2005 Pontiac Grand Prix oil pressure

2005 PONTIAC GRAND PRIX
74,000 MILES • 6 CYL • FWD • AUTOMATIC
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KBTOY
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I have a 2005 pontiac grad prix with a 3.8 a while ago the oil pressure gauge began sticking at 120 lbs then it began to fluctuate now it is at 0 where is the iol pressure switch located
Nov 10, 2008 at 8:56 AM
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MMPRINCE4000
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Switch is under the PS pump.

If you are getting any valve noise have the oil pressure tested with a mechanical gauge.
If not, then I would change the oil pressure switch.

It is also possible the gauge itself is bad.
Nov 10, 2008 at 9:48 AM