liquide sound under dash

[QBA27]

Hi all,
i hear sound of liquide circulate in the dash when a acélérate .
the coolant level is ok.
the sound is the same as whater circulate in the pipe!
thx for your help.
Francois

[cdru]

The heater core is located behind the radio. Is that where the sound is coming from? It's possible that you have air in your system that that allows things to gurgle. I would also check your carpets, both on top and underneith them to make sure your core isn't leaking. Other then that, there shouldn't be anything else making a liquid sound.

[QBA27]

Yes you have the good word for the sound (gurgle) .Have no leak but the air in the system is plosible.
How remove air ?
Francois

[cdru]

Originally Posted by QBA27

How remove air ?

See this post for how I do it. Our vans are a bitch to get ALL the air out of the system. For some unknown reason GM Engineering decided it would be best to put the bleeder screw at the BOTTOM of the upper radiator hose.