Let me guess, the replacement was a bosch sensor...? If you do end up replacing the sensor, do yourself a favor and pick up a genuine AC Delco sensor. Either buy it online or if you have an AC Delco retailer in your area, go that route. I have witnessed first hand the lower activity of brand new Bosch direct replacement and universal O2 sensors. Lower activity directly relates to a shorter life span.

You can go to ACDelco.com and type in your zip code to see if you have a retail store close by.

 

Drove it for a about ten minutes today, no SES yet but still stinks of fuel outside the truck...will drive it some more, the SES is bound to come on sooner or later...

 

SES on. DTC CODES p0151, DTC PENDING P0151, P0174. The codes did infact follow the sensor. Time to warranty it out and see if a new one fixes my issues.

 

Well there ya go. What brand of sensor was it?

 

bosch. running fine now, about 7 miles and no code. will drive her more tomorrow.

 

Well, if you find that it starts to fail again, I wouldn't warranty it again. Rich conditions will kill a catalytic converter quick. The AC Delco sensors aren't all that much more expensive and are hands down better in these trucks.