Chevrolet Repair: o2 sensor location, gmc suburban, sensor location

Question
Where is the bank1, sensor 1, o2 sensor located on a '96 K2500 GMC Suburban with a 7.4L engine?

Answer
Bank one is always on the same side as the #1 cylinder which is the left side (drivers side. Sensor 1 is the first sensor coming from the engine. Sensor 2 is downstream a little further on the exhaust.

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