Low oil pressure on 2007 Suburban.

Asked by Sep 23, 2015 at 12:43 PM about the 2007 Chevrolet Suburban LS 1500

Question type: Maintenance & Repair

2007 Suburban.  100k miles, but only driven about 4k miles in the last year.  
No oil leaks on garage, and doesn't burn oil.  Runs great.  No noises or
anything. Checked yesterday and needed 5 quarts.  Today, low oil pressure
light came on.

2 Answers

91,005

If it needed 5 quarts in an engine that only has 6 when full chances are that you have damaged the bearings already, they could be just leaking pressure right by them thus the low pressure light. You should run a manual oil pressure test to be sure it is not a malfunctioning gauge or sender. So if there are no external leaks then the only place the oil can go is through the engine, so it has to be burning oil, the catalysts when they are functioning properly will take care of oil in the exhaust so you won't see it but it changes the way the exhaust smells.

44,735

I agree with Tennisshoes, 5 qts needed in a 6 qt system usually means damage. Get the pressure tested, if it tests out low something (oil pump or bearings) is likely damaged. If the oil didn't leak out it either went out the tailpipe or wasn't filled to the proper level during an oil change. Oil just doesn't vanish. Good luck with it.

Your Answer

Add photo

Related Questions

  • Ticking and low pressure 1 answer

    My 2007 Chevrolet Suburban has a ticking sound and low pressure engine. My oil pressure gauge light appears as it's broken and sometimes the vehicle cuts off when I stop or almost stop. What is ...

    2007 Chevrolet Suburban LT2 1500

    -

    Maintenance & Repair

  • my 2007 Suburban oil pressure gage stopped working and now I have a check engine light on. Simple fix? 15 answers

    2007 Suburban oil pressure gage stopped working and now I have a check engine light on. Simple fix?

    2007 Chevrolet Suburban LTZ 1500 4WD

    -

    Maintenance & Repair

  • Low Oil Pressure 2004 Suburban 4 answers

    I need help!!! I replaced the oil sending unit twice! 1 from auto zone and 1 from GMC. Still reading low, added Lucas Oil stabilizer still reading low, did go up some with Lucas. Runs great, just w...

    2004 Chevrolet Suburban 1500 Z71 4WD

    -

    Maintenance & Repair

  • 07 Suburban (5.3) radical fluctuation in oil pressure 1 answer

    Oil pressure will fluctuate rapidly between 20 psi and 60 psi. Needle will fall to near zero triggering the message center warning system to shut engine down immediately do to low oil pressure. Is...

    2007 Chevrolet Suburban LT1 1500 4WD

    -

    Maintenance & Repair

  • Oil pressure 4 answers

    On my 2008 suburban 5.3 flex fuel, I had an issue with low oil pressure and after changing filter and oil pressure went back to normal. Now I have 450 miles since change and pressure is slowly dropp...

    2008 Chevrolet Suburban LTZ 1500 4WD

    -

    General

Search Chevrolet Suburban Questions

Chevrolet Suburban Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 950
#2 Eric Fritz
Eric Fritz
Reputation 860
#3 Neal Turner
Neal Turner
Reputation 830
View All

Related Models For Sale

Used GMC Yukon XL
263 Great Deals out of 12,162 listings starting at $1,999
Used Chevrolet Tahoe
575 Great Deals out of 27,582 listings starting at $1,500
Used GMC Yukon
348 Great Deals out of 17,289 listings starting at $2,500
Used Ford Expedition
394 Great Deals out of 25,340 listings starting at $1,750
Used Cadillac Escalade ESV
115 Great Deals out of 5,807 listings starting at $3,500
Used Chevrolet Silverado 1500
1,752 Great Deals out of 170,135 listings starting at $1,800
Used Cadillac Escalade
226 Great Deals out of 11,031 listings starting at $3,000
Used Chevrolet Silverado 2500HD
305 Great Deals out of 26,958 listings starting at $1,250
Used Ford F-150
2,245 Great Deals out of 209,704 listings starting at $1,499
Used Toyota Sequoia
142 Great Deals out of 5,759 listings starting at $2,195
Used Lincoln Navigator
111 Great Deals out of 5,845 listings starting at $1,499
Used Nissan Armada
121 Great Deals out of 8,996 listings starting at $2,500
Used Dodge Durango
266 Great Deals out of 23,164 listings starting at $1,500

Used Cars For Sale

2017 Chevrolet Suburban LS 1500 For Sale
481 listings starting at $39,501
2016 Chevrolet Suburban LS 1500 For Sale
72 listings starting at $36,900
2015 Chevrolet Suburban LS 1500 For Sale
27 listings starting at $32,268
2014 Chevrolet Suburban LS 1500 For Sale
7 listings starting at $27,900