2005 Buick La Crosse Sloshing noises

Tiny
YOIJPC
  • MEMBER
  • 2005 BUICK LA CROSSE
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 67,000 MILES
I have a strange noise that is a sloshing of water or liquids that is very noticeable when accelerating, decelerating or sharp turns. Basically there is wave created when you accelerate the vehicle and no one can seem to find where it is coming from.

I have had someone say that they thought it was air pockets in the cooling system which I can imagine would cause such a large rush of water that it would feel being on a waterbed. They have burped the system and that hasn't solved the problem. Someone mentioned the AC drainplugs being clogged and that hasn't seemed to be it either. Is it possible that water is building up in the firewall?

I don't believe that this is exclusive to my car because my brother has an '03 Chevy Impala that is doing the same thing.
Wednesday, August 19th, 2009 AT 6:45 AM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,645 POSTS
Chances are the heater core is what you are hearing. Make sure the coolant level is full. When filling it, make sure the heater is on.

Let me know if it helps. Also, if there isn't a bleeder on the t-stat housing, loosten the return hose from the heater core to bleed it.
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Thursday, March 4th, 2010 AT 11:22 AM

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