Question about 2003 GMC Savana

Open Question

I have a GMC savana 2003 cargo van. The fan no

I have a GMC savana 2003 cargo van. The fan no longer goes on. Fuses are OK and blower motor resisitor is not the problem. The fan works when direct voltage is applied. what could it be?

Posted by on

  • 7 more comments 
  • snclvc Mar 12, 2009

    No voltage at fan when dial is set for any speed. The pneumatic switch I have set to different settings- no power at fan.

  • snclvc Mar 12, 2009

    There is power on the red and black to the blower resistor. I don't know what colors are in and out on the fan dial. I don't have a wiring schematic- is there one available on line?

  • snclvc Mar 12, 2009

    no voltage at fan. Could the pneumatic pump be messed up- I don't hear the air exchange sound when I turn the a/c switch?

  • snclvc Mar 13, 2009

    Ignition is turned to on. Is it the a/c fuse? If so it is ok- I don't see a blower motor fuse. as to power in and out, I don't know which colors to check- no diagram you see. What about pnuematics- could that be where the problem is?

    I could not find any free diagrams available.

    I tried a new blower resistor and it did not fix the problem. Fan switch has 8 pneumatics and at least six different colored wires coming out. I really don't know which ones to check or bypass.

  • snclvc Mar 14, 2009

    blower fuse was fine and i switched fan relay with another- no go

    I'll just replace the control swotches and see if that works.

  • carhob May 11, 2010

    usually fan will work even if your diverter doors do not,and u have power at the resistor circuit,so to me the problem is at fan relay circuit that start blower fan,its 30amp fuse located underhood fuse center marked hvac,fan relay is in there too,check it,i dont have exact diagram,wire colors are diffrent but base wiring should be very close.if not same!and if relay tests ok check for open ground wire.

  • carhob May 11, 2010

    are u checking voltage with ign. to on,if u look on this site, theres on line repair manuals, like alldata.did u check fuse and relay underhood and int.fuse box 20 amp fuse.

  • carhob May 11, 2010

    is there power at blower resistor cicuit,in and out,if theres not check at fan dial ,in and out,

  • carhob May 11, 2010

    when you put dial on for fan is there voltage at blower fan?



6 Suggested Answers

  • 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 expert 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 repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017

  • 78267 Answers

SOURCE: cant find the location of this oil pressure switch on my 1999 gmc savana 1500 van with a 350 engine

very rear of engine center of block behind intake.

Posted on May 12, 2009

  • 350 Answers

SOURCE: windsheild wipers on a 2003 GMC Savana van

hi the contacts in the switch would appear to be faulty if you can get to the switch try spraying the switch with wd40 or simular as if you can spray the contacts it may clean them if you want abit more positive diagnostic while wipers are working disconnect the wires from the switch when they won,t turn off if they continue to work check out the relay yates210456

Posted on Oct 09, 2008

  • 116 Answers

SOURCE: Need to remove the fan to replace the water pump

you need to get a fan clutch wrench to remove the fan you can get one at any local autozone or murphys parts stores

Posted on Dec 10, 2008

  • 507 Answers

SOURCE: My a/c blower will not turn on GMC Savana 2003

could be the fan switch or even a bad ground for the blower motor.

Posted on Mar 12, 2009

  • 443 Answers

SOURCE: where is air conditioner recharge port

remember you will always charge an air conditioner on the low side. which is always on the larger hose. there is a smaller one which is the high side so stay away from the small one.. look up near the radiator and see if you see the dryer which is about 3 inches across and 8 inches long and looks like a cylinder.. on this device there is a port where you can charge it .. also this year might be up near the firewall .. they change locations too often .. thanks and holler if you need more. Jerry

Posted on Apr 25, 2009

Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer


Chevrolet Express Questions - 2011 Brake and turn fuse ... > Questions > Chevrolet > Express

CarGurusJan 23, 2011 - 2011 Brake and turn fuse - Were is the fuse for brake and turn on ...location). and two sets of fuses for the brake and turn signal lamps, one in eachlocation. ... i mean for 2006 express extended van .... in fuel pump plug and its hot always even if you pull fuse and relay. ... Used Chevrolet Express Cargo".

Ford E-Series Cargo Questions - Where is the turn signal ... > Questions > Ford > E-Series Cargo

CarGurusWhere is the turn signal relay on a 2010 e350 located - I need to replace the turn signal relay, where is it located? ... Asked by dogfoodman Sep 24, 2013 at 08:38 AM about the 2007 Ford E-Series Cargo E-350 Super Duty ... Used GMC Savana Cargo". 43 Great ... Copyright © 2006-2015 CarGurus ®, Inc., All Rights Reserved.


Dec 18, 2015 | 2006 GMC Savana Cargo

2 Answers

My blower fan only works sometimes

Two things could be going out a bad blower ac motor under the glove box or a bad ac blower resister there easy rto install youtoo vedios will help you how to install it good luck get back if u need help

Oct 03, 2015 | 2005 GMC Savana Cargo

1 Answer

2012 gmc savana blower motor works some of the time and some time it doesn't

when it does not work wack the motor or check the voltage at the motor i think under glove box or under hood

Feb 15, 2015 | 2012 GMC Savana Cargo 1500 Cargo Van 4.3L...

1 Answer

The fan in my 2002 GMC Savana cargo van doesn't work. I lost low, then medium speed, and finally the high speed.I checked the fuses and relays.I changed the blower resister, still no fan. The heat

Hi Jim, If the vehicle is fitted with climate control it will have electronic management. However it can be wired by someone knowing electrical circuitry to by pass the control. It will save you some cash but will need manual control. Make sure whoever does the job knows what he or she is doing. Have a happy new year. Regards John

Dec 31, 2012 | 2002 GMC Savana

1 Answer

I have a 2002 GMC Savana Cargo van with a a/c and heater blower that will not work. The problem started when I lost the low speed, then the medium, and finally the highspeed. Fuses and relays are ok.

You checked the fuse and relay, did you check to see if you had power at the resistor ?
American built vehicles control fan speed by the power circuit which goes thru the resistor. The high speed usually bypasses the resistor.
You may need a new blower motor or control switch.

Jul 20, 2012 | 2000 GMC Savana

1 Answer

My 2003 gmc safari cargo van has been trying to overheat when I turn ac on what could it be?

If your gmc safari cargo van overheats when the ac is on, your radiator and cooling system may be clogged and not working at peak efficiency.

Make sure your radiator cooling fan goes on as soon as you turn the a/c on.

Jul 05, 2010 | 2003 GMC Envoy

2 Answers

2003 gmc van the blower switch not working

Yes, definitly the blower motor resistor. Usually located just under the dash on the passenger side. Usually a result of mostiure entering the compartment where the resistor is located. Very common issue actually.

Aug 29, 2009 | 2003 GMC Savana

1 Answer

My a/c blower will not turn on GMC Savana 2003

could be the fan switch or even a bad ground for the blower motor.

Mar 12, 2009 | 2004 GMC Envoy

Not finding what you are looking for?
2003 GMC Savana Logo

Related Topics:

453 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

78267 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 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