Water noise behind drivers dashboard?

I could swear I am hearing what sound like water sloshing around behind the dash in front of me. Has anyone heard this? Could there be water in the vents behind the dash?

 

Maybe your AC condensation tube is stopped up?

 

I have seen posts about this, but they all seem to refer to drains on the passenger side. This is coming from behind or under the dash in front of the driver. No water on floorboards.

 

Check your coolant. Most likely, you have air in your system.

 

Water engine coolant or A/C coolant?

 

Radiator motor coolant. It will sound like a water trickling sound noise. Usually happens when there is air in the system even if the radiator is filled.

When cold, take radiator cap off and run the truck with the heat on high. The water level in the radiator should come down. Add coolant. When it's filled, the coolant will slowly overflow. Time to put your cap back on.

 

Thanks, I'll try that!