1997 Pontiac Grand Prix Logo
Posted on Nov 12, 2010

Where is blower motor resister located on 1997 Grand Prix 3.1L V6 diagram would help

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  • Posted on Nov 17, 2010
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I was just reading an article by Lynn Rademacher on EHow. This woman doesn't know the first thing about this unit. The blower motor resistor on a 1997 Pontiac Grand Prix is more or less a module which contains resistors (yes plural meaning more than one) to regulate the speed of the blower motor.
Depending on the speed settings in your car controlling the blower motor anywhere from 3 to 5 speeds are possible. On most Pontiac Grand Prixs (and I've owned a 1990, 2 1998's a 1996 and a 1997 and a couple of Oldsmobiles which work the same way) there are probably 5 settings. Each setting has a resistor regulating the speed of the motor except for the high setting which does not have a resistor associated with it. It's just full 12 volts to the motor. I've had a resistor module which was a printed circuit board and several that are an assembly of welded resistors. This type is much better as the printed circuit ones have a tendency to crack or in one case the resistor fell off due to possible over heating of the circuit. These were only soldered in place. Getting to the point of location; all these vehicles have the blower motor and resistor module located under the glove compartment on the passenger side of the vehicle. There is usually a grey felt covered panel made of fibrous material under the glove box that has to be removed in order to get to the blower motor and resistor module. First and foremost you have to be a contortionist to get to the screws holding the blower motor in (more than likely 3 screws. Use a 7/32 socket to remove) If you can reach and unplug the resistor module connector from the blower motor do that first. This is located at the back of the motor (GM designers really knew what they were doing here). The connector has a latch which is a pain in the you know what to undo. This is all done by feel as you cannot see what you are working on. If you have a little mirror so that you can see behind the motor may help. But once you put your hand back there forget the mirror. There is also a larger connector engaged to the resistor module. It's about an inch long and has several wires running to it. Disconnect that one first if you can. It is also "latched" so you have to relieve the latch before you can pull the connector out. If you were successful in disconnecting the connectors, remove the 3 screws holding the blower motor. It will drop down and may be a pain getting out as the area is quite cramped. There are also 3 screws (same socket size) holding the resistor module in. 2 on one side and 1 on the other. You only need to remove the one or ones in front that are easily accessible. The one or ones in the back only may need to be loosened or maybe not at all. The mounting positions for the module are slotted so the part can be removed by sliding it slightly forward and then down. Reverse the procedure for putting everything back together. Resistor module first. Replace the large connector there. Then the blower motor. The blower motor by the way will only align with the mounting holes one way so make sure you can see there alignment first before you put any screws back in. The rubber ring going around the perimeter of the motor housing should lock into the mounting bosses to ensure correct alignment. Also there is a short bent air hose which evidently cools the motor while it is running attached from the motor to the housing that the motor mounts to. Make sure this gets connected. Holding the motor in place while trying to get one screw in is also a pain in the ****. Replace the fiber cover (or not) with the 2 or 3 little push in plastic gizmos. Upon completing this task your sides and back will take a while to get back to normal. Good luck!!!

  • Anonymous Nov 17, 2010

    In addition to the description I just gave for finding and replacing a blower motor resistor and blower motor I wanted to add that if it still does not work and you know the resistor is good then the problem is in the ignition wiring harness that runs from the ignition switch down to the huge connector it plugs into. Don't ask me why cause I don't know. I've had this same problem twice and replacing this harness resolved the situation. It also resolves the problem of the automatic headlights that come on when you start the vehicle. I've had the blower motor switch turning off these lights depending on what position you had the blower motor fan regulated at. The first four setting turned off the headlights but they stayed on when the blower motor was on full blow. Turning on the headlight switch bypassed this problem.

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1991 Pontiac Grand Prix SE. I need the fuse box diagrams please. I bought the car used and it didn't come with any of the covers.

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If all of those are blown, you are in for a whole lot of heartache! Cigarette lighter overloaded, easy fix. Blower motor, probably the resistor, fairly easy fix if you can get to it. Windows, relays, or if only on drivers side, broken wires where door meets frame.

Fuse Box Diagram Pontiac Grand Prix (1997-2003)

https://fuse-box.info > pontiac > pontiac-grand-prix-19...
Fuse box diagram (location and assignment of electrical fuses and relays) for Pontiac Grand Prix (1997, 1998, 1999, 2000, 2001, 2002, 2003).


https://www.google.com/search?q=1991+pontiac+grand+prix+se+fuse+box+diagram

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I have a 97 Pontiac Grand Prix, The blower motor only work on high. I have replaced the switch, the resister, and the blower motor. Also when I turn the blower motor on in any of the first 4 position the...

Wires need to be tested at certain points to find out whats going on. It could be as simple as a bad ground somewhere. This needs to be looked at by someone with experience so that more damage is not done. Hope this helps.
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Where is the blower motor located on a 1998 pontiac grand prix se?

under the dash below the glove box
if the blower motor is inop then
1st check for power on the purple wire at the blower motor
if it has power then you need a blower motor
if it does not have power then replace the resister
located beside the blower motor5-7 wire connector
TRICK TO REMOVING THE RESISTER
you will see 2 goldish colored bolts they are 5.5mm remove them
now the TRICK
there is a 3rd bolt you can't see pull down then pull towards you
this will BREAK THE RESISTER OR SLIDE OFF THE BOLT
then when the resister is out LOOSEN THAT BOLT OFF
the resister is slotted slide the NEW RESISTER in the bolt you just loosened then tighten the other 2 leave the hiden bolt loose
hope this helps
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You need a blower motor resistor, it's located in the blower housing under the dash
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Heater blower motor

the heater blower motor is located undr the glovebox there are 3 small bolts holding it in place, 7/32 socket i believe after loosening these you will most likely have to move the wirring harness that goes through the floor to get the motor to drop down. after the you get the motor to drop down there is a large vaccum line that goes into the side of the motor gently pull this out be careful not to pull the other end of the vaccum line loose from inside the car. the is a power plug in the side of the motor that u will need to unplug to free up the blower. because it is hard to see the power plug needs to be pressed down on the top and pulled simaltaniously.
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Heater stays on hi havc won't turn off all fuses good

The resister is located under the dash in the passenger footwell area. It is to the driver's side of the blower motor up against the firewall.

To remove, it's easiest to remove the passenger seat to lay down on the car floor. Next, find the blower resistor, remove the connector, remove the one front bolt and just loosen the two bolts by the firewall. Pull the resistor down and out from the two bolts. Installation of the new resistor is the opposite of removal.

Hope this helps
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