on my 4th heater core!!!!!!! somehow a new heater core every 50,000 miles or so seems reasonable. I guess I'm getting "new" heat! lol and whats funny is that the rest of the system as far as blend door continues to fail as well. what the fricken what?!?!?! and that you have to completely remove the dash. genius fricken idea!!!! way to go Detroit!!!!!!!

take a lesson from chevy!!!!!

The sand is from the place where the motor was purchased, it is clogging up the heater core, still get a little heat,but not the way it should work