[dmarty]

Are talking about the heater core pipes or the plastic quick connections on the heater core? My ’99 had plastic quick connections for the hoses at the heater core. They were right at the firewall. I had a gurgling noise in the dash when I used the heater and was told to remove the quick connects and slide the hoses directly on the heater core pipes. Worked great, no problems. If your plastic quick connects are broke, remove them and put the hoses directly on the heater core pipes.