Question about GMC Sierra 1500

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Blower motor resistor replacement

How to replace blower motor resistor? 1995 GMC Z71

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  • Anonymous Mar 15, 2014

    I need toreplace hvac blower motor regulator module how is his done.te repair manual is sketchy at best.

  • Anonymous Mar 29, 2014

    where are fuses for blower motor

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The relays are behind the glove box. you have to take the glove box out to have access to the relay for the heating system 

Posted on Dec 10, 2008

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Caint find where to install my ac motor resistor ino is some where around the glove box but where?

Posted on Sep 11, 2009

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You have to remove the glove box. Once removed shine a light in to the upper area and look for the wires. It is sandwitched between the bottom of the dash and the upper part of your HVAC duct work. Not easy to get the screws out. Unscrew up twords the dash. I also had to take screws out of the dash and use a hammer handle to get enough clearance to remove the old one and still destoyed it. Well good luck.

Posted on Dec 25, 2009

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1 Answer

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

Jun 04, 2013 | Cars & Trucks

1 Answer

1995 GMC Sierra fan blower not working.


In the beginning you should check for voltage and ground.
The 50amp fuse marked AC powers the blower motor and the motor is grounded.
The high speed relay bypasses the resistor. So you should have power coming from the fuse and thru the high relay. Then the resistor for the other speeds gets power from the heat and ac control module which also controls the blend doors.
You may need a shop manual or repair book to get the diagrams.

Jan 12, 2013 | 1995 GMC Sierra C1500

1 Answer

Where is the blower motor resistors located on a 1996 gmc z71 pickup?


Blower motor resistor block is attached with two screws opposite side of the blower motor

Jan 17, 2011 | 1996 GMC Suburban

1 Answer

Blower Motor cuts out while operating on my 2001 GMC Sierra 4wd extended cab P/U. Banged on the spot on the passenger side under the dash and it started to work again. What could cause this?


Your truck may have a bad blower motor resistor. It can be very easy to replace, if you have a "work truck" or plain truck just look under the dash and you can see it, it has a connector with about 6 wires on it, it is right beside the blower motor. If you have a higher end truck like a LT or Z71 you will need to remove a plastic trim panel to see it, this will be difficult if you have a center console. You may also have a bad blower, to test this you will need to disconnect the two wire connector on the motor when the fan stops working and check for voltage on the red wire. If there is no power then the resistor is bad, if there is you have a bad blower. But you will need the problem to act up to properly test this.

May 23, 2010 | 2002 GMC Sierra 1500

1 Answer

1998 z71 4x4 truck k1500 v8 the airconditioner/ heater fan only runs on high will not run on low or medium


You need to replace the blower resistor assy. it is located down by the blower motor on the passenger side near the passengers feet. it will be held in by 3 screws. you should also check the connector for the wiring that goes to it as they have a tendency of melting. The wiring harness is available at the dealer. Purchase the resistor at the dealer and they can print off a picture of its location and or verbaly explain where it is. good luck

Jan 02, 2010 | 1998 GMC Sierra

1 Answer

98 GMC Z71: Where are the blower resistor and high blower relay? I checked behind glove box and they are not there. I have power out of the control module and no power at the blower motor.


They are there. They are hard to get to. What is the complaint? Have you checked the fuse? Blower fuse (50 amp) under the hood.HTR-AC fuse (25 amp) in the instrument panel fuse box

Nov 03, 2009 | 1998 GMC Sierra

2 Answers

Blower motor works only on high on 1995 mercedes e320


hello,good day,first try to check your blower switch,if not corrected,your blower resistor is located at the bottom of your brake booster,ty

Jul 12, 2009 | 1994 Mercedes-Benz C-Class

1 Answer

7 wire harness going to blower motor resistor


There is an updated resistor/connector package. Very expensive from GM, try your local NAPA or other parts supplier for a replacement

Jul 09, 2009 | 1996 GMC Sierra

2 Answers

Where is the heater resistor switch for a 1995 gmc sierra


Its located behind glove box on top of heater just to the left of blower motor. If you take off the glove box door ( glove box and door one unit) you will see it on top of heater box.

Jun 20, 2009 | GMC Sierra 1500 Cars & Trucks

1 Answer

Where is blower resistor located on a 95 GMC, how to install?


yes you have to take out the dash and the glove box to get it out. its on the passenger site in a black plastic housing.

Dec 16, 2008 | 1995 GMC Sierra C1500

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