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Thanks for your help on this ! I apricate the patience

Ok Thanks I checked that yesterday and found no issue and no shorts, but i will try to track it down a little more, is there a common ground to these? Also I am getting not short fuel trim on bank 2 sensor 2 on my reader; so another words flat lined so no reading what could cause this. Thanks again. and do you have wiring diagram of the 02 sensor layout? Also I am getting good voltage according to my reader on bank 2 sensor 1&2 I also forgot I have snapon 12/24v test light and power probe will this help?

I have changed all coil packs, plugs and wires. and Oxygen sensors also the 02's were aftermarket and not OEM what could be my issues with all these codes (not to Worried about Oil Pressure switch) all wiring to 02 sensor including voltage seems to be good . Thanks in advance for any or all help. Car Scanner ELM OBD2 DTC report Selected brand: Chevrolet VIN: 3GNTKFE79DG292059 ============1============== P0050 Raw code: 0050 ECU: Engine control unit Status: Confirmed OBDII: Heated oxygen sensor (HO2S) 1, bank 2, heater control - circuit malfunction ============2============== P0056 Raw code: 0056 ECU: Engine control unit Status: Confirmed OBDII: Heated oxygen sensor (HO2S) 2, bank 2, heater control - circuit malfunction ============3============== P0155 Raw code: 0155 ECU: Engine control unit Status: Confirmed OBDII: Heated oxygen sensor (HO2S) 1, bank 2, heater control - circuit malfunction ============4============== P0157 Raw code: 0157 ECU: Engine control unit Status: Confirmed OBDII: Heated oxygen sensor (HO2S) 2, bank 2 - low voltage ============5============== P0161 Raw code: 0161 ECU: Engine control unit Status: Confirmed OBDII: Heated oxygen sensor (HO2S) 2, bank 2, heater control - circuit malfunction ============6============== P0521 Raw code: 0521 ECU: Engine control unit Status: Confirmed OBDII: Engine oil pressure sensor/switch - range/performance problem ============7============== P0151 Raw code: 0151 ECU: Engine control unit Status: Pending OBDII: Heated oxygen sensor (HO2S) 1, bank 2 - low voltage ============8============== P015D Raw code: 015D ECU: Engine control unit[Archive (inactive)] Status: Permanent OBDII: Heated oxygen sensor (HO2S) 1, bank 2 - delayed response lean to rich ============9============== P0174 Raw code: 0174 ECU: Engine control unit[Archive (inactive)] Status: Permanent OBDII: System too lean, bank 2 ============10============== P0050 Raw code: 0050 ECU: Engine control unit Status: DTC supported by calibration, Current DTC, Test failed since DTC cleared, History DTC, Current DTC since power up, Warning Indicator Requested OBDII: Heated oxygen sensor (HO2S) 1, bank 2, heater control - circuit malfunction General Electrical Failures [0x00] ============11============== P0056 Raw code: 0056 ECU: Engine control unit Status: DTC supported by calibration, Current DTC, Test failed since DTC cleared, History DTC, Test not passed since current power up, Current DTC since power up, Warning Indicator Requested OBDII: Heated oxygen sensor (HO2S) 2, bank 2, heater control - circuit malfunction General Electrical Failures [0x00] ============12============== P0155 Raw code: 0155 ECU: Engine control unit Status: DTC supported by calibration, Current DTC, Test failed since DTC cleared, History DTC, Test not passed since current power up, Current DTC since power up, Warning Indicator Requested OBDII: Heated oxygen sensor (HO2S) 1, bank 2, heater control - circuit malfunction General Electrical Failures [0x00] ============13============== P0157 Raw code: 0157 ECU: Engine control unit Status: DTC supported by calibration, Current DTC, Test failed since DTC cleared, History DTC, Current DTC since power up, Warning Indicator Requested OBDII: Heated oxygen sensor (HO2S) 2, bank 2 - low voltage General Electrical Failures [0x00] ============14============== P0161 Raw code: 0161 ECU: Engine control unit Status: DTC supported by calibration, Current DTC, Test not passed since DTC cleared, Test failed since DTC cleared, History DTC, Test not passed since current power up, Current DTC since power up, Warning Indicator Requested OBDII: Heated oxygen sensor (HO2S) 2, bank 2, heater control - circuit malfunction General Electrical Failures [0x00] ============15============== P0521 Raw code: 0521 ECU: Engine control unit Status: DTC supported by calibration, Test failed since DTC cleared, History DTC, Current DTC since power up, Warning Indicator Requested OBDII: Engine oil pressure sensor/switch - range/performance problem General Electrical Failures [0x00] ============16============== P0151 Raw code: 0151 ECU: Engine control unit Status: DTC supported by calibration, Test failed since DTC cleared OBDII: Heated oxygen sensor (HO2S) 1, bank 2 - low voltage General Electrical Failures [0x00]