2004 GMC not holding oil pressure

Asked by Jan 26, 2017 at 03:19 AM about the 2004 GMC Yukon XL

Question type: Maintenance & Repair

When I turn the car on it shows only about 10 on
the oil pressure and I hear knocking. Flushed out
all the old oil and did full oil and filter change. After
the oil change when I first started it up and acted
the same on 5 to 10 for a few sec then it jump up.
it looks fine. Turned it off later I went to start it
again and it did the 5 to 10 and stayed there.
sounded horrible knocking again and no oil
pressure? No leaks?? Any ideas?

2 Answers

72,145

If this is a high mileage engine, it may be just worn out. Knocking is not good, worn crank & cam shaft bearings. You could try a new oil pump but it would be expensive to do. It is located on the front of the engine. Timing chain cover would have to come off. Or you could pull some bearing caps off the rods, and look at the condition of the bearings.

49,145

Likely time for a rebuild or engine replacement.

Your Answer

Add photo

Related Questions

  • 2004 GMC not holding oil pressure 2 answers

    When I turn the car on it shows only about 10 on the oil pressure and I hear knocking. Flushed out all the old oil and did full oil and filter change. After the oil change when I first started it u...

    2004 GMC Yukon XL

    -

    Maintenance & Repair

  • Oil pressure 4 answers

    My 2004 GMC Yukon oil pressure drops whenever I slow down & occasionally cuts completely off if I'm on a hill or come to an abrupt stop. What is causing this to happen?

    2004 GMC Yukon XL

    -

    Maintenance & Repair

  • Low oil pressure 2 answers

    I have a 2004 GMC Yukon XL SLT 5.3L at warm idling oil pressure is between 10 and 15 psi I have changed sending unit switch, oil pump and connecting rod bearings still have low oil pressure at id...

    2004 GMC Yukon XL 1500 SLT

    -

    Maintenance & Repair

  • why is it losing oil pressure 4 answers

    the oil gauge doesn't say on 40 it often drop down slowing when i stop the truck

    2000 GMC Yukon XL

    -

    Maintenance & Repair

  • is there a screen under the oil pressure sensor 6 answers

    0 oil pressure reading, runs great, no lifter noise, replaced sensor, did nothing

    2007 GMC Yukon XL 1500 SLT-2

    -

    Maintenance & Repair

Search GMC Yukon XL Questions

GMC Yukon XL Experts

#1 TK76
TK76
Reputation 310
#2 Robert Davis
Robert Davis
Reputation 190
#2 kbro
kbro
Reputation 190
View All

Related Models For Sale

Used Chevrolet Suburban
355 listings starting at $1,995
Used GMC Yukon
13 Great Deals out of 725 listings starting at $6,900
Used Cadillac Escalade ESV
186 listings starting at $18,980
Used Chevrolet Tahoe
531 listings starting at $4,995
Used Ford Expedition
13 Great Deals out of 401 listings starting at $2,995
Used Cadillac Escalade
5 Great Deals out of 361 listings starting at $4,980
Used GMC Sierra 1500
182 Great Deals out of 9,143 listings starting at $2,995
Used GMC Sierra 2500HD
23 Great Deals out of 915 listings starting at $6,500
Used Toyota Sequoia
81 listings starting at $5,598
Used Lincoln Navigator
99 listings starting at $3,900
Used Ford F-150
390 Great Deals out of 9,769 listings starting at $1,500
Used Chevrolet Silverado 1500
129 Great Deals out of 9,041 listings starting at $1,695
Used Cadillac Escalade EXT
12 listings starting at $7,995
Used Nissan Armada
5 Great Deals out of 166 listings starting at $4,999

Used Cars For Sale

2017 GMC Yukon XL For Sale
305 listings starting at $51,994
2016 GMC Yukon XL For Sale
43 listings starting at $44,988
2015 GMC Yukon XL For Sale
32 listings starting at $39,988
2014 GMC Yukon XL For Sale
13 listings starting at $33,900

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.