Here in my 2006 GTO the stock radiator sprung a leak through a stress relief crack. So I upgraded to a bigger full aluminum Cold Case race radiator for the fix. Best radiator for pontiac gto
‪@coldcaseradiators‬

Radiator $360 https://gtog8ta.com/04-06-gto/05-06-g...
2005-2006 Pontiac GTO LS2 Aluminum Dual Core Radiator. COLD CASE

Coolant Funnel Kit,Spill Proof Funnel Bleeder with Adapters $20:
https://www.amazon.com/dp/B09XT1XC55?...

Most reproductions available are only one row or fool you into thinking a 3 or 4 row is better! Upgrade your cooling system today with our new 2 row 1" fin aluminum radiators.

These COLD-CASE radiators are Tig welded 100% aluminum and absolutely beautiful.
Don't buy a 3 or 4 row aluminum radiator! It doesn't cool as good as these oversize 2 row models.

These radiators come complete with OE style fittings. For MT or AT cars.

-100% TIG welded
-All Aluminum
-16 fins per inch
-Corrugated fins that give more surface area and more thermal transfer
-Pressure tested
-For auto and standard trans (auto-trans-cooler)
-OE style fittings
-Direct fitment for 05-06 GTO
Confirmed OTR Intakes That Fit:
Vararam
Svede OTRCAI (Will need to trim rubber doughnuts)
X-Air
Duspeed (Will need to trim rubber doughnuts)

0:00 COOLLLDDD CAASSSEEE
0:45 Troubleshooting the leak
1:50 HOW-TO Pressure test the radiator
3:46 1st Step What has to come off
5:10 Removing old radiator and hoses
6:09 Removing condenser
6:51 Pulling out old radiator
8:10 Old vs. New radiator and swapping parts
9:57 Putting in new Cold Case Radiator
12:55 Testing new radiator
13:40 Refilling and bleeding new radiator
15:12 TIP How to save money on buying radiator fluid
16:03 Startup and finish