So i have gurgling noises and when the ac is on and i turn it sounds like sand rushing around under the dash by the passanger side. Im almost 100% positive its cause the drain is clogged up . Now how do i drain it is the question. Well more around where exactly is it cause i dont want to poke the wrong thing

 

Also my car over heats and i flushed the system 10 times and put a new tstat in it. Any idea what could be wrong

 

What year and what motor is in your LS?

The AC (Evap drain) is off the lower firewall on the passenger side.... its sometimes a bit difficult to find... However, If.. you could get it up on a hoist it would be much easier to see and clear...

Have you checked the oil recently?
Is it over full? Does it show some colors like a milk shake under the fill cap? Is the inside of the radiator overflow stained or chocolate milk shake stained?

If so....
Its more than likely needs the upper and lower intake gaskets replaced...
along with the coolant elbows...
Depending on what year and motor it has in your Monte...

I'm sure someone else will chime in with other Help/Ideas.

 

To add to the AC drain, I assume this is a FWD Monte? If so, this link should help (also includes pictures):
https://montecarloforum.com/forum/fw...equired-21645/

 

Its a 2003 ls with the 3.4l and my antifreeze doesnt look like that brown stuff anymore . Thats why i flushed it out so many times. And also my oil is at a perfect level and isnt milky