This shit always happens in the F'n coldest part of the winter. Ok, it's the only truck I have and no motorcycle option, since it's 9 degrees out. Need to get to work. Options: 1. Get some radiator stop leak and put in radiator. 2. Bypass heater core with a fitting and bundle up for a while. 3. Drive to work and keep cleaning the fog off windshield and keep and eye on coolant. 4. Buy a heater core and try to DIY (need to tear dash apart outside :huh) What say ye? What's the best stop leak to get? First world problems... I found a HC: http://www.oreillyauto.com/site/c/s...ore&year=1997&make=GMC&model=Jimmy&vi=1164732 Damn, I bet it would cost $500 for a local to put in a $38 part.