American Motors: O2 Sensor, buick cadillac, american motors corporation

Question
check engine light on, parts store received code, advised me that the O2 sensor heater circuit malfunction left bank 1 sensor d, do you know where this is located and how easy to change, 2002 checvy impala V6 3400

Answer
The catagory I vollenteer for is American Motors. That includes vehicles manufactured by American Motors Corporation prior to 1980. I do not have experience with Chevrolets, which are manufactured by General Motors. Please submit your quetion to a Chevrolet expert, or even a Buick, Cadillac, Oldsmobile, or Pontiac expert should be helpful.
Kevin