hissing noise

I have a 96 GC when I switch off engine , I can hear a hissing noise from the front lefthand side of the grill .I did have a minor rad leak, curred with a leak stop. could it be somthing to do with AC ?,there is no liqiud leak I can see , just a hiss that fades after a minute or two ,anyone any ideas ??

what about your rad. cap loosing presure

Did`nt think of that ,checked it seems ok ,thanks for the thought

The hissing is your A/C this is normal and nothing to worry about.

Thanks for that 4 wheels ,a bit strange that GC`s hiss when you switch them off ,but hey I can live with that :screwy: