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Discussion Starter · #1 ·
I have an '06 Sierra 1500 4WD WT, 4.8, 4L60E with tow package. It came with a factory installed trans cooler.

I need all 3 trans lines:

Trans to radiator
radiator to cooler
cooler to trans

Not sure If I'm having a brain cripple day or not but I can't determine which three Delco part numbers I need to order. I tried GMpartsDirect and RockAuto. Anyone know the three lines I need?
 

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Discussion Starter · #2 ·
I have an '06 Sierra 1500 4WD WT, 4.8, 4L60E with tow package. It came with a factory installed trans cooler.

I need all 3 trans lines:

Trans to radiator
radiator to cooler
cooler to trans

Not sure If I'm having a brain cripple day or not but I can't determine which three Delco part numbers I need to order. I tried GMpartsDirect and RockAuto. Anyone know the three lines I need?
This is what I ordered. I hope it's correct.

Lower line 15773661
cooler to trans 15809058
radiator to cooler 15809053
 

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If you wanna post or message me the last 8 of your VIN I can check for you, I work at a GM dealer.
 
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Outlet: 15773661
Inlet: 15809053
Aux: 15809058

That's all based off your VIN so you should be good with what you ordered
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Yeah it probably came in damaged, we have had a couple here and there with stuff like that. We recently had one come in with the front bumper corner dented in pretty good.
 
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