Question about 1993 GMC Suburban

1 Answer

97 gmc suburban heater fan only works on hi

How do you find the heater fan resistors?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 379 Answers

Hello , it is located under right side of instrument panel , on heater housing . an extra clue is the wire connector going to it has a dark blue, a light blue , a tan and a yellow wire on its connector , you will only see the outside of the resistor as the actual resistors ago inside the heater case .and also this is 1997 gmc suburban , even tho listed under 1993 gmc suburban , same instructions . hope ya fix yer problem .

Posted on Jan 04, 2009


1 Suggested Answer

  • 2 Answers

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

a 6ya Mechanic 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 repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Heater not blowing

Check your blower motor resistor for a bad connection or melted pigtail.It is located on the passenger side motor in the heat duct there is usally 2 screws that hold it against the heat duct.These resistors get pretty hot and melt the pigtail causing it to lose its connection.Perform the wiggle test on it with the ignition and fan switches on.You may need to replace the pigtail or the resistor or both.

Jan 15, 2012 | 1995 GMC Suburban

1 Answer

I have a 1999 GMC Suburban and the heater switch only works on high. Originally the heater fan did not work at all and then one cold morning I tried the switch and heard a loud clanking noise from the fan...

I'm 99% sure it is the blower motor resistor - common problem. Pull the panel off the passenger
side under the glove compartment. You'll see the blower assembly on the right side with a multi
colored wiring harness going to it. Disconnect the harness and pull out the reisitor, it'll have a gasket going around it to protect it from moisture and humudity. I have replaced 3 on my 1999, but the last one, I wrapped electrical tape around the exposed resistor. Might be luck, but this one has lasted me over 2 years now. While you have the panel dropped, I highly suggest chainging the air filter located there as well. Your AC will run more efficient.

Jan 24, 2011 | 1999 GMC Suburban

3 Answers

Heater fan only works on the high position?

There is a plug up under the glove box that loosens and you need to snug it up.

Dec 09, 2009 | 2004 GMC Canyon

1 Answer

My chevy ac blows only on fan speed 5 what could it be

It is a 99% chance you need a new fan speed resistor board.
It is beside the fan motor.... it sits in the heater/AC duct work to use the air flow to cool itself.
It costs about $35 and takes 15 mins to change.
Did you loose one speed then another and now only high works?
That's the usual way they fail.

Sep 18, 2009 | 1995 GMC Suburban

2 Answers

1983 Chevrolet Suburban Heater fan not working

Heater blower motor resister is bad, replace, located under dash above heater motor.

Mar 15, 2009 | 1983 Chevrolet Suburban

1 Answer

Blower Fan will not blow on 1995 Chevy Suburban

It sounds like your blower motor may be bad. I don't know if you know how to check power at your blower motor plug, but you can use a volt/ohm meter or a test light. If you have power (12VDC) , your motor is most likely bad. There is also a resistor block module which has 2 resistors on it. It controls the motor speed basically by restricting the power by directing it thru one of the resistors. The higher the resistance, the slower the motor turns, thus the 3 speeds for the motor. The resistor module is mounted on the blower housing and has 2 screws holding it in with a small plug connected. It is just about straight ahead of the passengers left knee.
You can get used motors from a junk yard pretty cheap.
Good luck

Jan 25, 2009 | 1995 GMC Suburban

1 Answer

Blower fan only works on high can you help

I have a 95 suburban and it has a resistor module mounted to the heater plenum under the dash. It has a plug on the out side and 2 screws holding it in place. It is about 2x3 inches. It just looks like a flat plate on the outside. The resistor module has 2-3 resistors and it basically routes the power to the fan thru one of the resistors. The more resistance the slower the fan turns. That makes up the 3 speeds.
There is also a chance the motor is going bad and requires the full speed power to make the motor operate.
The resistor module is basically forward of the passengers left knee. If you know anyone with a meter, they could check it out for you.
If you have power at your motor plug on all 3 speed settings, chances are your motor is bad. You can get used ones from a salvage yard pretty cheap or buy a new one.

Jan 19, 2009 | 1996 GMC Suburban

1 Answer

1990 gmc 1500 heater motor does not turn on

The fan switch itself is a possibility, but there is also a resistor pack behind the glove compartment. Hi speed doesn't use the resistors, though, so if it doesn't run on hi, it narrows it down to the switch, the motor, the motor ground, or the blower relay, or any of the associated wire connectors.

Dec 14, 2008 | 1990 GMC Sierra

Not finding what you are looking for?
1993 GMC Suburban Logo

388 people viewed this question

Ask a Question

Usually answered in minutes!

Top GMC Experts


Level 3 Expert

77202 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22265 Answers

Ronny Bennett Sr.
Ronny Bennett Sr.

Level 3 Expert

6927 Answers

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

Answer questions

Manuals & User Guides