Question about 2004 Chevrolet Silverado 1500 Crew Cab

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Blower motor on my 04 silverado will not turn off . even when key is off . if i pull fuse it will work normal when key is on .if i pull out the air con. heater control nobs and controls and put fuse back in the blower runs. it started when i used the air conditioning

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The blower module is shorted out.

Posted on Jun 04, 2010

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1 Answer

NO AIR


I doubt its a relay.
The high blower relay only comes into play on the high setting. You have a 40amp fuse for the blower relay, then a 30amp fuse for the other speeds. The 30amp fuse powers the fan switch, when you turn it to high it activates the high speed relay.
I would check for power at the blower motor on all speeds.

Jul 11, 2013 | 2005 Chevrolet Silverado

1 Answer

My air continues to blow even when the key off out. I would like to know if this is the resistor module. I can't control the speed or even turn it off. The only way it goes off is when you pull


I guess the answer would be maybe.
There is a blower motor control processor and a HVAC control module on the dash. The processor controls the blower motor.
Either component could power and ground the motor.

Feb 04, 2013 | Cars & Trucks

1 Answer

My 2004 silverado crewcab battery went dead and was replaced. The Air conditioning system now only blows through the defrost vents and the dial to change the airflow does not work. Can this be reset?


Turn the key on and make sure the blower motor is working. It doesn't matter what speed. Turn the key off. Pull the hvac1 fuse out of the under hood fuse box. Wait five minutes. Reinstall the fuse. Turn the key on, do not start the engine or touch the heater controls. You should hear the heat swiping through the different modes. After a couple of minutes it should stop. Turn the key off then start the vehicle. It may take several tries but eventually it should recalibrate.

Sep 17, 2011 | 2004 Chevrolet Silverado 1500 Crew Cab

1 Answer

2004 1 ton dual wheel work van Blower motor not working .changed resister.. still nothing checkrd fuses. have 12 volts on red and black wires at resistor.. no other wires at resistor have power even...


The switch doesnt "power the resistor" it GROUNDS it. I dont have a diagram here at home, but how about the wires at the blower motor.If both are hot, theres a bad ground somewhere. Did it act up before it didnt work? So is it a VAN or a truck? 04 or 01?

Sep 01, 2011 | 2001 Chevrolet Silverado 2500HD

1 Answer

A/C blower has stopped. Still has cool air coming out of the vents when I accelerate. What should I check for first? Sometimes I hear a sound that might be from the vaccum.


CHECK HVAC FUSE OR BLOWER MOTOR RELAY/FUSE.IF BOTH GOOD BLOWER MOTOR BAD OR CONTROL SWITCH GOING BAD.IF YOU HAVE TO REMOVE BLOWER MOTOR HOTWIRE TEST IT BEFORE BUYING ANOTHER ONE.BE SURE TO DISARM AIR BAGS SYSTEM WHEN WORKING AROUND DASH OR STEERING AREA.REMOVE AIR BAG FUSES TO DISARM.WAIT 10 MINUTES.WHEN YOU GET READY TO ARM AIR BAG PLACE FUSE IN.TURN ON IGNITION THE AIR BAG LIGHT WILL FLASH 7 TIMES THEN TURN OFF.

Aug 08, 2010 | 2004 Chevrolet Silverado

1 Answer

Why does my blower motor for my 97 silverado does not work?


Check for a blown fuse,
Check for faulty blower motor speed control resistor pack - (usually located in the air flow in the blower ducting),
Check the blower motor is ok; ensure it runs if power directly applied to it.
Check blower motor fan control switch is ok.

Oct 07, 2009 | 1999 Chevrolet Silverado 1500

3 Answers

Blower won't shut off


You will need a Blower motor resistor and maybe a blower motor resistor connector end. If you look under the dash on the passenger side(may need to remove smooth black cover, vents will be sticking out) you will see a connector going straight up into the blower motor resistor(7 wires/slightly in front of blower motor). Pull out the connector and check for melted terminals/wires. If no melted terminals just replace blower motor resistor with part # 89019088 per GM to revert to part before 04 in order to stop blower motor resistor relay from hanging. Let me know if i can help more.

Jan 02, 2009 | 2004 Chevrolet Silverado

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