High pressure would raise the boiling point and prevent steam. High pressure won’t reduce heat transfer effectiveness, engine coolant temperature would remain the same.
7 quarts of coolant leaked out, there must be a leak somewhere.
Then what’s your theory for both fairly new radiators springing a leak at the same time? Both radiators must be leaking, otherwise the tech wouldn’t suggest replacing them.
Bullet hole? The OP doesn’t want to tell us about the leak.
The engine radiator might be the only one leaking. Both radiators are removed together, perhaps the tech doesn’t want to reuse the intercooler radiator based on past experiences.
All good info, i myself cant believe both radiators are bad and leaking. i believe its more the bypass valve or possible something else ect… I even seen a bulletin from GM about corrosion on the plugs and sensors on top of the manifold and the bypass valve, what to inspect and if corrosion to replace the valve and connector on 2020 and 2021.
i think im going to take the truck to another shop before i drop 2000.00 on these radiators, and only is available from GM, national back order on the other one so they cant even repair there fix as of now, i even looked up the cost of OEM online at GM and Rock Auto, everywhere the small one is backordered.
Since radiators are on back order, you might consider replacing the radiator cap in case that’s the problem. It’s a cheap fix if it works and minor loss of money if it doesn’t work. It seems like there would be steam under the hood if the cap is bad, but maybe the leak is slow enough that it all dissipates before streaming out from under the hood.
2 Likes