Question about 2004 GMC Canyon

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04 gmc canyon replace blower motor wire harness it was fried and the resistor was fried and nothing works now after every thing was installed any solutions to what I do next ??? Please help I'm in Arizona 115 today . The reason I replaced them is because it the fan only blew on high #4 then it just stoped so I was told to replace wires And the resistor still nothing thanks Matt

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  • GMC Master
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Do you know how to test electrical circuits ? Look at a wiring diagram an check power and grounds . Do you have a volt meter ? You can buy them cheap enough at a parts store . Here is a web site for free wiring diagrams http://www.bbbind.com/free_tsb.html
Enter your vehicle info. - Year , make , model and engine . Under system click on HVAC then under subsystem HVAC controls . Click the search button then the blue links one at a time . Looking at the first diagram do you see the IGN3 HVAC relay #59 located in the under hood fuse / relay box ? That's where the B+ power start's ,then blower fuse # 41 30 amp. check For B+ power on the brown wire at the blower motor you should see B+ voltage on the Orange wire as well with the blower switch in the off position .Do you see how the syatem works ,get's ground through the switch .Videos on youtube on basic automotive electrical testing . check them out ,how to use a volt meter . Learn to test an not guess

Posted on Aug 26, 2017

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  • 34 Answers

SOURCE: 7 wire harness going to blower motor resistor

There is an updated resistor/connector package. Very expensive from GM, try your local NAPA or other parts supplier for a replacement

Posted on Jul 09, 2009

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1 Answer

2004 canyon no voltage at heater resistor


The resistor provides the ground circuit for the blower motor. So you would need to have power at the blower motor first. Grounding the motor or resistor should make the motor run.
The blower motor gets power from a 30amp fuse which gets power from a relay.

Jan 18, 2014 | 2005 GMC Canyon

1 Answer

Blower motor


I'm showing a blower relay and a resistor used on models with manual ac control.
The blower motor is grounded and the fan switch provides power thru the resistor. So you have a 40amp blower fuse that handles high thru the relay, then a 30amp HVAC fuse that powers the blower thru the fan switch.
Do you not have power from the resistor to the blower motor on the purple wire ?

Jun 26, 2013 | 2003 GMC Envoy

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Air condition kicks on only on high 2006 gmc 3.5


If you are referring to the blower speed then you have a blower motor resistor out. I assume that's what it is since these trucks have a big issue with it. Wen replacing the resistor I would recommend replacing the wiring harness for it as we'll since they usually melt the terminals when they go out.

Mar 17, 2013 | 2006 GMC Canyon

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1996 GMC Sierra Heater blower motor only works on high speed. How do you change resistor?


The blower motor resistor is located within a foot of the blower motor in the duct that the blower motor blows into. The resistor is actually cooled off by the blower motor blowing across it. It has a wire harness that connects it to motor & fan switch. It is held in place by 2-4 retaining screws. Disconnect wire harness,unscrew retaining screws then lift out. Reverse order to install.

Jan 24, 2011 | 1997 GMC Sierra

1 Answer

Ineed to replace a blower moter resister. only works on high setting


The blower resistor pack needs to be replaced, it's common for the blower speed resistors to burn up and will need to be replaced. It's easier to replace with the glove box out of the way. gmparts direct has the harness and resistor as a package deal. Their part number is PK15218254.

GM Parts list:

Resistor - p/n 15218254 $8.59*

Connector - p/n 15306069 $30.70*

Wiring harness - p/n 89019124 $20 *

You don't need to remove the glove box, just lay on the floorboard and look up under the dash. There's a 4-wire harness plugged into the resistor assembly (white plastic), in the bottom of the black heater blower shroud. Unplug the harness, remove two small screws, and pull down to remove the resistor assembly.

Good luck and merry xmass.

Dec 15, 2009 | 2006 GMC Canyon

1 Answer

Blower motor for interior fan only blows on high speed. All the lower settings dont work now


The blower resistor pack needs to be replaced, it's common for the blower speed resistors to burn up and will need to be replaced. It's easier to replace with the glove box out of the way. gmparts direct has the harness and resistor as a package deal. Their part number is PK15218254.

GM Parts list:

Resistor - p/n 15218254 $8.59*

Connector - p/n 15306069 $30.70*

Wiring harness - p/n 89019124 $20 *

You don't need to remove the glove box, just lay on the floorboard and look up under the dash. There's a 4-wire harness plugged into the resistor assembly (white plastic), in the bottom of the black heater blower shroud. Unplug the harness, remove two small screws, and pull down to remove the resistor assembly.

Good luck and merry xmass.

Dec 15, 2009 | 2006 GMC Canyon

3 Answers

Fan control only works on high in a gmc 2005 canyon


Replace the blower motor resister,it is mounted right next to the blower motor,it has a lug with about 7 wires on it.Just unplug it and remove two screws to remove the resister.This controls the speeds for the blower motor.The blower motor is the cause of the resister failure.Even if the motor seems to sound,and run fine,it is pulling to many amps.

Dec 08, 2009 | 2005 GMC Canyon

1 Answer

7 wire harness going to blower motor resistor


There is an updated resistor/connector package. Very expensive from GM, try your local NAPA or other parts supplier for a replacement

Jul 09, 2009 | 1996 GMC Sierra

2 Answers

Fan blower motor


The Canyon has an inherint problem with the Fan Power cable being loose. When I say loose...I'm saying that you need to adjust the wires and then take a zip strip to tighten it up.

Passenger side under the dask are 2 cable hook ups. the one on the farthest right (Only 2 wires going to the plug) is the fan power cable. Jiggle it while the fan is on position number3 so you can hear when it comes on!!!

Nov 18, 2008 | 2004 GMC Canyon

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