HEATER CORE LEAKING/GOT FAN MOTOR WET/MAY HAVE CAUSED THE FAN SWITCH TO BURN OUT 91 WIRE/CONNECTOR. REPLACED THE CONNECTORS. NOTHING. CHANGED THE FAN MOTOR. WAH LAH... FAN BLOWS L, M, HIGH. YEAH. BUT NOW THE A/C WASNT BLOWING COLD... POPS ADDED A CAN OF FREON... STARTED TO BLOW COLD... AND THEN LOCKED UP. STARTED TRUCK, WORKED A SECOND, LOCKED UP. DID WE CONNECT A WIRE WRONG OR BYPASS A RELAY OR SOMETHING... OR IS IT POSSIBLE THE CLUTCH OR COMPRESSOR JUST FQUIT? HAD WORKED FINE BEFORE ALL THIS...
SOURCE: Heater only blows cold air
Check both heater hoses under hood to see if they get hot, if they do the heater is fine. need to check to see if the selection doors inside the unit are opening and closing.
SOURCE: my ac blows hard, added freon, clutch not turning could it be fus
If the blower is working,it indicates your car blower system is ok.If the freon system is contain the correct amount and still clutch is not turning when the A/C switch is in the on position check the supply for the compressure.If there is supply that means the problem with the A/C compressur clutch coil and apply the repair procediure or replace A/C cpmpressure.If there is no supply Check the fuses,wiring system and A/C system pressure switch.
SOURCE: 99' Escalade a/c front vent blows cool air an rear blow cold air.
i have the same problem, my rear a/c blows great very cold, the front a/c blows but it is not cold at all. I had the the a/c seviced and it was vacumed and correct ammount put back in, no problems, the front still blows but it is not cold, i have checked everything and the a/c guy said it might be the door not opening. any help? still not working
SOURCE: heater blower motor only works on high
You most likely need to replace the ignition switch. Sounds weird, but check out other posts. It works.
SOURCE: How do I replace heater core in 98 chevy
before you think it is your heater core try replacing your thermostat or flushing your system your heater core could be clogged feel the two hoses going into the heater core at the firewall they both should be hot
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