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-   1992-1999 (https://www.gmforum.com/1992-1999-91/)
-   -   tranny flush technique? (https://www.gmforum.com/1992-1999-91/tranny-flush-technique-225389/)

xkeithx Nov 23, 2005 01:33 AM

tranny flush technique?
 
has anyone ever tried flushing the transmission by just dropping the pan, removing the oil filter, and putting a hose from the oil filter inlet to a bucket of new ATF, to suck in new fluid and let the old fluid drain out? seems like it would work just as good as paying $100 for a flush. im tempted to try this.. let me know your thoughts.

1993 SLE Nov 23, 2005 01:38 AM

is there a reason that you think that you need to change the trans....does the fluid look burnt or smell....is the trans slipping.....the trans is a delacate thing...you wont get all of the fluid out with dropping the pan, and that might not be a bad thing....... but on the other hand depending on the miles on the car which is see is un the upper 200K a flush might be a bad thing....cause a flush will take everything that was holding the trans together

willwren Nov 23, 2005 06:46 AM

I'm a believer in flushing, but it's easier for the 92-95 SSEi's and other supercharged cars. We have the external trans coolers, so we can simply disconnect up front, crank some out into a bucket, refill, and repeat. The problem is that this still mixes fluid. And it's dangerous and quite messy.

I don't think the hassle of doing it the way you propose would be worth it. I get my flushes for $80 locally, so you might want to shop around. I think you should drop your pan and change the filter first. Then flush.

BillBoost37 Nov 23, 2005 08:28 AM

I'm in agreement with Willwren. Consider the filter and pan first. If you keep noticing fluid issues and discoloration afterward then go forward with a flush.


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