I tried searching the forums for an answer and couldn't really find one. Sorry if I'm re-posting an existing discussion - just point me in the right direction I have a 99 silverado that takes FOREVER to pump hot air in the cab. The truck will get to normal operating temps in about 10 minutes of driving, but when I stop at a light the air will drop in temperature significantly. Also, it will take about 45 minutes of driving before I feel warm and cozy. Being it's the dead of winter and I'm in MO (around 15 degrees everyday) and I HATE being cold, I NEED my heat! I had to replace a quick connect (I think that's what it was called. It was a connector that hooked a hose into the firewall that carried coolant) not to long ago. I found it because my coolant light came on and it was dripping all over the place. I replaced it while it was still warm and I didn't use my heat, so I have no idea if it has had an effect on the heat (I bought the truck in July). I refilled the coolant and everything was fine. I haven't noticed any liquid inside my truck, or in the garage after I've parked it, but my engine compartment does smell funky after I've driven it. Now, I'm assuming it's a heater core, but I figured before I went out and bought one, and started to tear my dash apart I would get another opinion. Did I mention I HATE being cold? Thanks!