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P0030 GMC -

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o2 sensor bank 1 sensor 1. sitting in the seat what side is number1

Vehicle: 2006 gmc sierra 5.3

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P0030 H20S heater control circuit Bank 1 Sensor 1

P0053 H20S heater resistance Bank 1 Sensor 1

Bank1 is is where cylinder number 1 is located, the opposite side is Bank 2, or where the number 2 cylinder. Being sensor 1 this make it a upstream sensor or the engine management sensor.

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