Question about 2005 Pontiac Grand Prix
Blower will not turn off even when engine is off and keys out of the ignition.
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: 2004 Grand Prix blower
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.
Posted on Sep 10, 2008
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
doesnt work on all speeds? ck the big purple wire at the blower motor, on high speed, it should have battery voltage, if it does, then check the black wire, it should have "0" volts (or ground it, see if it then works). If the purple wire does not have power then fuse #30 (30 amp) may be bad.If the black wire has more than "0" volts then the ground may be bad or the "blower motor control processor" =( resistor) is bad, or the ground for it is bad. the ground wire ends up at the cross beam behind radio. If you ground the black wire at the resistor, and it works, then you have a bad ground at the wire, behind the radio. Good Luck.
Posted on Sep 29, 2009
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
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