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Nop. Looking through the grill all I see is cooler radiators. I am going to check with dealer to. Thanks

Are they behind trans cooler and all I can see is small coolers like a/c.and trans

I don’t know. Can’t see in there. I looked them up on Google to see what you are talking about and I can see how it would make engine run hit. Getting ready to go look at truck and try to see them first hand. Thanks

I now see what you are talking about. I googled these shutters. I can definitely see why it would change engine temp. O boy more time at the dealer. Thanks.

Sounds like something the dealer would have to check out. 🤷🏼‍♂️

This is the only air duck I see in front of truck. Can’t tell if it’s open or not.

I have a Chevy. What opens and closes them

Can you see shutters looking in the grill

What Lou ears are you speaking of.

? Don’t have any idea. Truck spent 3 months at dealer. New radiator hose new egr valve new coolant control valve and then a new water pump. They gave up. Truck runs at 210 and above. Most of the time it’s at 230 or higher.

2020 3.0 duramax runs Hot. Temp gauge reads 210 to 235. Ran at 210 for first 65,000 miles and dealer doesn’t know what to do to fix it. Told me that’s the best they can do?