Automatic transmissions

Tiny
BLACKMONTE
  • MEMBER
  • 2005 GMC SIERRA
  • V8
  • 2WD
  • AUTOMATIC
I reviewed on your website how to service an automatic transmission. It was very helpful and by the way the vehicle looked like a 2005 GMC Sierra.
I have always wondered why ALL of the fluid inside an automatic transmission is not changed when a tranny is serviced. Isn't it true that just dropping the pan and replacing the filter only replaces 2 or 3 quarts of fluid which is a small percentage of the total amount of fluid? It just seems like with changing engine oil, that changing all of the transmission fluid would be the way to go. Thanks.
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Monday, July 25th, 2011 AT 1:50 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
You can have the transmission flush to take out all the old fluid but its not a very good idea for some people that has experienced problem doing it-in other words can make things worst than it is
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Thursday, October 13th, 2011 AT 3:50 AM

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