Question about 2004 GMC Canyon

2 Answers

Ac switch ac fan switch only works on number 4 setting. 1-3 do not work at all

Posted by on

  • metricman Sep 13, 2008

    Exact same problem. No 1-3, but 4 works.

    Found resistor module directly behind glove box adjacent to fan. Wiggled connector and fan now works, but I know it will fail again. So, Monday it's off to the dealer for a new module that is held in by one screw.

    Thanks for the "right on" info.



2 Answers

I found that the resistor plug had melted at one of the center pins. The resistor it self was fine. I was able to bend the pins so they would make contact, then the fan worked ok.
This was a temporary repair because the connector will melt again.
I was told that the dealer has replacement connectors that can be spliced into the wiring harness to replace the melted connector. Its a common problem with these trucks and at this time there is no recall.

Posted on Sep 24, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.

    Brigadier General:

    An expert that has over 10,000 points.

  • Master
  • 5,158 Answers

Find the resisters for the fan and change that part. it's generally located on the venting for the air under your dash... look near the fan.

fairly easy fix... pull out the old one and replace it. water sometimes leaks in or just plain old condensation and rusts it out.


Posted on Sep 07, 2008

  • Roberta Smith
    Roberta Smith Jan 31, 2009

    please consider bumping this rating to a fixya... thanks



1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Ac switch fan switch not working

double posted. back up 1 post.

Dec 12, 2013 | 2006 Suzuki Forenza

1 Answer

I change a ac fan control for a new one but still with the same problem whit the speed number 4 the lower numbers donot work is the any other problem with it

I had this problem with a '01 Focus. Replaced the switch (also set up 1-4 speeds) and it fixed it. You may have a blower motor going bad. Hope this helped!

Oct 26, 2012 | 2000 Dodge Stratus

1 Answer

Hi Everyone. Quick question.. I have 1999 Plymouth Voyager. And for some reason my control switch to the ac won't work on low. It has 4 speeds. It works only on full blast. Im new to this. I just want...

I think you are referring the fan control switch. Normally the fan has to work before the AC will turn on.

So if the ac is working only on higher spped settings, you need to confirm if the fan is actually working at the low settings.

Jul 27, 2011 | 1999 Plymouth Voyager

1 Answer

I have a 2002 mitsubishi lancer es, my ac doesnt work on 1 2 or 3 but it does on 4.

Do you mean that the fan does not work on 1,2,3? If so, there's a resistor network (in the switch assembly I think in the 2002) that has failed.

You'll need to remove the fan switch assembly to inspect this. If its broken, locate a replacement at a wrecker.

If the fan does work on all settings, then there's an issue with the AC system, probably low refrigerant level. You may be able to get the system repressurized if the leak is not too severe.


Jun 09, 2011 | 2002 Mitsubishi Lancer

1 Answer

AC only works with fan on setting 1, but not on 2-4.

if what you are saying is the fan quits in other positions, then most likley the fan switch is bad,,common problem
From Wendell

Aug 04, 2009 | Mazda 626 Cars & Trucks

1 Answer

The AC blows on #4 fan setting but doesn't blow at all on 1-3

That is the blower resistor. 4 is wide open, so, no resistance. I had 4 of them put into my truck. The wires were burnt and shorted the others until the problem was found. Check the plug if you do this yourself.

Jun 13, 2009 | 2005 Chevrolet Colorado

1 Answer

Blower fan only works on high

If it is working at all then the relay and fuse is good and the problem is either the little vacuum hose on the back of the control switch panel or the panel itself.

Feb 01, 2009 | 2001 Chevrolet Silverado

2 Answers

Fan speed switch only works on #5

Call your local GMC Dealer and see if they have the climate control panel in stock. What happens is the circuit board on the back of the panel shorts out. The panel comes as an assembly and is very easy to replace. Don't go with a wrecking yard piece. I made that mistake once and it didn't work either. I got one from the Chevy dealer and it worked perfectly.

Aug 21, 2008 | 2002 GMC Sierra

Not finding what you are looking for?
2004 GMC Canyon Logo

Related Topics:

148 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

77499 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22306 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

Are you a GMC Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides