ambient air pump: when is it turned on?

[Konstantin Bogach]

Does anybody know GM part number?

Kneale Brownson wrote:

> I think the aspirator fan runs whenever the climate control system is
> on.  For sure, it runs when the requested temperature on the CC head is
> greater than the ambient outdoors temperature.  Once the temp setting on
> the CC head is reached, the aspirator fan MAY cycle (someone suggested this
> possibility in an earlier discussion wrt replacing the fans with a GM
> product to avoid the Audi $$$$$ pricing).
>
> At 03:45 PM 06/30/2001 -0400, Konstantin Bogach wrote:
>
> >Hi listers.
> >
> >When is that sucker on? How to verify that it good without taking it out
> >and applying power directly?
> >
> >I will appreciate your prompt answer while this matter holds me from
> >putting dash back.
> >
> >Speedo's needle fluctuation is fixed. Bad contact was in soldering of
> >the 2 pin connector leg.
> >
> >Thank you.
> >Konstantin Bogach.