Fan motor only works on high - 03 GP GT - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 12-11-2007, 11:23 AM   #1
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Default Fan motor only works on high - 03 GP GT

The fan motor on my brother'* 2003 GP GT will only operate on the high setting.

I had a similar problem in an old Cavalier. Ended up being the resistor board in the fan housing. But, I didn't learn that until after I wasted the money on a new switch.

Is there anyway to determine which component is faulty? Not sure what the testing procedure would be.
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Old 12-11-2007, 11:51 AM   #2
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it'* the Blower motor resistor. My brother'* 98 GP GT had the same issue and that'* what it was.
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Old 12-11-2007, 12:01 PM   #3
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Awesome!

How hard is it to change it on that car? And where did you locate a new one?
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Old 12-11-2007, 12:23 PM   #4
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umm... the dealer will quote you a bunch cause I think it calls for 3-4 hours of labor alone.

Not sure how hard it is to get to to do it yourself. I don't think it took more than an hour for our mechanic to do it.

I believe my mechanic got the one for my brother'* car from either Napa or Carquest. GMPartsdirect seems to list it for under $20. Might want to call the pontiac dealer and get the proper part number and put it in just to verify it is the right one.
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Old 12-11-2007, 12:34 PM   #5
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Screw the dealer. Go to Auto Value and pay them $30'ish dollars (was $28.xx the last time I bought one), and then recline the passenger front seat.
I'll warn you it'* not fun if you are over 3 feet tall, but it can be done, and only takes me 10-15 minutes to replace.
There are 2 plugs IIRC, and 3 or 4 screws -the one on the side closest to the firewall is an absolute B!TCH, but I usually just break the old resistor out once I have only that screw left. Then I remove that screw and leave it out when I put the new resistor in -I leave it out because it'* not required and I know me or the next person that changes it is going to curse because I know the resistor is going to burn out -it'* a fact considering every W-body anybody I know has has had this problem.
Just cross your fingers the one in the Regal doesn't go bad -that'* $350+ from a dealer and the only place I've been able to find a Buick Regal Blower Fan module (Digi Climate Control Regals and Century'* used a module, not a resistor) except for Ed Morad, who I just bought one from for $25.75 shipped. He said he has a handful of them pretty much all the time, so that'* a relief if waiting a couple days for shipping isn't a problem.
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Old 12-11-2007, 12:50 PM   #6
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Quote:
Originally Posted by OLBlueEyesBonne
Screw the dealer. Go to Auto Value and pay them $30'ish dollars (was $28.xx the last time I bought one),
The one on GMPartsDirect was listed as $13.xx. I just mentioned the dealer to make sure it'* the right pn.
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Old 12-11-2007, 01:15 PM   #7
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Quote:
Originally Posted by JimmyFloyd
Quote:
Originally Posted by OLBlueEyesBonne
Screw the dealer. Go to Auto Value and pay them $30'ish dollars (was $28.xx the last time I bought one),
The one on GMPartsDirect was listed as $13.xx. I just mentioned the dealer to make sure it'* the right pn.
Yeah, I realize the GMPD price is lower initially, but how about after shipping? I'm guessing it'* gonna be close, but the local parts store should have one 'RIGHT NOW' -I know Napa, Carquest, Orielly'*, and Auto Value all have them in stock locally, which is very nice to know.
As for going to the dealer for one, I believe seeing how many of the originals have gone bad and the fact that a couple (never seen one go bad either) of the aftermarket units I've installed from Auto Value are still in good working order 3-4 years later it might be worth trying, but then again the originals last about 5-7 yrs, so the AV unit'* may be on their last year or two.
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Old 12-11-2007, 01:41 PM   #8
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Sweet! Thank you for all the info guys. This sounds VERY similar to what I had to go through on my old 97 Cavy. Couple scraped knuckles and 45 minutes of my time and I was done.

I found a couple good pages on how to do this:

http://www.oqcgp.com/forum/kb.php?mode=article&k=70
http://wiki.answers.com/Q/How_do_you...motor_resistor

I'll do it for him as soon as he buys the part.
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Old 12-11-2007, 10:07 PM   #9
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Got it swapped this evening. $21 for a new one from Advance Auto w/ a one year warranty.

Took about 30 minutes and got some beat up knuckles!

He'* good to go now! Another satisfied customer!
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Old 12-11-2007, 11:46 PM   #10
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Good deal. Glad we can help. Onto the Wipers. I'll check the 98 GP service manuals if I can find them.
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