Question about 1996 GMC Sierra

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Blower stopped working on the heat in my 1996 GMC Sierra. was working just fine and then just stopped.

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Check under your hood and there should be fuses one should say blower fan or something of that sort. I use a chimeing voltometer to check my fuses. If there is a chime then it is good you can also use the old fashion light up fuse checker. Hoe this hellps

Posted on Jan 04, 2014

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Posted on Jan 02, 2017

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SOURCE: 2003 GMC Sierra heater Blower wont shut off

My 2003 Sierra's blower came on by itself in the garage while I was sleeping and ran the battery completely down. I had to replace the blower switch located under the glove box next to the blower at the bottom of the right corner of the dash. The switch is in front of the blower and held in by two screws. Disconnect the two wire connections. This is a "dealer only" part and cost me 65.00. Also check the wire harness with seven wires connected to it for melted plastic. It will be marked "ABCDEFG". If it has melted, you'll need to replace it. Pay attention when reinstalling either part, that the wires "ABCDEFG" match the switch in that order.

Posted on Jan 17, 2009

ministock48
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SOURCE: 1996 GMC blower motor only works on high speed.

more than likely yes the resistor

Posted on Oct 22, 2009

  • 172 Answers

SOURCE: 2005 GMC Sierra 1500 - heater blows, but only cold air

Check coolant level. Check for heat at the heater hose going from water pump to heater core at firewall. Check to see that cable is moving coolant control valve from the closed to open position. Low mileage so it shouldn't be plugged heater core.

Posted on Jan 07, 2010

Testimonial: "You were absolutely correct. Low coolant level. Put in some 50/50 and we're nice and toasty now, but need to find out why coolant was so low. Thanks."

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SOURCE: How to remove and replace the blower motor on a

If you look under pasenger side dash at floor board you will see blower housing. unbolt it and you may have to remove one dash bolt at bottom pry dash out a little and remove motor

Posted on Oct 19, 2010

Testimonial: "Thank you for your help."

  • 33 Answers

SOURCE: How to locate and remove the blower motor resistor

It is located on top of the heater box in the passenger side remove the glove box to gain acess there are two 7mm srews and a relay braket holding it in place it is a tight squeeze but can be removed with a 1/4 inch ratchet.
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Hope this helps

Posted on Jan 13, 2011

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Related Questions:

1 Answer

Did I blow a fuse?


With blower switch on . and ignition key on try to hit blower motor if it work then motor is defect if not then you need to know if current goes to blower motor
hope it help

Jan 03, 2014 | 1996 GMC Sierra

2 Answers

In my 1996 GMC sierra 2500, the heat cuts out.. i will put it on high it works for a second then turns off. i have also noticed that when it does cut out the lights on the PRND321 goes out as well. i...


The heat cut's out ? The heater blower motor stops working ? Testing the electrical circuit would be the proper way to diagnose . Looking at a wiring diagram an using a DMM - digital multi-meter , an doing amp draw test on the blower motor . The PRND321 an blower motor probably share a ground or power point . Looking at a wiring diagram for both circuit's would show that . Not a short , more likely a loose ground connection . Free wiring diagram's here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model and engine size . Under system click on HVAC then under subsystem click on HVAC controls . Then click the search button ,then the blue link . First blue link is blower motor control circuit . Voltage drop test the blower motor ground .Videos on youtube showing how to diagnose !
Blower Motor Resistor Replacement Wire Splice Splicing Amperage Draw Test
Blower Motor Resistor Function and Diagnostics
Mastering Voltage Drop Testing with Pete Meier and Jerry Truglia


Oct 30, 2017 | 1996 GMC Sierra

1 Answer

I have a 2006 GMC Sierra. The heat/defrost blower fan stays on when the ignition is turned off. The only way to stop it is to pull the fuse.


Sounds like the blower switch is shorted. Try running through the blower speeds to see if that changes anything.

Jan 02, 2011 | 2006 GMC Sierra

1 Answer

How to remove and replace the blower motor on a 1996 GMC Sierra Pickup.


If you look under pasenger side dash at floor board you will see blower housing. unbolt it and you may have to remove one dash bolt at bottom pry dash out a little and remove motor

Oct 19, 2010 | 1996 GMC Sierra

2 Answers

My 1995 Sierra blower quit.


probably the blower motor.

Jul 18, 2010 | 1995 GMC Sierra C1500

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

1 Answer

I have a 97 SIERRA. HEAT WORKS FINE ON DRIVERS


If you have climate controls that are "slide type" knobs...likely that the cable that controls the diverter panel in the blower box is broken....

Feb 27, 2009 | 2000 GMC Jimmy

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