Tranny flushing...yes or no? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 02-26-2005, 02:31 AM   #1
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Default Tranny flushing...yes or no?

Is having my tranny flushed a good idea? Or is it not good..it'* never been done and the fluid in there is nasty looking.. It going to be done at my dads work.

I just don't want to frag my tranny.

James
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Old 02-26-2005, 03:28 AM   #2
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How many miles are on it? If over 100K i'd be careful.
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Old 02-26-2005, 04:11 AM   #3
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there are mixed opinions on that issue do what you want
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Old 02-26-2005, 09:20 AM   #4
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i dont know much about trannys, but i have heard that if u should have a filter change, drive about 500 miles, then have a flush...
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Old 02-26-2005, 10:31 AM   #5
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I would not take my car to a commercial shop that advertises transmission flushing. I would be concerned that, if not done properly, more harm than good will come of it. I know two people who have had it done - my neighbor John, whose trans was working fine, and my friend Jason, just wanted to do preventive maintenance. Both lost their trannies within a month of having them flushed. I realize this evidence is anectodal and may simply be coincidental, but, combined with other warnings I have read online, I have decided I will not have it done to my car.

Instead, I would jack it up, loosen the pan, drain the fluid, remove and clean the pan, replace the filter and replace the gasket and pan. Refill and go. If I were really concerned, I would repeat in 6 months. This is the safe way to add fresh fluid. You don't get all the old fluid out this way, but if you change it twice, you will get most of it. This is described, I think in Techinfo.

Just my $.02
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Old 02-26-2005, 11:27 AM   #6
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There is another recent tranny flush post, that I posted the links to two or three threads that have all the information laid out for you [pros/cons to flushing and/or just drain 'n' fill].


-justin
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Old 02-26-2005, 08:53 PM   #7
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OK I have to jump on the YES bandwagon here. I bought my '96 with 115k on it and I had a flush done. 15k later it is still working fine and I find the transmission actually downshifts now when going up hills -- it didn't before (I had to press down on the pedal).

At any rate I had heard scary things about flushes too but my tranny is very happy with the flush...
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Old 02-26-2005, 09:43 PM   #8
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Quote:
Originally Posted by bill buttermore
I would not take my car to a commercial shop that advertises transmission flushing. I would be concerned that, if not done properly, more harm than good will come of it. I know two people who have had it done - my neighbor John, whose trans was working fine, and my friend Jason, just wanted to do preventive maintenance. Both lost their trannies within a month of having them flushed. I realize this evidence is anectodal and may simply be coincidental, but, combined with other warnings I have read online, I have decided I will not have it done to my car.

Instead, I would jack it up, loosen the pan, drain the fluid, remove and clean the pan, replace the filter and replace the gasket and pan. Refill and go. If I were really concerned, I would repeat in 6 months. This is the safe way to add fresh fluid. You don't get all the old fluid out this way, but if you change it twice, you will get most of it. This is described, I think in Techinfo.

Just my $.02
Personally, I would listen to Bill Buttermore and do EXACTLY what he described!.
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Old 02-26-2005, 10:26 PM   #9
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Dad'* garage did a double flush...it works sooo good now...he did an engine vac too...

All is well..he said all the 3800 series cars that are regulars haven't had any problems....

James
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Old 02-26-2005, 10:46 PM   #10
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Quote:
Originally Posted by BonnevilleSEman
Dad'* garage did a double flush...it works sooo good now...he did an engine vac too...

All is well..he said all the 3800 series cars that are regulars haven't had any problems....

James
What'* a Double Flush? Isn't once enough? And did they drop the pan to clean it and replace the transmission filter?? I'm not too familiar with an egine vac? Is that similar to using GM'* Top Engine Cleaner??
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