I have an oxygen sensor (Bank 1, upstream

) that I've given up on trying to replace. I asked my local dealer to install the sensor for me while I had my SVT there for other work, but all they did was bullsh!t me about my car having multiple trouble codes (I have P1131 but nothing else, as I verified on my scan tool the very morning I took the car in) and ultimately refuse to install the part. Fine.
So the question is, can anyone recommend an independent shop near the Med Center or the Galleria? Or have any of you successfully replaced HO2S11?
TIA...