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Why does my oil level light come on when the oil level are okay?

Tiny
TRYPHINAB
  • MEMBER
  • 2006 PONTIAC GRAND PRIX
  • 58,500 MILES
I drive a 2006 Pontiac Grand Prix and my oil is at the right level but when I start my car the oil level light comes on. What is causing this problem and should I take it back to the dealership and let them run a diagnostic. The oil light didn't come on the dashboard it came on the driver information center.
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Tuesday, October 9th, 2012 AT 8:52 PM

7 Replies

Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Hello,

You have an oil level sensor that needs to be replaced here is a guide and some diagrams below to help you get the problem fixed. You will need to drain the oil.

https://www.2carpros.com/articles/how-to-change-engine-oil-and-filter

Check out the diagrams (Below)

Let us know what happens and please upload pictures or videos of the problem.

Cheers
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Tuesday, October 9th, 2012 AT 8:58 PM
Tiny
TRYPHINAB
  • MEMBER
  • 2 POSTS
Yep I got the part for $37.00 and replaced it the light is now off. Thanks for your help I cant believe this site is free god bless you !
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Tuesday, October 9th, 2012 AT 9:41 PM
Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Good to hear, please use 2CarPros anytime we are here to help.

Cheers
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Tuesday, October 9th, 2012 AT 10:17 PM
Tiny
JARMANDO1978
  • MEMBER
  • 1 POST
  • 2003 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 83,425 MILES
Electrical problem
2003 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic 83,425 miles

I just buy a 2003 pontiac gran prix and the oil level light is on, I had check the oil levels in engine and transmission and it seems to be ok! But the light still on, it could be an electrical problem or something more serius.
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Thursday, March 15th, 2018 AT 12:59 PM (Merged)
Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
What you need to do is hook up an oil pressure gauge to where the oil pressure sending unit is-If normal replace the OPSU. If not could be engine bearings/oil pump./Sludge problem in crankcase.
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Thursday, March 15th, 2018 AT 12:59 PM (Merged)
Tiny
CHICKIE399
  • MEMBER
  • 1 POST
  • 2005 PONTIAC GRAND PRIX
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 36,000 MILES
Engine Mechanical problem
2005 Pontiac Grand Prix 6 cyl Two Wheel Drive Automatic 36000 miles

The car "uses" oil, as stated by the dealer. No oil seen in engine, and no oil in driveway where it's parked. I've had the car in twice for oil consumption tests, since GM indicates that it's "acceptable" to "use" 1 quart of oil for 2,000 miles. My question is, how much oil must be lost before the "low oil level" light appears? I'm taking the car in to the dealer tomorrow for the 4th oil consumption test (it's every 500 miles and it's now 2,000 miles) and I checked the dipstick today and the oil level is below the 5th hole on the dipstick.
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Thursday, March 15th, 2018 AT 12:59 PM (Merged)
Tiny
MMPRINCE4000
  • MECHANIC
  • 8,548 POSTS
Low oil level light would appear if oil level did not appear on dipstick.

If it is not leaking it, it is burning it and you sometimes cannot see it.

I doubt GM will do anything about it unless it consumes more oil than their guidlines, because they would probably replace the engine rather than repair it.
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Thursday, March 15th, 2018 AT 12:59 PM (Merged)

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