Question about 2003 GMC Envoy

2 Answers

2003 GMC Envoy main blower fan runs constantly

Posted by on

2 Answers

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that got 5 achievements.

    Novelist:

    An expert who has written 50 answers of more than 400 characters.

    Governor:

    An expert whose answer got voted for 20 times.

  • Expert
  • 95 Answers

Does the fan stay on even with the ignition key off? Do you have automatic heating and air conditioning controls? Automatic controls have a light up blue screen in the middle of the temperature controls, and there will be a button that says "Auto". If you do have automatic controls, the likely culprit of your fan staying on constantly is what is called the blower control processor. The blower control processor is a small computer that replaces the blower resistor commonly found in cars. When the blower control processor fails, it usually "sticks" on. It's not a cheap part, but is easy enough to replace if you're handy with basic hand tools and comfortable unplugging electrical connectors under the glove compartment area.

Posted on Oct 19, 2013

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • GMC Master
  • 3,187 Answers

Temp switch is stuck. is fitted to the radiator.

Posted on Oct 15, 2013

6 Suggested Answers

6ya6ya
  • 2 Answers

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

Hi,
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.
goodluck!

Posted on Jan 02, 2017

  • 1114 Answers

SOURCE: blower dosent blow on high

fan blower speed switch under hood usually in fire wall or in heater box under dash area if you do not change it you will keep losing all your speeds until nothing left! it is not!!!!the one in your dash that you hand operate! hope this helps.John

Posted on Jan 24, 2009

  • 1 Answer

SOURCE: 2005 GMC Envoy SLE blower fan speed #5 is not working

More than likely this should just be your resistor. You have different sized coils on the back of your resistor for all the different fan speeds. if one of them burns out or breaks then that certain speed will not work.

Posted on Feb 03, 2009

  • 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

  • 6 Answers

SOURCE: engine cooling fan runs all of the time

the fan relay is bad

Posted on Mar 06, 2009

  • 599 Answers

SOURCE: All at once? 2003 GMC Envoy XL

have the car scanned for trouble codes and get back to me with the codes. most major parts stores will do this for little or no charge,get back to me with the codes

Posted on May 15, 2009

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Rear blower fan making a knocking noise when running


This may be a defective blower motor shaft bearing , have a technician listen to it to confirm the problem is the bearing in the motor.

Sep 05, 2012 | 2003 GMC Envoy

1 Answer

How to replace rear fan resistor envoy 2003


Doesn't have a resistor. It has a blower motor control processor. When they go bad, the blower motor defaults to always on (go figure that logic). Pull the AUX blower motor fuse until you can get a replacement. The processor is located back by the rear blower motor.
Blower motor wont shut off Ricks Free Auto Repair Advice

Aug 10, 2017 | 2003 GMC Envoy

1 Answer

Location of the REAR FAN blower motor resistor in my Envoy 2003


right rear blower fan making knocking noise when running then stops

Jul 13, 2012 | 2003 GMC Envoy

1 Answer

2003 GMC Envoy Service Engine light on. OBD2 Code is P0128


Ah the famous P0128.....It's 1 of 2 things. If your fan is not engaged constantly (would sound like an airplane or big rig everytime you step on the gas) and is working properly, that rules out the fan clutch. The other common problem is the thermostat. Replace the thermostat and the code will go away. Engine temperature needs to be at 210 degrees on these engines. If the fan clutch is constantly engaged, it's cooling the engine off constantly and won't get up to 210 fast enough. If it's the thermostat, it's stuck open and isn't allowing the coolant to properly heat up in time.

Feb 08, 2011 | 2003 GMC Envoy

2 Answers

Blower motor stopped on my 2006 Envoy


check the fuses if thay are good replace with new blower motor

Mar 10, 2010 | 2003 GMC Envoy

2 Answers

2003 GMC envoy heater fan motor will only work on high setting


You need to replace the blower motor resister to get the other speeds back.

Dec 16, 2009 | 2003 GMC Envoy Xl

1 Answer

I have 2003 gmc envoy my front ac control does not


Need to check to see if the blower motor is running.If it is,but not threw the vents,most likely a vent door actuator motor.The actuator motor in this case would be bad,it is hard to get to,unless you are mechanically inclined,You can do it your self.If the blower motor is bad,just replace it.Check fuses first,and the blower relay.If I can help,let me know.

Aug 29, 2009 | 2003 GMC Envoy Xl

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

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.

Jan 20, 2009 | 2003 GMC Envoy

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

222 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts

yadayada
yadayada

Level 3 Expert

75797 Answers

Freddy

Level 3 Expert

1311 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22114 Answers

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

Answer questions

Manuals & User Guides

Loading...