"liquid Sound" In 1995 S-10 Blazer

[bechard]

I just had my 138k mile Blazer's coolant flushed. Now when I accelerate I hear a liquid sound in the cab. The sound started happening immediately after the flush. I've searched the web and have found about 5 different explanations. Is there any more information I can provide to help me narrow the cause down?

[GMTRUCKTECH]

Sounds like your heater core has air in it or has a blockage. Try letting your vec sit over night with radiator cap off you may get lucky and the air will excape. Or try just driving it. It's possible the air may pass though also. If you have a blockage then your screwed. Heater cores on blazers are a bitch cause the dash has to be removed and so does the evap case.

[bechard]

Sounds like your heater core has air in it or has a blockage. Try letting your vec sit over night with radiator cap off you may get lucky and the air will excape. Or try just driving it. It's possible the air may pass though also. If you have a blockage then your screwed. Heater cores on blazers are a bitch cause the dash has to be removed and so does the evap case.

 

 

Thanks for the reply. I should have mentioned that when I turn on the heater, the air seems to only come out the defrost vent and maybe the floor vents. Does that narrow it down even more?

[GMTRUCKTECH]

Sounds like your heater core has air in it or has a blockage. Try letting your vec sit over night with radiator cap off you may get lucky and the air will excape. Or try just driving it. It's possible the air may pass though also. If you have a blockage then your screwed. Heater cores on blazers are a bitch cause the dash has to be removed and so does the evap case.

 

 

Thanks for the reply. I should have mentioned that when I turn on the heater, the air seems to only come out the defrost vent and maybe the floor vents. Does that narrow it down even more?

 

 

That has nothing to do with the noise. You have a actuator issue or a vacuum leak.