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Check the fuse for the blower motor. If its okay, check for power at the heater motor. If you have power, and no blow, the blower motor will need to be replaced.
REPLACE THERMOSTAT.IF ALREADY DONE.CHECK HEATER BLOWER MOTOR SEE IF POWER GOING TO HEATER BLOWER MOTOR.IF YES BLOWER MOTOR BAD.IF NO POWER GOING TO BLOWER MOTOR CHECK AC AND HEATER CONTROL FUSE AND CHECK BLOWER MOTOR FUSE AND RELAY IF ALL IS GOOD CHECK SEE IF POWER GOING TO AC AND HEATER CONTROL SWITCH IF YES THE AC AND HEATER CONTROL SWITCH COULD BE BAD.
CHECK BLOWER MOTOR FUSE AND RELAY.IF ALL IS GOOD.BEST TO REMOVE BLOWER MOTOR HOTWIRE IT.IF DONT WORK REPLACE BLOWER MOTOR.IF BLOWER MOTOR WORKS.YOU HAVE FAULTY CONTROL SWITCH OR MODULE.BESURE TURN OFF RADIO FIRST YOU NEED TO REMOVE NEGATIVE BATTERY CABLE.WAIT 15 MINUTES BEFORE WORKING UNDER DASH.THIS WILL DISARM AIRBAG AND BCM UNDER DASH.YOUR BLOWER MOTOR UNDER DASH ON THE PASSENGER SIDE FAR TO BACK.YOU NEED TO REMOVE BOTTOM PANEL TO GET TO IT.
CHECK HEATER AND AC IGNITION 10 AMP FUSE UNDER HOOD JUNCTION BOX.IF ALL IS GOOD CHECK BLOWER MOTOR FUSE AND RELAY.IF ALL LOOKS GOOD. TURN ON CONTROL SWITCH TO CHECK TO SEE IF POWER GOING TO BLOWER MOTOR IF YES BLOWER MOTOR BAD.IF NO POWER GOING TO BLOWER MOTOR FUSE AND RELAY GOOD.YOU HAVE BROKE WIRE BETWEEN SWITCH AND BLOWER MOTOR OR CONTROL SWITCH FAULTY. TO GET TO BLOWER MOTOR ITS LOCATED UNDER THE DASH ON PASSENGER BEHIND GLOVE COMPARTMONT YOU DONT HAVE TO REMOVE GLOVE BOX ITS JUST BELOW IT FAR BACK.YOU NEED TURN OFF RADIO FIRST THEN DISCONNECT NEGATIVE BATTERY CABLE WAIT 20 MINUTES THIS DISABLE AIRBAGS AND THE BCM.REMOVE BLOWER MOTOR HOTWIRE IT TO SEE IF ITS WORKS. IF NO BLOWER MOTOR NO GOOD.IF BLOWER MOTOR GOOD THE AC AND HTR CONTROL SWITCH IS BAD DEALERSHIP FIX.
CHECK BLOWER MOTOR FUSE OR RELAY.IF BOTH IS GOOD BLOWER MOTOR FAULTY.HOTWIRE BLOWER MOTOR TO SEE IF IT RUNS IF NO REPLACE IF RUN YES CONTROL SWITCH COULD BE BAD OR BLOWER MOTOR GETTING POOR GROUND.
CHECK BLOWER MOTOR FUSE AND RELAY.IF BOTH GOOD.REMOVE BLOWER MOTOR HOTWIRE IT.IF DONT WORK REPLACE BLOWER MOTOR.IF BLOWER MOTOR WORKS.HEATER AND AC CONTROL SWITCH IS BAD.
check 4WD fuse also fuse and relay to heater blower.if all is good remove and hotwire blower motor using jumper wires to battery.if blower motor dont work replace it.if it work you have a faulty blower switch or resistor bad.
IT COULD BE BLOWER MOTOR NOT GROUNDED.YOUR BLOWER MOTOR FUSE AND RELAY COULD BE BAD.MAKE SURE POWER IS GOING TO BLOWER.MOTOR.CHECK TO SEE IF POWER IS GOING TO SWITCH IF SO SWITCH COULD BE BAD.HOT WIRE BLOWER MOTOR USING JUMPER WIRE AND POWER FROM THE BATTERY.IF BLOWER MOTOR WORKS.YOU HAVE FUSE RELAY AND SWITCH PROBLEM.MOST THE TIME WHEN RESISTOR BAD.YOUR BLOWER MOTOR ONLY WORK ONE SPEED SOME TIME.
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