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Transmission line help

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Old 12-06-2019, 07:43 AM
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Default Transmission line help

Hey guys, hoping some one could help me out here. The truck is a 03 Suburban with the factory towing package. I removed both hard lines from the transmission, and took them with me to the auto parts store to match them up. I worked a few doubles in between removal and install, now I forgot which one went where. One line went from the transmission to the radiator (lowest port), and the other line coming from the transmission went to the factory external cooler mounted in front of the radiator ( the port that would be closest to the drivers side) Which line goes to the top quick disconnect fitting of the transmission?
Old 12-06-2019, 09:42 AM
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Bottom fitting on trans goes to top fitting on radiator

top fitting on trans goes to lower fitting on radiator
Old 12-06-2019, 10:21 AM
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Originally Posted by MaroonMonsterLS1
Bottom fitting on trans goes to top fitting on radiator

top fitting on trans goes to lower fitting on radiator
I appreciate you helping. One thing, the top fitting on the radiator ( i never touched it, still in its spot) goes to the cooler in front of the radiator. would this mean the bottom fitting on trans would also go to the cooler in front of the rad?
Old 12-06-2019, 08:41 PM
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Originally Posted by AMS13
I appreciate you helping. One thing, the top fitting on the radiator ( i never touched it, still in its spot) goes to the cooler in front of the radiator. would this mean the bottom fitting on trans would also go to the cooler in front of the rad?
1 Line from Top of trans goes to Driver Side of External Cooler in front
1 Line from Bottom of trans goes to Bottom of radiator
1 Line from Top of radiator to Passenger Side of External Cooler


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