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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

Changing Transmission Fluid/Maintenance

Old Apr 14, 2008 | 12:46 PM
  #11  
freyguy's Avatar
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Default RE: Changing Transmissin Fluid

Here's the way I do them:[/align][/align]First drop the pan and drain all that fluid, and change the "filter". Be sure everthing is clean and put it back togethter.[/align]Fill through dipstick, the pan capacity of fluid.[/align]Find the transmission fluid cooler line, and trace it to the radiator/cooler.[/align]Disconnect it, and run a line from the output, down to a bucket with measurments on it. (Be sure about the output. On mine, I thought the fluid would go into the top of the radiator, and out the bottom, but it's exactly the opposite.[/align]Once hooked up and ready to go, have a buddy watch the bucket and hose, and start the car, and begin to run through gears slowly.[/align]Have your buddy hollar when you get to 3 quarts or so, stop the engine, and put 3 fresh quarts in. [/align]Continue to do this until all of the capacity is replaced, and I even do an extra run just to try to get as much fresh fluid in as possible.[/align][/align]I did this because I wanted Amsoil in there, and no local shop would do it for me. It's a bit time consuming, but not too hard at all. Now I'll just plan on replacing the pan fluid with fresh more often, and it should be just fine.[/align]
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Old Apr 14, 2008 | 1:19 PM
  #12  
Brishanbo's Avatar
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Default RE: Changing Transmissin Fluid

Thanks for your suggestion!
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Old Apr 14, 2008 | 4:55 PM
  #13  
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Default RE: Changing Transmissin Fluid

ORIGINAL: freyguy

Here's the way I do them:[/align][/align]First drop the pan and drain all that fluid, and change the "filter". Be sure everthing is clean and put it back togethter.[/align]Fill through dipstick, the pan capacity of fluid.[/align]Find the transmission fluid cooler line, and trace it to the radiator/cooler.[/align]Disconnect it, and run a line from the output, down to a bucket with measurments on it. (Be sure about the output. On mine, I thought the fluid would go into the top of the radiator, and out the bottom, but it's exactly the opposite.[/align]Once hooked up and ready to go, have a buddy watch the bucket and hose, and start the car, and begin to run through gears slowly.[/align]Have your buddy hollar when you get to 3 quarts or so, stop the engine, and put 3 fresh quarts in. [/align]Continue to do this until all of the capacity is replaced, and I even do an extra run just to try to get as much fresh fluid in as possible.[/align][/align]I did this because I wanted Amsoil in there, and no local shop would do it for me. It's a bit time consuming, but not too hard at all. Now I'll just plan on replacing the pan fluid with fresh more often, and it should be just fine.[/align]

The only problem with doing it this way, is when you change the filter first, you run all 14- 20 litres of dirty fluid through a clean filter when you are flushing it, making it dirty again.
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