GMC Repair: 01 Sonoma ODTC P1137, odtc, oxygen sensor

Question
My '01 Sonoma has a 'Service Engine Soon' light with a P1137 stored code.  Where is the Heated Oxygen Sensor Bank 1 Sensor 2?  

Answer
Hi
Bank 1 sensor 2 is located on the LEFT (DRIVERS) Side exhaust pipe AFTER the converter IF YOU HAVE A V-6.
If you have the 2.2L 4 cyl it is located AFTER the Converter.
If you have V-6 Check the wires going TO the sensor  around the firewall area. On that truck they were prone to have wire issues in that area.
JUST advise from experience.
Hope it helps
Good Luck
Paul