2005 C6 Automatic Radiator replacement?
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Joined: Dec 2019
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2005 C6 Automatic Radiator replacement?
I was told my radiator is cracked. Going to buy a replacement radiator myself to save money.
can anyone point me to a cost friendly replacement radiator? Also, does it need to come with the oil cooler or can I just buy the radiator?
I was told by the mechanic that the radiator size was 2 5/8 inch thick and must be for the automatic c6
thanks for your help
can anyone point me to a cost friendly replacement radiator? Also, does it need to come with the oil cooler or can I just buy the radiator?
I was told by the mechanic that the radiator size was 2 5/8 inch thick and must be for the automatic c6
thanks for your help
Le Mans Master
Joined: Jul 2010
Posts: 6,021
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I was told my radiator is cracked. Going to buy a replacement radiator myself to save money.
can anyone point me to a cost friendly replacement radiator? Also, does it need to come with the oil cooler or can I just buy the radiator?
I was told by the mechanic that the radiator size was 2 5/8 inch thick and must be for the automatic c6
thanks for your help
can anyone point me to a cost friendly replacement radiator? Also, does it need to come with the oil cooler or can I just buy the radiator?
I was told by the mechanic that the radiator size was 2 5/8 inch thick and must be for the automatic c6
thanks for your help
Thread Starter
Advanced
Joined: Dec 2019
Posts: 83
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Le Mans Master
Joined: Jul 2010
Posts: 6,021
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one of buddies had to cut the ears to make it fit. And one had a smalll leak
Thread Starter
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Joined: Dec 2019
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should an auto mechanic be able to make it fit or should I be concerned?
Le Mans Master
Joined: Jul 2010
Posts: 6,021
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I had to do some pretty good grinding.
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Last edited by NELH; Nov 27, 2025 at 09:31 AM.
Safety Car
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From: Etobicoke (Toronto) Ontario
If you’re speaking of the engine oil coolers, only M6 base cars with Z51 got those from the factory. From 2005 - 2007, the cooler was a heat exchanger mounted in the driver’s side radiator end tank. In 2008, GM moved to an air cooled oil rad mounted in front of the AC condenser on the driver’s side. All the Z51 optioned M6 cars used the heat exchanger in the passenger side radiator end tank to cool the transmission. All cars with an automatic use the same passenger side end tank to cool the transmission. Non Z51 base M6 cars got no extra cooling.
Melting Slicks
Joined: May 2010
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From: Long Island New York
If you’re speaking of the engine oil coolers, only M6 base cars with Z51 got those from the factory. From 2005 - 2007, the cooler was a heat exchanger mounted in the driver’s side radiator end tank. In 2008, GM moved to an air cooled oil rad mounted in front of the AC condenser on the driver’s side. All the Z51 optioned M6 cars used the heat exchanger in the passenger side radiator end tank to cool the transmission. All cars with an automatic use the same passenger side end tank to cool the transmission. Non Z51 base M6 cars got no extra cooling.
Instructor
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From: The Midwest
@FatsWaller is correct about the engine oil cooler and is correct about the m6 & auto transmission cooling options.