Question about 1994 GMC Sierra

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I changed my plug wires and reconnected the ground cable and now my blower fan doesnt work

Everything worked fine before i changed the plug wires, could i have accidently bumped something under the hood to cause this while switching out the plug wires

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  • GMC Master
  • 450 Answers

YES , common sense is a good thing, don't you agree ? take your time , you'll figure it out !!!!

Posted on Jan 15, 2013

  • franklchovan
    franklchovan Jan 16, 2013

    i figured it out, i tapped lightly on the blower fan/motor and the fan kicked back on. I assume the resistor is going out but not sure.

  • ken hane Jan 16, 2013

    THE RESISTOR is usually the first thing to go

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Posted on Jan 02, 2017

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SOURCE: 94 gms safari van heater blower not working

This van has a resistor under hood for the blower motor and is the blower motor getting power to it

Posted on Jan 17, 2009

jgwhomeequip
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SOURCE: 1994 jmc jimmy 4.3 vortex spider fule inj.

What size and type of plugs are you running in your vehicle. If you are running spit fires they make everything hotter and are known to cause this problem especially if not gapped correctly

Posted on May 16, 2009

  • 2309 Answers

SOURCE: blower not working on 1998 gmc jimmy. use to

start withe the harness you were wiggling, either you had a bad connection at one of the harness plugs or an internal short within the wires, do a voltage or continuety check on the live wires, an make sure you have a good ground

Posted on Dec 08, 2009

  • 507 Answers

SOURCE: can some post the 1999 gmc sierra wiring diagram

you don't have enough pressure in your system. odds are you have a leak someplace and the factory installed a saftey switch to keep the ac from running when there is no pressure. This way you don't end up burning up your compressor.

Posted on Jan 13, 2010

vetteman3002
  • 2299 Answers

SOURCE: 2003 GMC Yukon XL - same as Suburban ("Rear Blower

You don't have any voltage to the blower motor? Are you getting power to the switch?

Posted on Oct 19, 2010

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blower motor-4bz2mkcvnm5ayntwwbkgqafe-4-0.jpg

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