2002 Trailblazer 4.2L oil pressure drops randomly

130

Asked by Jul 23, 2017 at 09:55 AM about the 2002 Chevrolet TrailBlazer LS

Question type: Maintenance & Repair

I did an oil change on this truck and after that, the oil pressure would randomly drop off.  I have connected a mechanical guage to verify.  I have changed the oil pump & pickup tube.  I recall when first draining the oil, there was much more than 7 quarts.  I did not think to measure the quantity, but I have changed enough oil in 25 years to recognise the time required to drain.  So I thought perhaps someone knew oil was not returning to the oil pan quickly enough.  So I have 10 quarts in it now.  

I am at a loss and am not sure where to go from here.  I am not familiar with this particular engine but have done work on many, many engines over the last 25 years.  This has me baffled.  Any help would be appreciated.

Thank you.

No answers yet

Your Answer

Add photo

Related Questions

  • 2002 Trailblazer 4.2L oil pressure drops randomly

    I did an oil change on this truck and after that, the oil pressure would randomly drop off. I have connected a mechanical guage to verify. I have changed the oil pump & pickup tube. I recall when f...

    2002 Chevrolet TrailBlazer LS

    -

    Maintenance & Repair

  • 2008 Trailblazer oil pressure guage at zero but driving fine? 2 answers

    I have a 2008 Chevrolet Trailblazer LTZ 5.3L V8 140,000 km. Two days ago when I started the car and began driving, I noticed the “Check Gauges” light had come on and the oil pressure gauge needle wa...

    2008 Chevrolet TrailBlazer LT3 4WD

    -

    Maintenance & Repair

  • Oil pressure 1 answer

    I have a 2002 Chevy trailblazer. The transmission shop rebuilt the transmission and when i got it back the oil pressure keeps going from 0 to 440.They changed oil, oil filter and sensor, and it's ...

    2002 Chevrolet TrailBlazer

    -

    Maintenance & Repair

  • 2002 chevy trailblazer 4wd ltz 5 answers

    hi i just put a used tranny on my trailblazer but it wont shift out of first gear could it be the shift solenoids that are stuck on it or u have any other suggestions

    2002 Chevrolet TrailBlazer LTZ 4WD

    -

    Maintenance & Repair

  • 2002 Chevy Trailblazer 1 answer

    Can I put a 2005 4200 motor into my 2002. And will I have to change anything?

    2002 Chevrolet TrailBlazer

    -

    Maintenance & Repair

Search Chevrolet TrailBlazer Questions

Chevrolet TrailBlazer Experts

#1 bigdogracer
bigdogracer
Reputation 870
#2 Tom Demyan
Tom Demyan
Reputation 850
#3 tennisshoes
tennisshoes
Reputation 660
View All

Related Models For Sale

Used Chevrolet Tahoe
7 Great Deals out of 623 listings starting at $6,871
Used Jeep Grand Cherokee
101 Great Deals out of 2,774 listings starting at $1,871
Used GMC Envoy
4 Great Deals out of 38 listings starting at $2,995
Used Chevrolet Silverado 1500
157 Great Deals out of 10,457 listings starting at $100
Used Ford Explorer
48 Great Deals out of 1,374 listings starting at $3,395
Used Chevrolet Impala
54 Great Deals out of 924 listings starting at $1,900
Used Chevrolet Camaro
782 listings starting at $13,040
Used Dodge Durango
63 Great Deals out of 1,032 listings starting at $2,998
Used Chevrolet Blazer
16 listings starting at $1,750
Used GMC Yukon
19 Great Deals out of 841 listings starting at $5,950
Used Ford F-150
435 Great Deals out of 9,117 listings starting at $922

Used Cars For Sale

2009 Chevrolet TrailBlazer For Sale
4 listings starting at $4,500
2008 Chevrolet TrailBlazer For Sale
9 listings starting at $3,500
2007 Chevrolet TrailBlazer For Sale
7 listings starting at $6,995
2006 Chevrolet TrailBlazer For Sale
4 listings starting at $1,455
2005 Chevrolet TrailBlazer For Sale
7 listings starting at $700

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.