Blower motor resistor?

Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It sounds like a bad ground.

This guide cech help us check.

https://www.2carpros.com/articles/blower-fan-motor-works-on-high-speed-only

Please run down this guide and report back.

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Monday, August 3rd, 2020 AT 11:33 AM (Merged)
Tiny
INDIANAWMN7798
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  • 6 POSTS
Yes it working! It was the ground all fixed I love this site.
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Monday, August 3rd, 2020 AT 11:33 AM (Merged)
Tiny
SHRLET
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  • 2 POSTS
  • 2002 PONTIAC GRAND PRIX
  • 6 CYL
WHERE DO I LOCATE MY BLOWER MOTOR RESISTOR
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
SATURNTECH9
  • MECHANIC
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Behind your glove box area under the dash there is a plastic cover remove it and under it you will find your resistor.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
SHRLET
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Thank you
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
SATURNTECH9
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Your welcome thats what were here for.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
MSHINN3B
  • MEMBER
  • 1 POST
  • 2001 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 126,000 MILES
My blower motor resistor keeps going out. I replace it and it runs for a few days and goes out again. The blower works after I replace the resistor but only for a few days. I have been through 4 in the last 2 months. What do I do?
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
JAMES W.
  • MECHANIC
  • 2,395 POSTS
Your blower motor is obviously drawing to much amperage. You will probably have to change blower motors to solve your problem. A restriction in the duct work can cause this problem also, but if the blower is moving enough air, it's the motor.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
FISHCJS
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  • 3 POSTS
  • 2000 PONTIAC GRAND PRIX
2000 Pontiac Grand Prix 6 cyl

Have changed resistor twice the speed contol and still will only work on high speed. Any ideas?
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
LBRUMMERMAN
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  • 3 POSTS
I have the same problem, so if you find a solution, please let me know. I have replced my resistor, checked fuses, and gone over all relays. No luck. Last resort is to check the switch, but I fail to see that as a problem on 4 of the 5 speeds. BTW, I have no ghorn either. All fuses and relays check good. Maybe related? Go figure. Thanks.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
MIKE MCVEY
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  • 1 POST
  • 2001 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 144,000 MILES
Yes, I need step by step instructions on how to change a heater fan resister for a 2001 pontiac grand prix gt two door coup. If anyone can help I'de really appreciate it
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
WATTS_AMAN
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  • 15 POSTS
Im not to sure how much different a 99 from 01, but I did just replace mine. Its located just forward of the Blower motor itself. Pop off the kick panel just under passanger dash, then locate the blower moter 3 screms hold it up, remove them to have more access. And remove the vaccum line. Now you should see the resistor, remove both plugs, 1 went to the blower motor. Now remove the screw closet to you, and loosen the the hard to reach forward ones. Slide it forward and out. May take a lil help from a flat head and maybe pliers. Remember this was done on a 99' no sure the diff of a 01'.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
CFAW10
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  • 5 POSTS
  • 2000 PONTIAC GRAND PRIX
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 138,000 MILES
2000 Pontiac Grand Prix SE 3.1L, 138000 miles---I have an intermittant electrical problem. At times the automatic headlights (not the daytime running lights) and the heater blower will stop working simultaneously and I can hear a faint clicking under the dash. I can turn the headlights on manually and they work, but the blower still won't run. When they decide to start working, they come back on together. All other electrical systems work fine. Could the blower relay/resistor be causing this problem? Any other ideas?
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
CFAW10
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  • 5 POSTS
I searched under the dash and found that when I switch on the fan control, the daytime running light module is clicking. I unplugged the module, cleaned the connections and plugged it back in. Now when the fan is switched off, the automatic headlights are working. With the fan switch in positions 1-4, neither the auto lights, or the fan works; and with the fan switch in pos. 5, both the fan and headlights work. I'm going to replace the blower relay/ resistor and see what happens.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
CFAW10
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OK. I replaced the blower resistor and relay, but still have the same problem. Auto headlights work with fan switch off, headlights and fan works with swich on high, but neither work with fan switch on 1-4.
Suggestions?
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
CFAW10
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  • 5 POSTS
After 2 days I've still not recieved a reply. I did, however, isolate the problem. It really was one of those "who'da thunk it"! (For a refund, I'll be glad to share what I found).
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
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Hi cfaw10,

I would like to apologize for not providing an answer to your question and would inform the administrators to refund you.

Thank you.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
CFAW10
  • MEMBER
  • 5 POSTS
Thanks.
After much searching with a test light and wiring diagram I finally found a common hot wire coming from the ignition switch to the fuse bank the feeds the drl module fuse and the blower fuse. The ignition switch was bad. That one contact was breaking only when a load was applied from the heater motor.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Thank you for the input. It is much appreciated.

I have informed the administrators and they would attend to your refund when they come online.

Thank you.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)
Tiny
THIS IS MIKE
  • MECHANIC
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Thank you for considering us for a donation. We are sorry that we were unable to assist you and will glady refund your donation.
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Monday, August 3rd, 2020 AT 11:34 AM (Merged)

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