Question about 1998 GMC Sierra
Fan only works on HIGH. For example with the air conditioner turned on I am either freezing or hot. No low speed working, just HIGH of off.
Your blower moter is under your glovebox and very easy to replace.I dont think thats your ploblem.I would pull off the dash.It will snap right off without breaking anything.Then pull out the part that holds the selector switch for the fan speed.Then you unplug that switch.Clean the copper contacts.Plug it back in.If everything works again like it should and did in my truck then it is either that switch that is bad or the wiring harness.I would replace that switch.
Posted on Apr 01, 2009
The most common solution is to replace the blower speed resistor. The blower speed switch is probably not to blame here because you state that the blower either works on high or is off. Is the blower blowing high on all speed settings, or is it off until you reach the highest setting? In either case, the blower speed resistor is less expensive than the diagnostics, and once you install it the diagnostics are done! If it doesn't work after you replace the blower speed resistor, the the blower speed switch or the wiring is at fault. In my experience this complaint is solved by the blower speed resistor 9 out of ten times.
Posted on Nov 01, 2008
Have the blower motor resistor checked, a faulty one would usually cause that problem
Posted on Nov 01, 2008
Blower motor has ice in it and started to burn up . I need to know how to pull it out?
Posted on Dec 13, 2008
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Posted on Jan 02, 2017
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