any ever get parts from this place: PT AUTO WAREHOUSE
just wondering cause I got a O2 sensor (downstream) for my 2010 LT 2.2L HHR. Got it off ebay for $18.15 w/free shipping.

 

Nope, but it's not so much as where you got the part or the price as is it the correct part?

Like this


http://m.ebay.com/itm/234-4066-Oxygen-Sensor-Downstream-For-2006-2010-Chevrolet-Cobalt-HHR-/371470141467?nav=SEARCH

 

Why would replace the #2 O2 sensor?

If you are getting a cat code that means it is working.

 

OLDBLUE, it looks just like the one you posted. part number from PT AUTO WAREHOUSE is:
O2S-A5897. I think i wanted to replace it donbrew cause i did the #1upstream sensor. no cat code. just have codes for lean and rich. not at same time but its one of them.

 

#2 sensor has NOTHING to do with A/F.

Spend your money if you wish.