Question about 1998 Buick LeSabre

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Blower motor vent selection switch not working

2003 Buick Century. My blower motor resistor failed. Only had fan high (5). Replaced resistor pack. Yes it was a pain but doable. The next day the problem returned. Fan speed 1-4 not functioning AGAIN!!! $48 shot down the drain. Also noted that the vent selection switch not working, unable to select between defrost, floor, blend etc. Air blowing from defrost and vents at same time. Is there something that could be causing the blower motor resistor pack to be shorted out causing speed control 1-4 to fail??? I dont wont to buy another resistor pack only to have it fail again. Thanks for all the help. I have identical problem with 98 Buick LeSabre / with Digital dual climate controls. Blower motor only seems to work on Windshield defrost setting. Pse advise Corsow1557

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  • Anonymous Mar 22, 2014

    motor fine on blower just no air from vent

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The hvac selector switch in the dash may be the problem.You need to remove the switch and look at the connector on the back of switch,see if there are any burnt wires at the connector or switch.It's all electronic and the switches have been known to burn out on this and other model.

Posted on May 26, 2009

  • DexNLuc
    DexNLuc Jul 14, 2014

    Hvac selector switch is brand new. Wires all look good in connectors.

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Get a manual at autoparts stor or library might have it check heating and cooling . Where the air comes out by the floor board in the center part of the car air box there are. Springs and stuff that break and fall off or just get stuck ,the manual will help wit ur colored hoses

Posted on Jul 15, 2014

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1 Answer

1998 Buick Century w/ manual control, smelled burning odor and blower motor quit working. Control Module?


blower resistor is common to burn causeing smell. check with dealer, there may be a campain on this problem. if not. replace resistor and harness (pig tail) and blower motor..

Jan 21, 2013 | 1998 Buick Century

1 Answer

1996 buick sky lark fan switch wont blow on hight setting


Might be the Resistor pack located close to the blower. It has a flat connector with 4 or 5 wires, and two small screws holding in the duct. It may be a crispy critter. It happens... The blower moves air across it to keep it cool. The blower motor may be bad as well, or possibly the fan speed switch. May very well be the fuse for the blower as well. The blower connector may be loose. Let me know what you find.

Aug 25, 2011 | 2000 Buick Century

1 Answer

The fan speed switch for the heater/ac will not work on the two lowest speeds, only med to high. Went to a salvage yard and got a replacement one, it does the same thing. Apparently there is something...


You need to get the blower motor resistor replaced.This is your problem.It is located by the blower motor.There will be a connector from the blower to the resistor.The resistor controls the fan speeds when you turn the knob on the control head.The blower motor is on the passengers side under the dash.Hope this helps.Good luck.

Mar 05, 2011 | 2003 Buick Century

1 Answer

Heater fan just quit working. Cant find a fuse for it anywhere. Checked the relay and the switch and they seem fine.


Blower Motor not working for all speeds or not at all.

What does it take to get air to come out the vents?

1. Power from the battery or alternator, wiring thru a fuse and possibly an accessory relay to the switch

2. Switch and wiring to channel voltage to the appropriate resistor corresponding to the desired speed

3. Resistor set to reduce voltage to the blower for settings less than high

4. Final wiring to blower and blower itself

Because there is usually no relay between the switch and the resistor, all of the blower current runs through the switch. This sometimes causes the switch to overheat and fail over time. Depending on how the switch is designed, the failure may allow multiple currents to run to the resistor pack, and this may in turn cause the resistor pack to overheat and fail. An example of the circuit I'm describing is shown below:


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Note that if the above switch was to contact both terminals 2 and 3 simultaneously, there would be more current than the resistor pack is designed for. This can burn the resistors and/or blow the thermal breaker. Also note that if the resistor pack fails, the blower can still run at full speed.

Troubleshooting: The last sentence above is a clue.

If your blower is working only on high speed, the likely cause is a failed resistor pack. However, because of the other discussion above, you should also troubleshoot the switch to see if it is the reason the resistor pack failed.

If the blower does not work at all, odds are that the problem is the fuse, relay, or the motor itself.

Repair: The resistor pack is installed in the air stream of the system to help cool the resistors. It is usually accessible from under the dash on the passenger's side or sometimes from the engine compartment along the firewall. It is identifiable by the connector with several wires coming out-some going to the switch and some to the blower motor. The resistor is replaced by unscrewing it from the duct and reinstalling the new resistor pack.

The blower is usually accessible from above the passenger

Sep 21, 2010 | 1984 Toyota Celica Supra

2 Answers

A/C Heater blower fan does not cycle through all speeds


Yes it is the blower Motors Resistor board. It is up behind the blower motor, just under the glove box. You have to remove the black KICK panel with its two "Push Pins" that will break too. There are 3 screws holding that resistor board in, the back two are a bear to get to. Good luck.

Feb 17, 2010 | 1998 Buick Century

2 Answers

Fan switch only works on the two highest settings


the various speeds are controlled through resisters (spring-like in apperance) one of different value for each speed, none for highest speed as the power gets to the blower uninpeeded . the resistor pack should be located on the center of the firewall, held by 2 screws. thats under the hood. where the engine bay ends....

Jul 22, 2009 | 2003 Buick Century

1 Answer

Blower motor resistor


Your blower motor is starting to fail, and needs replaced to fix this. I have this problem on one of my vehicles that is not used often, but in my case the fan will work on the medium setting and function without blowing the fuse, so to save money I hae not replaced mine yet. I yous does nt work on any setting you'll need a new one.

Jul 06, 2009 | 1998 Buick Century

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