2024 Chevy Tahoe 5.3 V8 water sound in dash

ChevyTah0eZ712024 · April 6

Hear a sloshing noise in the passenger side dash, water doesn't seem to be draining from the AC. Can't find the drain! Seems like it may be clogged. Anyone know where the evaporator drains out in the front? Thanks!

newdude · April 6

Passenger center of the firewall behind the pass. side cylinder head/engine block.

studly · April 6

Every once in a while, I hear a sloshing sound but it doesn't seem to be a problem otherwise.

ChevyTah0eZ712024 · April 11

On 4/6/2026 at 1:50 PM, newdude said:

Passenger center of the firewall behind the pass. side cylinder head/engine block.

Thanks!!! That was helpful had to get to it thru the wheel well, how do you clean it? Any recommendations? Can't even fit my arm back there!

newdude · April 12

5 hours ago, ChevyTah0eZ712024 said:

Thanks!!! That was helpful had to get to it thru the wheel well, how do you clean it? Any recommendations? Can't even fit my arm back there!

Seen guys do it carefully with a thin wire coat hanger.

Jerry455 · April 20

Check the coolant level in the overflow bottle. It is on the passenger side. If it is low, there might be air in the cooling system, heater core, and making sound.