Last post on Aug 04, 2010 at 4:18 PM
You are in the Pontiac Grand Am
What is this discussion about?
Pontiac Grand Am, Heating / Cooling, Sedan
#3 of 91 Re: Fan problems 1999 Grand Am [july1979]
Oct 27, 2006 (6:11 am)
My cousin has a 1999 (mine is a 2003). When I bought mine he came over to look at it and mentioned he hoped they had fixed the problem. I remember him fixing it himself so it can't be that hard.
#4 of 91 Re: Fan problems 1999 Grand Am [burdawg]
Oct 27, 2006 (9:23 am)
I've had the same problem with the resistor board. I also cannot get the rear screw out! How did you accomplish this? It seems to be an odd size too, do you happen to remember the size?
#5 of 91 Re: Fan problems 1999 Grand Am [jsabat]
Oct 27, 2006 (3:52 pm)
I don't remember the exact size, but I used a small ignition wrench (a small wrench made out of stamped steel) and just turned it out a little at a time. I believe it was something like 11/32 but I'm not sure.
#6 of 91 heater blower in car
Feb 25, 2007 (5:12 pm)
my heater/defrost/ac was working fine the other day in my 2004 grand am gt and now it does not blow any heat or air in any setting. what can be wrong with it?
#7 of 91 Re: heater blower in car [latin198]
Feb 25, 2007 (10:07 pm)
It could be any number of things. Blower motor out, fan control board, or the switch itself.
#8 of 91 Problems w/climate control
May 01, 2007 (9:26 am)
my car (2005 Pontiac Grand am), the climate control won't switch from defrost, vent, heater, the blower works fine and it's hot when I want hot and it's cold when I turn on the ac, but I can't switch between the different functions. There is a hiss sound that comes out from behind the knob that does the switching, what do I need to check/fix?
#9 of 91 Re: Problems w/climate control [nncrffnbrd]
May 02, 2007 (5:37 am)
Pull the knob off and see if the back of it has broken. Look closely in the area where it goes on the shaft. That control puts the most pressure (torque) on the knob and it's not uncommon for it to crack and slip over the shaft instead of turning it. If that's the problem you can use one of the other knobs as a replacement. The knobs are not expensive, about $5.00 or so on Ebay.
I've owned three GA's and have had to replace that knob on all of them at one point or another.
If it's not that and it is the mode control switch itself, then the entire assembly (fan speed, temp, mode control) has to be replaced since it's supplied as a unit.
I'm willing to bet though it's just a cracked knob.
#10 of 91 climate control know
May 02, 2007 (6:25 am)
Thanks, the knob had broken already and I've done just what you said, used one of the other ones, but even though the other is a good fit and all, I can turn the knob to the different positions and it's just now changing. I can also hear a slight hiss. If it's the other thing you said had to be replaced have you any idea what that costs?
#11 of 91 Re: climate control know [nncrffnbrd]
May 02, 2007 (9:56 am)
$138.70 at GM Auto Parts.com. Look under instrument panel/cluster and switches/temp control.
Are you sure that the knob you put on isn't also damaged? If you can hear the hiss all the time, regardless of the setting, then it's probably leaking vacuum. This can also happen if it's between positions since it vents vacuum under certain settings, that's why I say to be sure that the knob, even if it's a different one, isn't also damaged. You may want take the knob off and try using a pair of pliers (carefully) to turn the shaft to test it and make sure.
#12 of 91 climate control knob
May 02, 2007 (3:48 pm)
Yeah I'm sure it isn't damaged. Just my luck it would have to be something like this....shoot! Thanks for your input. Guess when my income tax check comes in I can get it fixed maybe. *sigh*