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2013 Chevrolet Suburban
Platform: GMT 400, 800, 900

Transmission fluid change ?

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Old November 20th, 2011, 9:41 PM
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Default Transmission fluid change ?
I have a 2004 Suburban and I'm going to drop the pan and change the trans fluid and filter. I also want to change as much fluid as possible. Can somebody tell me which trans line at the radiator comes from the transmission and which line goes back to the transmission.
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Old November 21st, 2011, 9:09 PM
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Once the truck is warmed up the hotter one is going to be your IN and the cooler one will be OUT.
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Old November 22nd, 2011, 5:16 PM
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The feed TO the radiator is usually the bottom line. The return is the top line most of the time.
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