i have a 2006 trailblazer 5.3L and the oil pressure gauge reads about 45 psi but the oil light is on. have fresh oil change , why is the light on?

Asked by Sep 07, 2017 at 09:26 AM about the 2006 Chevrolet TrailBlazer LS 4WD

Question type: Maintenance & Repair

I replaced a faulty oil sensor 2 months ago. I have lifter noise when I first start
until it warms up. The engine has 135,000 mile and I just oil changed the
engine after my oil light came on. The oil level was normal so I changed the oil
and filter and the oil light still on but gauges read 40-45 at idle. What do you
think is going on?

4 Answers

101,925

If you have lifter noise then you don't have oil pressure. Seems like there is a high failure rate on these pumps.

I understand these engines with high miles have a tendency to have noisy lifters at start up and quiet up as the engine warms. This is what i'm been experiencing for over a year but never had the oil light stay on and still have a normal oil pressure reading, proper oil level and clean 5w-30 oil. If i had a bad oil pump i would think my oil gauge would read low and check engine light go on and eventually i should hear a knocking in the engine which i do not. So i dont think its a bad oil pump.

101,925

The only way to know for sure is to hookup a manual oil gauge and compare the two readings. If you get a bouncing needle on the manual gauge it is indicating something is going wrong, possible pickup tube and or screen, pump early stages of failure.

1 of 1 people found this helpful.

yes good idea. That will be my first check.

Your Answer

TrailBlazer

Looking for a Used TrailBlazer in your area?

CarGurus has 46 nationwide TrailBlazer listings starting at $3,495.

Postal Code:

Chevrolet TrailBlazer Experts

  • #1
    bigdogracer
    Reputation
    910
  • #2
    Tom Demyan
    Reputation
    890
  • #3
    tennisshoes
    Reputation
    700
View All

Related Models For Sale

Used Chevrolet Tahoe
5 Great Deals out of 738 listings starting at $899
Used Jeep Grand Cherokee
112 Great Deals out of 3,023 listings starting at $3,500
Used GMC Envoy
4 Great Deals out of 34 listings starting at $2,495
Used Chevrolet Silverado 1500
199 Great Deals out of 10,713 listings starting at $1,700
Used Dodge Charger
62 Great Deals out of 762 listings starting at $2,000
Used Ford Explorer
50 Great Deals out of 1,448 listings starting at $2,995
Used Chevrolet Impala
145 Great Deals out of 1,044 listings starting at $1,200
Used Chevrolet TrailBlazer EXT
7 listings starting at $6,495
Used Chevrolet Equinox
113 Great Deals out of 5,464 listings starting at $1,400
Used Dodge Durango
102 Great Deals out of 1,072 listings starting at $1,888
Used GMC Yukon
20 Great Deals out of 976 listings starting at $5,500
Used Ford F-150
502 Great Deals out of 10,105 listings starting at $1,800

Used Cars For Sale

2007 Chevrolet TrailBlazer LS 4WD For Sale
4 listings starting at $4,300

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.