Question about 2003 GMC Envoy

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Why does my high speed #5 not work on my climate control on my 2003 GMC Envoy

Posted by Anonymous on

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  • GMC Master
  • 9,587 Answers

The hi speed is controlled by the fan relay located in the under hood fuse block. It isn't working.

Posted on Jul 24, 2016

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Posted on Jan 02, 2017

leetamara
  • 702 Answers

SOURCE: 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.

Posted on Aug 21, 2008

  • 1 Answer

SOURCE: 2003 GMC Envoy lower 3 heater fan settings quit working.

had same problem on my XUV. changed the blower motor resistor, located under passenger side dash. easy to change, works no problem.

Posted on Feb 17, 2009

  • 20 Answers

SOURCE: Climate control air conditioner stops working due to incorrect ambient air temperature

Same car, same problem. Press MODE, FRONT and REAR buttons together to reset tempreture. You probably need to replace the sensor GM part number 15047946 it is in the front grill email me for a picture. chris.abbott@gmx.com

Posted on Jun 28, 2009

emissionwiz
  • 75814 Answers

SOURCE: The blower speed switch only works on 5. The

this problem is caused by a defective blower speed control resistor, it is located near the blower motor, very cheap to replace, part is around $35

Posted on Oct 26, 2009

Testimonial: "Thanks I thought it might be that. Good info!"

roniecon
  • 6826 Answers

SOURCE: My air conditioner fan speeds have all stopped

Yes,it is the blower resister,it controls all the speeds to the blower motor,it is located near the blower motor,and it might have a wire harness that is burned up too,replace it,and the wire harness,and the blower motor,the blower motor is what causes the resister to fail,it draws too many amps,even though it might sound good,and run fine,it is requiring to many amps to run it.If this was at all helpful,please rate,thank you.

Posted on Jul 24, 2010

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Related Questions:

1 Answer

Why does my high speed control for my fan not work? 1-4 works but 5 does not


Check the fan speed relay located in the under hood fuse box.

May 16, 2014 | 2003 GMC Envoy

1 Answer

HVAC Blower Motor


do you have the manual.

Oct 07, 2008 | 2003 GMC Envoy

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2003 GMC Envoy Heater Fan doesn't always blow


Your problem most likely is the resistor block. In order to limit the fan speed a reistor is placed in the circuit which will limit current flow to the motor thus giving you the diferent speeds. High speed bypasse the resistor to get full motor speed. Since you only get high speed it is very likely that the resistor block is faulty

Oct 24, 2012 | 2003 GMC Envoy

1 Answer

My climate control only works when i Have it on high


The switch needs to be replaced or cleaned, there r 4 copper connections that regulate the power going to the motor, the previous owners probly only used hi so the connections r dirty

May 13, 2012 | 2004 GMC Envoy

1 Answer

The rear climate control/radio does not work in my 2003 envoy


Check your owner's manual for a fuse box diagram and check the appropriate fuses. This may also be a high amp fuse that is in the fuse box under the hood. Please rate this answer, thanks.

Feb 05, 2011 | 2003 GMC Envoy Xl

1 Answer

I have a 2003 GMC Envoy with manual heater control. The blower only works on the highest (5) setting.


Most likely the resistor pack has failed. It still works on high because high bypasses the resistor.

Dec 30, 2010 | 2003 GMC Envoy

1 Answer

Blower motor stays running ,can't shut it off ,on my 2003 envoy 4,2,it's has dual climate controls , with blower controls on the steering wheel as well as on the dash.please help with the location of the...


you need to check / replace the blower speed resistor module that should take care of the problem it is located lower evaporator case right hand side very bottom by the blower motor.

Nov 04, 2009 | 2002 GMC Envoy

1 Answer

The fan speed for the climate control system only works on 5


it could be the blower motor resistor assembly and try www.schramauto.com or call them at 1-800-292-1032 they sell only GM parts

Mar 21, 2009 | 2003 GMC Envoy

1 Answer

Blower doesn't work at high speed


you will need to replace the fans blower resistor. its mounted in the cab. in the lower right side of the heater box. some aftermarket suppliers are carrying the part but all chevy or gmc dealers will have it.
good luck chris

Mar 15, 2009 | 2003 GMC Envoy Xl

1 Answer

Rear climate control


check and see if your rear control is working for the radio, if not: that could be your problem. All of the power for the rear of the envoy is controlled by this module.

Oct 07, 2008 | 2003 GMC Envoy Xl

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