Location of fan resistor switch

[jrservices]

Looking for the location of the fan resistor switch on my 1994 chevy truck. Fan speed control works only on 3 & 4, so I'm pretty sure that is it. Any info would be helpful. I have a new one on order.

[OLD HAT]

I replaced the resistor pack in the wifes car last summer, I would have never found it if I did not buy the Haynes book.
The resistor pack should be in the air duct system somewhere close to the fan motor.
good luck with it, after I replaced it the fan motor went out and I had to do it all over agian.

[Woody]

Looking for the location of the fan resistor switch on my 1994 chevy truck. Fan speed control works only on 3 & 4, so I'm pretty sure that is it. Any info would be helpful. I have a new one on order.

Normally a few different coils of Nichrome wire located IN the airstream (to keep them cool). Look in/on the ductwork, normally under the hood, for a connector. It should have 4 or so wires, and normally 2 screws securing the assembly to the plastic duct. Pull the plug, remove the assembly. You can normally see if the coils have burned through.

Keep in mind that these normally exceed the life of the vehicle, so you may be looking at a new blower motor at some point in the near future.

[hardboiled]

Old Hat, if something goes again, check for a loose ground somewhere in that system. That could account for things burning out. At a previous job I would go through switches, resistors and motors regularly on an LTL9000. The mechanic kept throwing parts at it. I got tired of squeegying the inside during rainy days and did my own work on it, finding a loose ground screw to the dash frame.

[btammo]

My Chevy's did the same thing. Resistor went bad, but it was a direct result of the blower motor being too hard to turn. Would heat up the resistor and melt it. Fan motor for my trucks were like $200 from Carquest....Advance had em for maybe 150. since it is an older truck, I just bought a used one for $20 and put it on.

[jrservices]

My Chevy's did the same thing. Resistor went bad, but it was a direct result of the blower motor being too hard to turn. Would heat up the resistor and melt it. Fan motor for my trucks were like $200 from Carquest....Advance had em for maybe 150. since it is an older truck, I just bought a used one for $20 and put it on.

I assume your resistor was on the ductwork, next to the fan, or in the vicinity? Probably replace it tomorrow, along with the blower. I got the parts already. PS, new blower for about $55.00.:laughing: :laughing:

[hardboiled]

jr I jusst did a quick search and on one fourm they said to remove the glove box liner to bet to the blower motor. I would imagine that would get you to the resistor also. Good place to start anyway. I even think that is maybe how I get to the one on my dodge.

Here's a copy of one I found for a 93 model;
To get access to the heater resistor you will have to take the passenger side glovebox liner out by unscrewing the screws holding it in place.You should see where 2 or 3 wiring connectors are secured.Look above and behind these connectors and you will wiring connector that appears to plug directly into the air circulation housing,but actually that is the resistor screwed into the housing.Disconnect the wiring connector and the2 screws holding it into place and it will pull right out.There is not a lot of room to work back there so you may have a little trouble getting to that right side screw.Good luck

[jrservices]

jr I jusst did a quick search and on one fourm they said to remove the glove box liner to bet to the blower motor. I would imagine that would get you to the resistor also. Good place to start anyway. I even think that is maybe how I get to the one on my dodge.

Here's a copy of one I found for a 93 model;
To get access to the heater resistor you will have to take the passenger side glovebox liner out by unscrewing the screws holding it in place.You should see where 2 or 3 wiring connectors are secured.Look above and behind these connectors and you will wiring connector that appears to plug directly into the air circulation housing,but actually that is the resistor screwed into the housing.Disconnect the wiring connector and the2 screws holding it into place and it will pull right out.There is not a lot of room to work back there so you may have a little trouble getting to that right side screw.Good luck

Hardboiled, you are the man. It was located directly behind the glovebox, & fairly easy to change. Changed out the blower motor at the same time, bearing were about shot, & was running slow. Thanks, everyone.:laughing: :laughing:

[hardboiled]

Make sure you check the grounds too. You can probably find that by following the wiring to the switch. Poor ground=heat buildup=failed parts, including bearings. Glad you got 'er fixed.