02 sensor for 2002 blazer

Last post on Oct 01, 2008 at 5:38 AM

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#1 of 1 02 sensor for 2002 blazer by hegarty Oct 01, 2008 (5:38 am)
Anyone know how many 02 sensors I should have? I can only find 3 but the guy at the parts store says I should have 4. My check engine light is on when they checked it the guy told me it the bank one sensor 2 that needs replaced. I have replaced 2 02 sensors already but they were on the passenger side which I think would be bank 2?