong

Guest
Unfortunately there's no one nearby that I trust to do the power flush.
I will drop thepan and clean all up, etc. My current question is wil ALSO sucking from the fill tube remove any aditional fluid than will the draining ?
 

bradfordsvettes

Well-known member
Joined
Mar 28, 2001
Messages
549
Location
Boston, MA area
Corvette
jewel blue 61.cranberry 69 t-top.black rose 92
no, it is all in the pan a flush is the only way for a total change
 
Joined
Jan 15, 2004
Messages
2,240
Location
Northern Indiana
Corvette
1987 Z52 Black Convertible
Unfortunately there's no one nearby that I trust to do the power flush.
I will drop thepan and clean all up, etc. My current question is wil ALSO sucking from the fill tube remove any aditional fluid than will the draining ?


I just took mine to a Transmission shop, if they have the machine to do it, they should be competent enough to do it.
 

bradfordsvettes

Well-known member
Joined
Mar 28, 2001
Messages
549
Location
Boston, MA area
Corvette
jewel blue 61.cranberry 69 t-top.black rose 92
when you drop the pan it is the same fluid you would suck out of the dipstick tube. no additional benifit would be gained steve
 

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