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Discussion Starter · #1 ·
Ive read that theres new improved 02 sensors that GM is using.
Im at 126,800 miles on my 2003 Trailblazer... I have no CEL.
But between now and Dec. Im planning on changing a few parts (due to age and not failure--- preventive maintenance I guess) before I take a long trip....
Im currently getting 18-19 mpg in combined mileage.
I looked up the part # on the AC-Delco web site and came up with 213-2915.
Ive seen other post for o2 sensors for newer Trailblazers where theres a bunch of part numbers..... (maybe they can use the older part and new improved part).....

Can anyone use their Dealer parts counter computer to see what GM/dealer shows for the replacement O2 sensor?

Maybe the improved design isnt available for my model year...
Thanks.
 

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Discussion Starter · #2 ·
stopped by an AC delco parts wharehouse.
Had them look up the part. THen I compared the part # they had with what I had...
they didnt match. he asked where I got that part #, I said the AC-D website.
he says his system was showing 4 sensors. 2 front, 2 rear.
He said he doesnt even carry the part # I had....
the # he had was 213-1551...
HELP??!!
 
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