1999 Pontiac Grand Prix low pressure valve

1999 PONTIAC GRAND PRIX
215,000 MILES • 6 CYL • 2WD • AUTOMATIC
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BOOMERT68
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Do you have a picture or diagram that would show me where the low pressure valve is located on my GP?

Also, do you have a diagram of replacing the ignition switch?

Thank you,
Brandon
Jun 22, 2010 at 4:20 PM
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SATURNTECH9
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Which model grand prix do you have?Do you mean the a/c low pressure switch?Also are you taking about the electrical ignition switch?
Jun 22, 2010 at 6:34 PM
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BOOMERT68
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It's a 1999 pontiac grand prix SE 4 door 3.1L and yes I am looking for the low pressure valve for the a/c to refill it with freon. I have found two but want to make sure I am using the right one.

Yes I am also asking about the electrical ignition switch under the steering column. I heard that replacing that will keep my lights diming and make my a/c controls 1-4 work again.
Jun 23, 2010 at 9:56 AM
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SATURNTECH9
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[quote:c667618139="boomert68"]It's a 1999 pontiac grand prix SE 4 door 3.1L and yes I am looking for the low pressure valve for the a/c to refill it with freon. I have found two but want to make sure I am using the right one.

Yes I am also asking about the electrical ignition switch under the steering column. I heard that replacing that will keep my lights diming and make my a/c controls 1-4 work again.[/quote:c667618139]
The low side of your a/c system will have the smaller nipple of the two.As far as your ignition switch taking out your dash light's and your inside blower fan i don't know about that i would think you would loose your radio and other stuff like that.Did someone trouble shoot the switch and tell you it was bad?
Jun 23, 2010 at 8:43 PM