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Author Topic: Blower motor only 1 speed (low)  (Read 4620 times)

Offline Goobzilla

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Blower motor only 1 speed (low)
« on: August 17, 2010, 08:39:42 pm »
Noticed my blower motor is only running at low speed regardless of switch setting.  I did a little searching around and read that if it only runs on high it's usually the resistor.  Anyone come across this before?  It was an A/C truck originally, bad blower motor relay perhaps?  Thanks for any help you can provide!

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Offline VileZambonie

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Re: Blower motor only 1 speed (low)
« Reply #1 on: August 17, 2010, 08:42:43 pm »
What year?
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Goobzilla

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Re: Blower motor only 1 speed (low)
« Reply #2 on: August 17, 2010, 08:45:14 pm »
Quote from: VileZambonie on August 17, 2010, 08:42:43 pm
What year?

My bad  :P 78 GMC K15 originally 400 SB w/AC
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Offline VileZambonie

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Re: Blower motor only 1 speed (low)
« Reply #3 on: August 17, 2010, 08:49:11 pm »
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,                           ___ 
                         /  _ _ _\_
              ⌠ŻŻŻŻŻ'   [☼===☼]
              `()_);-;()_)--o--)_)

74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Goobzilla

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Re: Blower motor only 1 speed (low)
« Reply #4 on: August 17, 2010, 10:46:31 pm »
I'll check it out tomorrow, thanks!
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