Question about 1994 Pontiac Grand Am

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94 Grand Am SE 3.1. The blower fan barely works. I replaced the fan motor and fan resistor. I also read a post that said take out blower and clean front of evaporator. Well, I tried this but couldn't find evaporator through blower motor hole. Anyhow, the fan occasionally will work normally. But for the past week almost no airflow, although I can hear the blower running. Also I checked under the dash and the plate that moves when you turn on ac is working. I am stumped.

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If the airflow is normal sometimes then that most likely eliminates blockage in the evaporator as the culprit. If it were blocked the problem would be continuous, not intermittent.

If you're sure that all of the duct system actuators, and valves (doors) that redirect airflow to the desired vent are working correctly then I suggest that you check the controls and wiring.

The blower switch may be faulty, or have loose or damaged wiring.

Posted on Mar 21, 2011

Testimonial: "I am still working on it but that is a pretty good answer. I really think a duct valve is intermittent."

  • Mike B Mar 21, 2011

    Hi Tecno,
    I am not sure all the valves are working, just the one I could see. I don't know where the others would be.

  • John
    John Mar 22, 2011

    The valves are all inside the duct system/plenum up under the dash. To locate them most likely will require some dash disassembly. From the outside of the duct you can usually locate the valves by looking for wiring, or vacuum line connections that will be attached to the valve actuators. You can check the actuators by removing one at a time and watch it while operating the mode controls to confirm if it is functiong. While each actuator is removed, manually operate the valve arm that the actuator engages. You should feel slight resistance , and be able to hear the valve moving inside the duct if it is functioning correctly.


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Try replacing the in cabin filters for the heater.

Posted on Mar 21, 2011


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

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2002 grand caravan blower motor intermittent replaced resistor

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01 grand.prix ac fan switch only works on high. has a duel temp controller when you turn fan off the only way fan comes back on is to move the temp controller levers

When the Blower Motor Resistor (controls blower speeds) goes bad, the blower motor works only on HIGH SPEED. REPLACE IT.
BLOWER MOTOR RESISTOR Removal & Installation
  • Disconnect negative battery cable.
  • Remove right lower instrument panel insulator panel.
  • Disconnect blower resistor connector located behind right side of dash.
  • Remove blower resistor screws and blower resistor.
To install, reverse removal procedure
Good Luck!! A HELPFUL - 4 THUMBS - rating for this solution would be greatly appreciated. Thank you for using FixYa!!

Feb 18, 2011 | 2001 Pontiac Grand Prix

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My blower fan is not working

Hi, have you check the fuses, if they or good check and see if you have power at blower motor resistor and none at blower motor replace resistor ,if there is power at blower motor replace blower motor.Thanks if i can help just re post.

Jan 07, 2011 | 2001 Jeep Grand Cherokee

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Where is the fuse to the heater fan blower located in my 2005 Pontiac Grand Prix. Owners manual has 3 different fans. Is it the HVAC fuse or one of the 3 fans? The heater fan quit and want to check the...

Hi, should be listed as heater blower motor not fans ,the fans is the ones in front of radiator. most common problems are the blower motor resistor, which is in passenger side compartment near fire wall.This is were your blower motor is also. You can check and see if its getting power to resistor, with a test light if power is at resistor, check and see if you are getting power at blower motor if no power there replace resistor. But if you have power at motor replace blower motor. If i can help further just re post. thanks

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1996 Ply Grand Voyager SE The blower motor

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Info I am looking for is on a Grand Am GT 2001, and the heater went out so we checked the fuses and it worked for a little while and now were not sure if it's the fan it's self or the switch. How can we...

to take a short remove heater blower wire it using jumper wires to car battery.if motor no run or it drags barely runs and noisey.replace motor.if blower motor runs could have a bad switch and blower resistor.besure to check the blower motor relay .

Dec 16, 2009 | 2001 Pontiac Grand Am SE

1 Answer

The fan is cutting out/not working

There are usually three possibilities for this problem, which can only be solved by hands-on electrical testing, in most cases. You could have a bad switch, you could have a bad blower motor, or you could have a bad blower motor resistor. If the bearings in the blower motor begin to seize, it will take more force (read: more electricity) to turn against the friction of the bearings. This may explain why it does not work until a higher setting, and even then it may not work well. On the other hand, if the blower motor itself is okay, the delivery of electricity may have a problem. Your blower motor has a resistor, and this resistor can over time go bad, even rust, which will not allow the full amount of current to reach the blower motor, thus causing it to not run. I usually replace blower motors with a new resistor, but if just the resistor is bad, then only replace that. The switch thing is uncommon, but it is still a possibility, and I can't rule it out. Good Luck finding the problem, barring a complicated electrical issue, it should definitely be one of those three things that has failed.

Thanks for asking!

Nov 12, 2009 | 2001 Pontiac Grand Am SE

1 Answer

2000 grand marquis blower fan stops on lower speeds

there is a resistor for the fan motor which works the lower speeds, you need to replace that, it is normally located near the blower motor, got 3-6 wires plugged in it

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for the fan blower motor it could be the resistor or the fan control speed control switch is bad.for no lights replace the DRL RELAY for the lights. for the heated seats check the fuses.

Jun 01, 2009 | 2002 Pontiac Grand Prix

2 Answers

2002 pontiac grand prix-heater a/c blower only works on high

When the blower motor resistor goes it will still usually work on the high setting because that bypasses the resistor.
First look on the passenger side below the glove box you will see 3 press-pins. You need to remove the 3 press-pins and the panel they are holding up.

Now you will se a bracket holding a bundle of wires and 2 vaccum hoses on the left side of the blower motor see pic. This is held on with 2 screws. Remove the screws and let the bracket hang off to the side.

Now remove the blower motor there are 3 screws to remove the blower motor a plug-in and a black hose. The black hose and plug-in you can not see from this side. You will kinda have to angle the blower motor and push the wire bundle out of the way to remove the blower motor.

Now with the blower out of the way remove the closest screw from the blower motor resistor. Disconnect the plug in from the resistor and carefully slide the assembly to wads you and it should pop down. There are a total of three screws that hold the resistor in but you only have to remove the one.

Now just reassemble the way you took everything apart. Hope this helps. I think the resistor is only like $20.00 at Auto Zone or Parts Source, they also have step by step instruction to.

Good luck

May 08, 2009 | 2000 Pontiac Grand Prix

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