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· Super Moderator
2010 DTS
89,562 Posts
If it was the CHECK OIL LEVEL message and you had the oil changed, he may not have put enough oil in it. The Northstar takes 7.5 qts. (most cars hold 4-5 qts).
The message comes on when you are about 2 qts low.
Check your dipstick. The proper oil level should be about midway in the hash marked area.

· Master of the Dark Art of Diagnostics
2003 DHS - two-2002 DHS, 2003 SLS, 1995 Sedan DeVille, 1989 Coupe DeVille
22,636 Posts
Hi y'all .
I got a deville 2000 just yesterday a check oil level light came out , I run to the mechanic and change the oil but the still on
Somebody know what could be ???
yesterday a check oil level light came out ,
I run to the mechanic and change the oil but the still on

I bet you didn't read the Owners Manual yet - you should -

like Ranger said - it MIGHT be low on oil -
pull the dipstick and check -

if the oil level is correct -
it's probably a defective oil level switch -

not an uncommon problem -

· Super Moderator
2003 Deville Base
7,608 Posts
if you don't have an owner's manual, check the sticky at the top of this page. Free downloads.

Definitely check the level yourself. Many oil change guys assume 4-5 quarts is full. Our Northstars take 7.5 with filter. I start with 7, check and add as needed so as not to overfill. I've never had the check oil level light come on .

· Administrator
2002 F55 STS, 2014 Explorer XLT, F-150
80,404 Posts
Two "oil" warning messages - "Check oil level" means about 2 quarts low. "Low oil pressure - stop engine" means just that - less than 5 psi. Maybe the sending switch. (Both parts from Rock Auto)

7.5 quarts to the middle of the dipstick hashmark is full.

The oil level sensor sticks out the left (front) side of the oil pan, just below and left of the oil filter and filter adapter. You need to drain the oil to remove and change it. Maybe just the wiring/connector.

Please read the oil level instructions - from GM - for the Northstar at the top of P.3 of the link in Post #1 in the following CF thread -



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