Low oil pressure, knocking, stalling

Asked by DemonandAngels Dec 14, 2019 at 09:59 PM about the 2006 Chevrolet Trailblazer LT 4WD

Question type: Maintenance & Repair

So I have an '06 Chevy Trailblazer.  It's V6 4.2 Liter.  
Plugs, wires and air filter changed every oil
change.  Recently we took a trip, was going about
80 on the interstate. It was fine getting there
however upon heading home and accelerating
back onto the interstate oil pressure dropped
suddenly, light came on as well as one telling us to
turn off the engine.  We did so, let it sit for about
15 minutes, it started again.  However every time
we slowed or came to a stop we had to turn it off
again and let it sit for about 10-15 minutes.  

We got it to a friend's checked the oil, it was low
but there wasn't any leaking.  Changed the oil and
oil filter but noticed a very noticeable knocking
sound and every time we went to accelerate the
vehicle would start acting like it wanted to stall.  
It's now sat in our drive way for about 2 months.  It
fires up just fine and idles great for about 15
minutes but upon stepping on the gas or revving
the engine it begins acting like it wants to stall.  
The knock is still there.

I need opinions, I've had a few friends and
mechanics saw it needs lower engine work and
I've had a few friends and mechanics saw its a
clogged converter.  

1 Answer

97,495

A clogged exhaust won't cause engine knock. I suspect that the oil loss, or loss of oil pressure you experienced damaged rod & main bearings. You could just get a short block or you might be able to rebuild yours. The truck's new enough that there's value in whichever you choose.

1 people found this helpful.

Your Answer:

Chevrolet Trailblazer Experts

  • #1
    FJ4072
    Reputation
    3,100
  • #2
    G A Arne
    Reputation
    1,990
  • #3
    bigdogracer
    Reputation
    1,960
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Tahoe
17 Great Deals out of 721 listings starting at $6,871
Used Chevrolet Blazer
3 Great Deals out of 1,157 listings starting at $4,790
Used Jeep Grand Cherokee
102 Great Deals out of 4,769 listings starting at $1,938
Used Chevrolet Silverado 1500
106 Great Deals out of 10,264 listings starting at $3,655
Used GMC Envoy
19 listings starting at $5,995
Used Ford Explorer
42 Great Deals out of 2,872 listings starting at $3,999
Used Chevrolet Impala
16 Great Deals out of 944 listings starting at $2,495
Used Chevrolet Equinox
65 Great Deals out of 5,523 listings starting at $1,800
Used Dodge Charger
36 Great Deals out of 776 listings starting at $2,995
Used GMC Yukon
23 Great Deals out of 934 listings starting at $5,995
Used Ford F-150
196 Great Deals out of 12,227 listings starting at $521
Used Dodge Durango
41 Great Deals out of 930 listings starting at $5,995

Used Cars For Sale

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. Content will be removed if CarGurus becomes aware that it violates our policies.