Radiator replacement / transmission cooler - Pontiac G8 Forum: G8 Forums - G8Board.com
 
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post #1 of 3 (permalink) Old 11-04-2013, 12:03 PM Thread Starter
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Question Radiator replacement / transmission cooler

This past weekend the radiator on the V6 sprung a leak. The leak has since been temporarily fixed, but still looking to replace the radiator in the future. The AC-Delco website lists three different radiator assembly part numbers, 21836, 92219558, and 92234040 which all show to fit the V6. Called their customer service department and the representative said the correct part number is 21836. However, search results using this part number yield a hose. Therefore, which of the above part numbers is correct regarding a radiator assembly on a 09 V6? Are there any good aftermarket alternatives available?

Secondly, the transmission cooler lines are connected to the bottom of the radiator in order to use the cooling capacity of the radiator to cool the transmission fluid. What options are available for a separate transmission cooler bypassing the radiator? I don't race nor track the vehicle, but would hate for the lower compartment to rupture and the antifreeze becomes contaminated with transmission fluid. On the other hand, it the chances of this happening are slim-to-none, then disregard the question.

Finally, how accurate is the transmission sump temperature reading displayed during engineering mode on the drivers information center (DIC)?

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post #2 of 3 (permalink) Old 11-05-2013, 10:49 PM
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It is 92219558 without a doubt.

I wouldn't worry about cross contamination on a GM. In fact I've only seen it once on a gm and it was extenuating circumstances. It's worse for the coolant to enter the transmission oil than vice versa. But there have been no cases of cross contamination on G8s as far as I know and for that reason I'd buy a GM radiator- because we know what to expect from it.


2008 Pontiac G8 | LY7 V6 | 6L50 AT Conversion | 3.45 LSD Rear Differential | Panther Black Metallic | GT Tail Lamps | Red Leather Seats | GXP Rear Diffuser

1957 Oldsmobile 98 | 371 Rocket V8 | J2 3x2 Tri Power| Jetaway Dual Coupling Hydra-Matic | Sierra Gold | Magnaflow Dual Exhaust | Autronic Eye
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post #3 of 3 (permalink) Old 11-06-2013, 01:32 PM Thread Starter
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Sweet. Thanks for the additional information kgenesse. Might tackle the project within the next few months or so. A mechanic at a body shop said the a/c line(s) has to be removed to replace the radiator, hopefully that's not the case.

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