And Then There Was One. Where are Chris and Shannon?

Shannon is away in sunny Florida and Chris is snowbound. Russ takes the wheel a little lonely. Will he make it? 1. Why does my 1995 Jeep Cherokee 4x4 have a clunk from the rear end while in 4-wheel drive? 2.Why does my 1995 Chevy Truck die while running then I have to put the gas pedal to the floor to start it? 3. My 2003 Dodge Durango has a broken blower motor. I have replaced the blower and resistor several times. How do I fix it? 4. Should I use Oil Additives in my car? I am in Canada. 5. Ford Escape escapes us. 6.Why is my 2005 F250 Ford Truck stuck in low 4-wheel drive? 7. Are my head gaskets bad on my 2000 Jeep Liberty? Coolant leaks from the exhaust.