Question about 1999 Chevrolet Silverado 1500

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1998 K2500 How to replace defective fan switch on dash panel????????? THANKS

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  • dave829 May 28, 2009

    THANKS,

    But I am convinced it is the switch on the dash. It started to 'feel' funny to rotate through the various fan speeds a while ago. Now the switch has definite jerky spots when it is rotated and there is no blower activity at all. How can I remove the dash or trim panel to get at the switch? I will save your blower motor removal info just in case the switch checks out OK.

    THANKS AGAIN

    Dave

  • dave829 May 28, 2009

    1998 K2500 defective heater blower dash switch. It is a rotating knob with 3 or 4 speeds. How do I get at this switch? Any tips on trim removal etc. to gain access to this switch?
    Thanks Dave

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It is most likely your Blower Motor Resistor it is located near the blower motor under right side of dash and it looks like this..... 1998 K2500   How - 8dd6fc3.jpg
If you are determined to try to replace the actual switch the dash actually pulls apart quite easily.  If I remember correctly you actually just pop the dash trim around the radio and other controls out with a small screwdriver, no screws to take out, it's just held in with spring clips.  Once you get that off, you will need a phillips head screwdriver to loosen the part that holds the fan switch.  Like I said that part would be easy.  I think you would have to get the switch directly from GM.  I would take a look at the blower motor resistor though as this is not a totally uncommon problem for the GMC and Chevy trucks.  Let me know if you have any more questions.  Thanks for rating my response and for using FixYa!

Posted on May 28, 2009

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Its the blower motor. After I removed it, I spun the thing and groaned just the same.

Sockets needed are 5.5mm for the 5 blower screws; 9/32 for other cap screws if you choose to.

This is not too difficult of a job. First of all, if you have a manual and it says the dash has to be removed, burn the manual. Do not just throw it away, since it is possible someone could go through your trash and end up with this terrible manual. Thats just what my service manual said, remove dash and all dash components. About half way through that job, I discovered how simply the blower motor can be removed. All you have to do is remove the glove box. There is a rubber "rope" attatched to the left side of the box that has to be removed, then flex the right side of the glove box inward to allow the rubber stop to pass the framework. Lower the box past it's normal open position and pull toward you. (It's a good idea to take all the **** you keep in it out of the box) Behind the glove box, in the lower right portion of the dash you'll see the round outline of the blower motor. You are actually looking at a rubber cover over the motor itself. At the top of the motor you'll see the two electrical leads to the motor. One is positive and one is ground. They just pull off. Mine were black and purple. Black is ground. Purple is power. Now that the leads are disconnected, it might be a good time to check them for power, just to make sure your blower motor is defective. If the motor has to go, then begin pulling the rubber cover off the motor. Just reach behind it and starting working it off. There is a flap along the top that has a notch in it that fits over a peg, sort of like a belt. Just keep working and twisting and it can be removed with a little effort. (yES, THATS FOR 99 AND UP, for 98 and earlier, see below)
Once the cover is removed you'll see 5 or 6 tiny screws that hold the motor in. You'll probably need a socket extension with some sort of flex or u-joint attatchment to get to some of these. With the screws out, remove the motor. You might have to rotate the motor housing to get it past some of the dashboard bracing, but it's pretty straight forward. This is how I did it on my 1999 GMC Suburban, 1/2 ton, 350, 2wd. Other models may be different.

Thank You

Posted on May 28, 2009

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