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To Flush Or Not To Flush


Norton1

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I'm at 50,000 on the tranny and am having the dealer change the fluid and filters for me. The guy I talked to said they would flush the system to get all of the particles out as well as change the filters and such.

I did a search and could not find the discussion a while back about why one should not have the tranny flushed. Instead just change the drainable fluid and filters.

Anyone?

Thanks

Steve

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I'm at 50,000 on the tranny and am having the dealer change the fluid and filters for me. The guy I talked to said they would flush the system to get all of the particles out as well as change the filters and such.

I did a search and could not find the discussion a while back about why one should not have the tranny flushed. Instead just change the drainable fluid and filters.

Anyone?

Thanks

Steve

Do not let anyone talk you into a transmission flush! Just have them drain and refill with Dexron 3. That is the only procedure that is recommended in the GM service manuals.

The only filter in the 4T-80E trans is behind the side cover and that typically requires transmission removal to change it. There is a technique where that filter can be changed without removing the trans. but it is not cheap.

You can never be sure that the flush machine is not contaminated with debris from another transmission that has failed...

Kevin
'93 Fleetwood Brougham
'05 Deville
'04 Deville
2013 Silverado Z71

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I'm at 50,000 on the tranny and am having the dealer change the fluid and filters for me. The guy I talked to said they would flush the system to get all of the particles out as well as change the filters and such.

I did a search and could not find the discussion a while back about why one should not have the tranny flushed. Instead just change the drainable fluid and filters.

Anyone?

Thanks

Steve

Do not let anyone talk you into a transmission flush! Just have them drain and refill with Dexron 3. That is the only procedure that is recommended in the GM service manuals.

The only filter in the 4T-80E trans is behind the side cover and that typically requires transmission removal to change it. There is a technique where that filter can be changed without removing the trans. but it is not cheap.

You can never be sure that the flush machine is not contaminated with debris from another transmission that has failed...

yes...don't flush...

Chris

Christopher Petro

94 sts

67 coupe de Ville

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If it's brown flush it down if it's yellow let it........ oh we're talking trannys eh? Steve, these guys are correctamondo. No flushing!

"Burns" rubber

" I've never considered myself to be all that conservative, but it seems the more liberal some people get the more conservative I become. "

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I would definately agree with the NEVER flush.

I have seen some mechanics use the same filter too...they will spray the old one out(if it is in good shape) and save you some money.

Big Jay

Life is too short to grow up!

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Thanks to all of you - Thank you Ranger for the specific article. That was what I was looking for.

Steve

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I wish I would have found this post sooner. I have two friends that found out the hard way not to flush. They have had nothing but problems since. This was a wile ago now but one day the problems went away in both veichles. Then everyting was Ok again. It was the day the veichles were sold.

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This was a wile ago now but one day the problems went away in both veichles. Then everyting was Ok again. It was the day the veichles were sold.

:lol::lol::lol::lol:

Big Jay

Life is too short to grow up!

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