What do you do if your rover 414 has cold air blowing out of the heater?

Where is the shift solenoid on my 1994 blazer 4x4 4.3L vortec? Why after buying a new CD player when the radio is on would the subs work but when you put in CD the subs do not come on? When you drive slow your car makes this high pitched squeaking noise and then when you are at a stop light it makes a grinding sound But when you drive faster the squeaking goes away? How do you remove the rear bumper cover on a 2006 trailblazer? Where can I buy cheap tires? Can antifreeze burn? Does mercon v transmission fluid work in a 1991 buick? Why does your drive light turn on and off on your crv Honda 2002? What are the differences between a coupling and clutch? What can you do to Erase check engine light? What are the benefits of hydrogen filled tires compaired to normal air? How do you replace rear crv windshield washer nozzle? Where is the lighter fuse for a Ford Ranger 1999? Does the 2005 cadillac cts have a transmission dip stick? Can a bad fuel filter cause truck to flood and not start? How do you replace the power steering pressure hose on a 2005 Cadillac SRX? What oil does a 1994 ktm 400 take? Is there a voltage regulator for the alternator for a 2002 dodge Dakota? How long does it take to die from drinking antifreeze? How do you remove backdoor.haxdoor.e?