Blower motor ain't working

[Tracto-man]

Hey y'all, had my 1998 Chevy k1500 4x4 5.7 extended cab for a while now, the blower motors never worked right. Once in a great while it will kick on for a few seconds then back off for the next few days.

 

Guy I got it from said it needs the whole Motor, but with it turning on for a bit every once in a while I'm wondering if there's a solinoid or something that's goes bad? I would really hate to spend $50+ on a blower motor only to find it was something else.  Fuse is good.

 

Never minded it in the winter but with summer just around the corner I need my A/C, lol.  Thanks guys

[silveradosid]

use a test light on the connection on the blower motor and change the setting with the speed control if the light goes from dim to bright on high then replace the motor. it is not uncommon for motors to get a dead spot in the windings 

[2018GMC]

If it works fine on HI only then the resistor needs replaced. You will see it inside heater duct when removing blower motor. 

 

If NONE of the speeds work then you need the fan, temp, duct setting (3 knob) control panel. These are known to go bad. You MAY find a good used one at junk yard but check rock auto for price of new. 

 

My 97 still has its original blower motor and control panel. Have had to replace resister since it only worked on high. 

[tanman34]

Ive had these problems on my 98 there is a short in the wires by the blower motor when mine stops working I just wiggle the wire harness that runs from there to the drivers side, right under the glovebox.  My 3rd speed quit working yesterday and I haven't took the time yet to see if mine is acting up again.