09 Silverado coolant odor

[EhrmyCat]

I am a newbie to this forum. I hope I can get some input for my issue please. I have had an 09 Silverado 5.3 for a couple years now. It has a slight coolant smell coming in the open window when I'm driving and when I stop(when hot). I have added no antifreeze, the level stays good and pressure in the reservoir. I cannot smell it in the cab when the window is closed and I can't see any leaks or coolant on the floor when I park in the garage. The truck has 50K miles. I am at a loss. Is it something I should worry about? Should I take it in to check gaskets etc? It seems to run fine?

[gmtech4]

I am a newbie to this forum. I hope I can get some input for my issue please. I have had an 09 Silverado 5.3 for a couple years now. It has a slight coolant smell coming in the open window when I'm driving and when I stop(when hot). I have added no antifreeze, the level stays good and pressure in the reservoir. I cannot smell it in the cab when the window is closed and I can't see any leaks or coolant on the floor when I park in the garage. The truck has 50K miles. I am at a loss. Is it something I should worry about? Should I take it in to check gaskets etc? It seems to run fine?

You have to get under the truck with a light and LOOK ,

 

Look everywhere very carefully !!!!

 

Could be 10 places . Where do you want to start ,

 

If it's not leaking any why bring it in ?? Confusing

 

Pressure tester maybe required

[CapitalTruck]

Pressure test overnight...and know that some small leaks burn off when the car is being driven before you're able to observe them. Hopefully an overnight pressure testing will reveal them.