Oil pump or sending unit?

Asked by Apr 23, 2016 at 06:11 AM about the 2007 Chevrolet Avalanche LTZ 4WD

Question type: Maintenance & Repair

2007 Chevy Avalanche
Oil pressure dropped to zero while driving, started dinging
and check engine light is also on.  Stopped driving
immediately, engine sounds great, no noises or knocking.  
Checked oil, oil is full and good.  Start the car up and oil
pressure is normal for 5 or so min, then drops down again.   
Have since drove about 20 to 30 miles in short trips. Still no
odd engine noises. Just wondering what is the problem.  
Truck has about 62000 Miles on it.
Chevy dealer is picking up tomorrow, just curious what
people think it is, I wanna know, before worrying for the
next couple days

3 Answers

72,325

Common problem. There is a basket looking screen under the Oil Pressure Sending Unit that will get gummed up. Just need to take out the Oil Pressure Sending Unit on the back of the engine, fish out the screen and clean it. Since you have gone threw the trouble of taking out the OPSU. should just replace it. When the screen gets gummed up, the gauge on the dash will read inaccurately.

115

Yes, probably that sending unit. The first thing that makes noise on an engine like that with low oil pressure is the lifters. But if I went to the effort to remove that sending unit to clean it, I would just put in a new one, because it is a very inexpensive part. With that sending unit removed you can also hook up a gauge to get the actual oil pressure. We spend all this money on cars, and all we get is idiot lights. There should be a law! Good luck.

72,325

Before checking the oil pressure, that screen would need to come out first, as I said, it is under the Oil Pressure Sending Unit.

1 of 1 people found this helpful.

Your Answer

Add photo

Related Questions

  • Oil pump or sending unit? 2 answers

    2007 Chevy Avalanche Oil pressure dropped to zero while driving, started dinging and check engine light is also on. Stopped driving immediately, engine sounds great, no noises or knocking. Check...

    2007 Chevrolet Avalanche LTZ 4WD

    -

    Maintenance & Repair

  • Oil pump or sending unit? 3 answers

    2007 Chevy Avalanche Oil pressure dropped to zero while driving, started dinging and check engine light is also on. Stopped driving immediately, engine sounds great, no noises or knocking. Check...

    2007 Chevrolet Avalanche LTZ 4WD

    -

    Maintenance & Repair

  • temperature sending unit 1 answer

    temperature sending unit location

    2003 Chevrolet Avalanche

    -

    Maintenance & Repair

  • Fuel pump or fuel filter 3 answers

    I have a z71 2005 Chevy avalanche how can I tell if it's the fuel pump or fuel filter

    2005 Chevrolet Avalanche 1500 LT

    -

    Maintenance & Repair

  • after replacing oil pump, oil pressure is 60-70 lbs. is this too high? 3 answers

    before new oil pump was installed, oil pressure was 40-45 lbs. after new oil pump was installed, oil pressure is 60-70 lbs. is this too high?

    2007 Chevrolet Avalanche LT 4WD

    -

    Maintenance & Repair

Avalanche

Looking for a Used Avalanche in your area?

CarGurus has 4,800 nationwide Avalanche listings starting at $1,999.

ZIP:

Search Chevrolet Avalanche Questions

Chevrolet Avalanche Experts

#1 Tom Demyan
Tom Demyan
Reputation 300
#2 David Scott
David Scott
Reputation 160
#3 Oscar Leon
Oscar Leon
Reputation 150
View All

Related Models For Sale

Used Chevrolet Silverado 1500
1,932 Great Deals out of 182,333 listings starting at $999
Used Ford F-150
2,091 Great Deals out of 192,317 listings starting at $290
Used Chevrolet Tahoe
593 Great Deals out of 33,019 listings starting at $1,500
Used Cadillac Escalade EXT
27 Great Deals out of 687 listings starting at $5,495
Used GMC Sierra 1500
791 Great Deals out of 67,993 listings starting at $1,700
Used Dodge Ram 1500
398 Great Deals out of 10,886 listings starting at $1,000
Used Toyota Tundra
416 Great Deals out of 34,266 listings starting at $1,950
Used Cadillac Escalade
198 Great Deals out of 10,896 listings starting at $2,500
Used Chevrolet Colorado
250 Great Deals out of 27,512 listings starting at $1,000
Used GMC Yukon
419 Great Deals out of 20,457 listings starting at $1,495
Used Toyota Tacoma
549 Great Deals out of 42,268 listings starting at $1,995
Used Honda Ridgeline
92 Great Deals out of 4,768 listings starting at $2,900
Used Chevrolet Suburban
269 Great Deals out of 19,224 listings starting at $1,999
Used Nissan Titan
175 Great Deals out of 18,876 listings starting at $3,995

Used Cars For Sale

2012 Chevrolet Avalanche LTZ 4WD For Sale
85 listings starting at $16,995
2011 Chevrolet Avalanche LTZ 4WD For Sale
5 Great Deals out of 143 listings starting at $14,850
2010 Chevrolet Avalanche LTZ 4WD For Sale
3 Great Deals out of 100 listings starting at $9,995
2009 Chevrolet Avalanche LTZ 4WD For Sale
4 Great Deals out of 68 listings starting at $11,997

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.