My 09 is leaking too. My Indi diesel buddy said he didn’t pressure check to find the leak because that blows the crack open. Then the customer is stuck with the fix right there, with parts sourced locally at sky high prices.
These radiators are susceptible to cracked plastic headers from chassis flex. Now, the OEM radiators are guaranteed for life though.
Ordered my GM radiator before the pressure test. Amazon had a torn box special for $187.11 for the 6.2L. Immediately after ordering it a notice popped up they could no longer deliver them to SoCal!?! A Quick Look online shows radiators just jumped 1-$2h this month. WTF?
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It pays to shop around. If you’re in need of one fast, shipping time can make or break your budget and force you to buy an overseas special.
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