o2 sensors

Asked by blaccjacc21 Aug 05, 2016 at 09:46 PM about the 2003 Chevrolet Blazer

Question type: Maintenance & Repair

How many o2 sensors do my 03 blazer have and
where are they located?

3 Answers
24,965

Mark answered 7 years ago

There are 3 O2 sensors on the '03' Chevy Blazer. 2 upstream of the CAT and 1 downstream of the CAT (Which is the easiest to find). The two upstream are the "bank 1" (driver side) and "bank 2" (passenger side) Sensors. They are a little more difficult to locate but if you trace the exhaust manifolds off each side of the engine, you will see them tucked up in there between the wheel well.

9 people found this helpful.
Mark helpful

Your Answer:

Related Questions

  • o2 sensors 3 Answers

    How many o2 sensors do my 03 blazer have and where are they located?

    2003 Chevrolet Blazer

    -

    Maintenance & Repair

  • O2 sensors 1 Answer

    Part name for the 4 o2 sensors

    2003 Chevrolet Silverado 1500 LS RWD

    -

    Maintenance & Repair

  • O2 sensors 2 Answers

    Information on when to replace O2 sensors

    2006 Chevrolet Impala 3.5L LT FWD

    -

    Maintenance & Repair

  • o2 sensors 1 Answer

    what is a good voltage O2 sensors should be spitting out

    2005 Chevrolet Silverado 1500 RWD

    -

    Maintenance & Repair

  • o2 sensors on a 1999 chev s10 2 Answers

    location of the o2 sensors

    1999 Chevrolet S-10 LS Wide Stance Extended Cab 4WD

    -

    Maintenance & Repair

Blazer

Looking for a Used Blazer in your area?

CarGurus has 1,055 nationwide Blazer listings starting at $5,995.

Postal Code:

Shortcuts

Search Chevrolet Blazer Questions

CarGurus Experts

  • #1
    Andrew Olsen
    Reputation
    4,240
  • #2
    Rowefast
    Reputation
    3,540
  • #3
    yetilikesbeer
    Reputation
    2,410
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Chevrolet Trailblazer
17 Great Deals out of 1,345 listings starting at $18,995
Used Chevrolet Silverado 1500
169 Great Deals out of 7,405 listings starting at $6,995
Used Chevrolet Tahoe
16 Great Deals out of 773 listings starting at $7,499
Used Jeep Grand Cherokee
130 Great Deals out of 3,647 listings starting at $5,555
Used Ford Explorer
56 Great Deals out of 1,880 listings starting at $6,990
Used Toyota RAV4
149 Great Deals out of 3,015 listings starting at $4,999
Used Chevrolet Colorado
40 Great Deals out of 1,142 listings starting at $4,995
Used Toyota 4Runner
27 Great Deals out of 537 listings starting at $14,791

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.