Question about 2002 GMC Envoy

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2002 GMc Envoy Blower motor isnt working

Already changed the blower motor and the blower motor resistor and it still isnt working any ideas.

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  • sbrowny7 Jan 08, 2009

    No power is going to the blower motor.

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Do you have power to it..or a bad ground around blower motor? is the head unit not signaling the blower to run?...calling it with A/C or heat or just fresh air ..try all settings and advise...good luck

Posted on Jan 08, 2009

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GMC 2004 Envoy blows heat even with blower off ... Why ?


The relay in your blower motor is stuck on, there is a TSB for this issue. Replace the blower motor resistor and you'll be back in business.
How does the resistor get power if the fuse is pulled?
Replacing the resistor will cure both problems. TSB is a technical service bullitin seen below
Subject:HVAC Blower Motor May Run Continuously After Vehicle is Turned Off (Replace Blower Resistor Relay)Models:2004 Chevrolet Avalanche, Silverado, Suburban, Tahoe, TrailBlazer, TrailBlazer EXT2004 GMC Envoy, Envoy XL, Sierra, Yukon, Yukon XLwith Manual Control HVAC (RPO CJ3)Built Prior to August, 2003

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FRONT A/C BLOWER MOTOR NOT WORKING ON 2005 GMC ENVOY.\r\nREAR BLOWER A/C WORKING OK. DEALERSHIPS WANT $400 TO $ 600 TO REPAIR PROBLEM. HAVE SOME MECHANIC SKILLS .


First check and see if you have voltage at blower motor with key and switch on, with test light, if you do have voltage, blower motor bad, replace it, if you don't have voltage at blower motor, next to it, is where the blower motor resistor is at, follow the wire from the blower motor to it, check voltage there, should have voltage, if you do replace blower motor resistor, resistor cost about $45.00 at auto parts.If I can be of more help. please let me know.

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1 Answer

AC blower fan no working on any speed. Somtimes works on speed 5.


The blower motor resistor needs replaced.Would also check the harnesses going to the resistor and blower motor for signs on melted wiring or poor connection.You may also need new pigtails if there is evidence of of wiring damage.

Aug 31, 2010 | 2002 GMC Envoy XL

2 Answers

Heater on 2002 gmc envoy does not turn on until you reach the setting 4 and then if you do that car dies, was told this is caused by resistance???


Blower motor resister,but shouldn't kill the car.It is mounted under the dash on the passinger side next to the blower motor.All is incased in a plastic cover.You should only have to remove the front screws to get to it.Well good luck and hope this helps.

May 16, 2010 | 2002 GMC Envoy

1 Answer

Blower motor will not work and when it does it will not shut off. Could it be the relay switch


It is your blower motor resistor.It is located on the passengers side under the dash.The resistor is next to the blower motor.There will be a 2 wire connector going to blower motor to the resistor.This is a common problem on G.M.Vehicles.

Nov 18, 2009 | 2002 GMC Envoy

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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

Oct 26, 2009 | 2002 GMC Envoy

1 Answer

2002 GMC Envoy-air conditioner/heat


If only some of the fan speeds work this is always the blower motor resistor located in the hvac case inside the right front of the vehicle where your passenger feet would be.the blower motor resistor is available at most larger parts places.I replace 2 or 3 of these a week. Good luck

Aug 22, 2009 | 2002 GMC Envoy

1 Answer

Need to find blower resistor for 2003 GMC envoy


ITS UNDER THE RIGHT INSTRUMENT PANEL.YOU HAVE TO MOVE THE GLOVE BOX DOOR.TO GET TO BLOWER MOTOR AND RELAY AND THE RESISTOR.

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1 Answer

Blower motor Issue


hmmm ...ok...we need to diagnose the brain...check fuses and relays ..anything related to a/c heat blower motor and power to head unit /blower resistor blower.... and advise..also... get code check to see if a soft code stored telling us the cause..... advise

Jan 08, 2009 | 2002 GMC Envoy

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