Hey, I was just reading an old thread of yours on your 97. what fixed your heater? mine blows warm air on the low settings. but on high its cold. I just changed thermostat. no bubbles in line. flushed radiator a while ago that didnt fix. thats why i didn thermostat. it was defiantly broke. but idnt fix the problem. I am going to try to flush my heater core this weekend. if you dont mind texting me I will give y0ou my number an y assistance is fantastic. illinois is getting cold!