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Can you bypass a blower motor resistor on a Pontiac grand Prix 2003

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  • Pontiac Master
  • 3,828 Answers

Resistor gives you the fan speeds
if you by pass the blower will be full blast all the time
you need to find the 12 volt and earth for the motor to by pass

Posted on Dec 09, 2016

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Posted on Jan 02, 2017

SOURCE: Blower motor not working

Try replacing the blower motor resistor, it has different resistances for each speed. Mounted on the passenger side air duct, it is kind of a ***** to get to but you can see the harness if you invert and shove your head up into the footwell.

Posted on Jul 28, 2008

  • 8 Answers

SOURCE: blower motor only works on high

located under dash next to blower motor itself should be a couple of wires plugged into it

Posted on Dec 30, 2008

StormStrikes
  • 104 Answers

SOURCE: 2003 grand prix blower motor

The only thing that is now coming to mind, with that information, is that they may have given you the wrong blower motor resistor (putting too much resistance in the circuit and thus causing the motor to run slower) or the motor itself is going bad (not common in that they go bad that way, they usually just fail) or your ignition switch is getting a lot of carbon build up in it.

GM runs the power through the accessories through the ignition switch and the heavy load causes carbon build up on the switch contacts and can cause issues. Commonly, however, when that happens, there are issues with other accessories such as the radio, Drivers Information Center, etc.

Theres no easy way to test if its the ignition switch or the blower motor itself that I am aware of. So I suppose the next question would be did it have this exact same issue before you replaced the blower motor resistor.

Also, if you like, there is a Grand Prix community online at www.grandprixforums.net that may be able to offer further insight if you want to sign up there and see if you can get further assistance from there.

Posted on Feb 03, 2009

jsmes1027
  • 749 Answers

SOURCE: 2001 Grand Prix: Is the blower motor resistor on a Pontiac 2001 Gra...

It is behind and underneath the glove box back by the firewall. No need to pull out the glovebox.You may need to pull the carpet back to get to one of the bolts.

Posted on May 18, 2010

  • 53 Answers

SOURCE: 2001 Grand Prix: can't find the blower motor resistor on 2001 Grand...

Under the passenger side of the dashboard is a carpeted cover you'll need to remove. Once that's out of the way you'll see the blower motor on the RH side and just to the left of it right next to the frontwall is the blower motor resistor held in by two screws.
Here's a picture of the old design (right) versus the new design (left).

Posted on May 31, 2010

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Dec 03, 2015 | 2004 Pontiac Grand Prix

1 Answer

Ac/heater doesn't turn off on a 2004 Pontiac grand prix


Usually a break down in the Blower Motor "resistor" the resistor is bad, not the blower motor...you may need to unplug the blower motor until you find and install the resistor...your parts store can confirm the right part, and location. Hope this helps.

Feb 23, 2015 | 2004 Pontiac Grand Prix

1 Answer

2001 Grand Prix: can't find the blower motor resistor on 2001 Grand...


Under the passenger side of the dashboard is a carpeted cover you'll need to remove. Once that's out of the way you'll see the blower motor on the RH side and just to the left of it right next to the frontwall is the blower motor resistor held in by two screws.
Here's a picture of the old design (right) versus the new design (left).

May 17, 2010 | 2001 Pontiac Grand Prix

1 Answer

The heater and a/c in my 2003 grand prix will on


Your blower motor resistor is the problem.
The blower motor resistor is located near the blower motor on the passenger side in the heater case. The resistor is held in by two screws and has one electrical connector that plugs into it. Purchase the resistor and you will know exactly what you are replacing. Good luck

Mar 29, 2010 | 2003 Pontiac Grand Prix

1 Answer

I have a 2003 GTP and at times the heater fan stops working and now the display unit quits working and it says the fuel is low but I have 3/4 of a tank


I believe that these are two separate problims. The Heater fan stops working because the blower motor resistor block is bad. This is a common problem on the 03 Grand Prix. You'll need to remove the blower and replace the resistor block. The blower is under the center of the drivers onsole.

Oct 11, 2009 | 2003 Pontiac Grand Prix

1 Answer

Fan only works in the off and 5 position, does not work in 1to 4


You probably need to replace the blower motor resistor. Located on the blower motor below your glovebox. about $25 for the resistor.

Apr 10, 2009 | 2003 Pontiac Grand Prix

1 Answer

Blower works on 5 only


I don't claim to know why the lights are affected but when a heater blower only works on the fastest setting, it is normally due to the failure of a stepped series resistor which has taps to set the different speeds.
As emissionwiz stated, that is the most common cause.
This resistor may be mounted on the firewall under the hood or near the blower motor. 
Without an electrical diagram at hand, I can't say for sure but there may be a relay failed that bypasses the resistor completely when set on the highest speed or diverts the current through the resistor. 

Mar 16, 2009 | 1997 Pontiac Grand Prix

2 Answers

I'm looking for the location of the resistor on the blower motor of a 99 pontiac grand prix


If it is the same as a 2002 Grand Prix the resistor is located on the firewall behind the blower motor up under the glove box. You need to remove the blower motor to get to it.

Mar 12, 2009 | 1999 Pontiac Grand Prix

1 Answer

Blower motor not working


Try replacing the blower motor resistor, it has different resistances for each speed. Mounted on the passenger side air duct, it is kind of a ***** to get to but you can see the harness if you invert and shove your head up into the footwell.

Jul 27, 2008 | 2003 Pontiac Grand Prix

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