Oil pressure gage drops to zero

Asked by Sep 08, 2016 at 11:40 PM about the 1999 GMC Suburban K1500 SLE 4WD

Question type: Maintenance & Repair

My oil pressure gauge drops to zero and
comes back up and it constantly drops to
zero but it is full of oil. It's a 1999 gmc
suburban. Any ideas of what it could be is
greatly appreciated

2 Answers

51,755

When this happens it is always a piece of mind to have the oil pressure checked with a mechanical gauge. But if the motor is not knocking or ticking when your oil pressure drops, then there is more than likely a problem with the oil pressure sending unit, (the opsu needing to be replaced, and check the opening it is screwed into, may be plugged up), or the gauge on the dash, (not likely tho)

Yeah it don't make any noises or knocks or anything when the oil pressure drops. I'll check the oil pressure sending unit. Thank you for the response

Your Answer

Add photo

Related Questions

Search GMC Suburban Questions

GMC Suburban Experts

#1 LouB
LouB
Reputation 1,290
#2 Larry Thibert
Larry Thibert
Reputation 190
#3 ShadetreeMech
ShadetreeMech
Reputation 160
View All

Related Models For Sale

Used Chevrolet Suburban
459 Great Deals out of 18,780 listings starting at $1,399
Used GMC Yukon XL
360 Great Deals out of 12,479 listings starting at $1,995
Used GMC Yukon
518 Great Deals out of 17,126 listings starting at $1,799
Used Chevrolet Tahoe
772 Great Deals out of 28,452 listings starting at $1,500
Used Ford Expedition
414 Great Deals out of 24,740 listings starting at $1,999
Used GMC Sierra 1500
939 Great Deals out of 62,274 listings starting at $1,395
Used Cadillac Escalade
306 Great Deals out of 10,693 listings starting at $1,900
Used Chevrolet Silverado 1500
2,290 Great Deals out of 155,163 listings starting at $1,395
Used Ford Explorer
936 Great Deals out of 73,995 listings starting at $750
Used Ford Excursion
16 Great Deals out of 791 listings starting at $1,900
Used Ford F-150
2,690 Great Deals out of 212,354 listings starting at $1,000
Used Dodge Durango
299 Great Deals out of 24,115 listings starting at $1,500
Used Lincoln Navigator
116 Great Deals out of 5,623 listings starting at $1,299

Used Cars For Sale

1999 GMC Suburban K1500 SLE 4WD For Sale
4 listings starting at $2,395