Using a code reader, my truck (03 S-10 Crew Cab, 4.3l V6) was found to have a 'faulty' O2 sensor (the code reader said it was Bank 2 Sensor #1). Looking thru the archives, I saw a bunch of different posts about the cost of these sensors and when looking on AutoZone.com, I found that the price varied significantly. Was Autozone.com correct w/ the price being around $120 while the $30 price (?) I saw in the archive for a different O2 sensor? I seem to recall in my 97 S-10 (4.3l V6) that it was around the same price (I don't recall which sensor failed).
Thanks in advance for your help, Steve (in Mars, PA)