fan won't work on high

[98k1500]

Did you check your fuse for the blower under the hood? I took mine out to use it for my subs and the speed worked on everything but high. I'd look there


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[benualson]

So, I replaced the Fuse & the Speed Switch. Still no high fan. Think it could be the blower (we replaced the blower about 6 months ago with a Factory Air brand blower motor)?

 

[DRAGGIN95]

Have you checked the relay that was mentioned on page 1?

 

[benualson]

Yes. So far, I have replaced the resistor, high speed fan relay behind the glove box, blower fuse under the hood, speed switch, & I tried a new blower motor. Cursed I am.

 

[1997chevydriver]

Yes. So far, I have replaced the resistor, high speed fan relay behind the glove box, blower fuse under the hood, speed switch, & I tried a new blower motor. Cursed I am.

Does the relay click when ya turn it on high? If not check wires from switch to relay if so check wires from relay to blower and power to relay

 

[DRAGGIN95]

I have replaced numerous factory fan wiring harnesses from being melted down above and to the left of the blower motor.

 

[96twodoor]

On my old 98 the plug on the back on of the a/c controls (far left when you facing it ) melted so it was shorting out. Never figured out why it did but went to the junkyard and clipped on off another truck , wired it in and fixed it for free. Just something to check .

 

[bluex]

On my old 98 the plug on the back on of the a/c controls (far left when you facing it ) melted so it was shorting out. Never figured out why it did but went to the junkyard and clipped on off another truck , wired it in and fixed it for free. Just something to check .

Mine did this exact same thing....

 

[benualson]

So, what part melted? The female end of the wiring?

 

[96twodoor]

the male end that plugs into the A/C controls