[mxz0588]

when I first start my truck somethimes, even when it is warm you can hear coolant sloshing around in the heather core, moresow when you rev the engine. is coolant slushing up in the core whe it sits for a wile? anyone have any ideas if this is good or bad sign?

thanks for the help

 

[Clunk]

It may be a little air in your cooling system. You might check and clean your radiator cap seal and look at the coolant level in the overflow jug.
Be sure the coolant level is up to the HOT mark when the engine is at normal running temperatures.

 

[hooknit]

wow you can hear that in your heater core