My 05 DeVille DHS loses oil! Not all of the time! The oil loss can be 3 to 4 qts at a time while driving. Any ideas of what I should look for? Filter and drain plug are not leaking.

40

Asked by Aug 31, 2015 at 11:32 AM about the 2005 Cadillac DeVille DHS Sedan FWD

Question type: Maintenance & Repair

5 Answers

71,875

Most likely it's the oil pressure sending unit. They're prone to leakage and failure. However, don't buy an aftermarket one. Get an AC Delco replacement. For some reason, aftermarket ones don't work correctly in these engines. HTH. -Jim

1 of 1 people found this helpful.
40

Thank you Mark. I will check that out. Do you know it's location please?

1 of 1 people found this helpful.
40

I am running the car now and looking underneath. I see a constant dripping of oil now that the motor is warm. Coming from the right passenger side of the motor. Close to where the main crank seal would be and belt and pulley's.

2 of 2 people found this helpful.
69,695

Sound,s like your front main seal is bad,not to bad to fix,just have to remove the harmonic balancer to replace.

1 of 1 people found this helpful.
Best Answer Mark helpful
40

It looks like I will need to get my technician with a hoist. Have him take a good look at it and check that out. Thank you all for your answers.

1 of 1 people found this helpful.

Your Answer

DeVille

Looking for a Used DeVille in your area?

CarGurus has 1,512 nationwide DeVille listings starting at $1,999.

ZIP:

Cadillac DeVille Experts

  • #1
    kikero
    Reputation
    2,250
  • #2
    Js08016
    Reputation
    1,940
  • #3
    Cynthiasmith
    Reputation
    1,700
View All

Related Models For Sale

Used Cadillac DTS
50 Great Deals out of 1,556 listings starting at $2,480
Used Cadillac CTS
281 Great Deals out of 11,141 listings starting at $2,950
Used Lincoln Town Car
30 Great Deals out of 1,723 listings starting at $1,004
Used Cadillac Escalade
267 Great Deals out of 12,721 listings starting at $2,000
Used Chevrolet Impala
569 Great Deals out of 36,803 listings starting at $990
Used Cadillac STS
39 Great Deals out of 940 listings starting at $2,800
Used Mercedes-Benz S-Class
167 Great Deals out of 8,060 listings starting at $2,000
Used Chrysler 300
350 Great Deals out of 20,653 listings starting at $900
Used Ford F-150
3,209 Great Deals out of 239,372 listings starting at $1,300
Used Dodge Charger
373 Great Deals out of 33,495 listings starting at $2,000

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.