2004 grand prix GT2, blower motor stays on weather engine is running or not.

https://www.bing.com/search?q=2004+grand+prix+serpentine+belt+diagram&form=EDGNTC&qs=AS&cvid=738d3f0931444115b44f6f066f182f85&pq=2004%20grand%20prix%20ser

Likely blown fusible link, or you have interrupted circuit to the ignition switch or tripped security system. Best bet is blown fusible link.

04-08 Pontiac Grand Prix - Blower Motor Resistor ... - YouTube

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https://www.youtube.com/watch?v=Cn0HeJP8bZQ
Oct 8, 2012 - Uploaded by GPVlog
04-08 Pontiac Grand Prix - Blower Motor Resistor ReplacementPart 1 ..... Loosen, but do not remove the two frontward screws, then remove the single rearward .... Pontiac Grand Prix StereoRemoval 2004-2008 - Duration: 4:27. by Factory Car Stereo ...Pontiac Grand Am ,HVAC, Heater Fan will not turn on.

04-08 Pontiac Grand Prix - Blower Motor Repair (Part 1 ...

see if the noise goes away in a right hand curve, if it does its probably wheel bearing,because you will be lifting weight off it in the turn, also check to see if you have a bubble or seperation in the tire.

i have an 04 gt2 had the same problem. Clean the throttle body ,that should take care of it.

The first place i would look at is the heater blower motor resistor these are known to over heat the wire connector that plug into them.And if your heater fan is only coming on with 1 speed or none at all then you will need to replace the resistor.Go to www.rockauto.com for the best price on these parts.

The blower should stay on for about 5minutes to cool the engine off. It isn't a problem unless it is running continuously after the engine is cooled.

try the blower motor resistor and blower motor relay

SOUND LIKE BLOWER MOTOR RELAY DEFECTIVE.

assuming you know where your blower motor is you can check the motor for power with the switch on and see if you have battery voltage at the connector. if you do then it is a bad blower motor. Most of the time when a resistor goes out it will work on high only but no other settings. with it not working at all seems to be motor. Hope this is helpful.