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Old 07-17-2018, 12:51 PM   #1
m1super90
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2003 VUE 3.0L
Default 2003 3.0L Vue - Radiator change-out

175,000 miles on the original radiator. I hear that's pretty good. Now I have a slow leak at the passenger side tank-to-core fitting. Looks to be half way up the radiator tank.

I have not been able to find a discussion on whether or not the ATF cooling is done within the radiator or not. The factory service manual diagrams and notes don't make this clear, to me, and looking at the ATF lines before taking the fascia off isn't clear either.

Looks to me like the lines clip to the radiator on the driver's side, run over to the passenger side, up the radiator and possibly run into a heat exchanger in front of (and outside) the radiator. That, or they go into the radiator tank in a spot I can't get my eyes on yet.

Main question is, do I have to be careful to get a radiator which supports ATF cooling?

Secondary question is, can someone tell me the cooling mode? Aka, internal or external to the radiator?

Thanks!

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Old 07-24-2018, 09:16 AM   #2
m1super90
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2003 VUE 3.0L
Default Re: 2003 3.0L Vue - Radiator change-out

ACDELCO 22664740

I found the answer on Rockauto by searching for 'transmission cooler' for my engine. It's an air-to-oil type cooler that's sandwiched between the A/C condenser and the radiator.

I like this approach. No chance of mixing ATF with coolant and it's a discrete part that can be changed, if needed.

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