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Trans cooling lines

Old 02-11-2010, 10:16 PM
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Default Trans cooling lines

Checked stickies but couldn't find an answer so here I am. Can someone tell me which line on the trans (4L60E) pumps the fluid to the cooler and which line is the return? I just purchased an auto switch for the cooler fan and the instructions indicate the mounting to be on the return side of the cooler to the trans. Thanks.
Old 02-12-2010, 11:34 AM
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Originally Posted by Formula/LS1
Checked stickies but couldn't find an answer so here I am. Can someone tell me which line on the trans (4L60E) pumps the fluid to the cooler and which line is the return? I just purchased an auto switch for the cooler fan and the instructions indicate the mounting to be on the return side of the cooler to the trans. Thanks.
Just for general knowledge if anyone needs to know this answer, I called our local transmission shop and they told me the upper line is the return line.


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