Chevrolet Blazer III (2018-2023) Radio circuit, low level

1-CU 2-CU 2.0L TURBO 3.6L 2.5L AM/FM BATT POST VOLTAGE BATTERY POS VOLT BK COAX BK USB USB SERIAL DATA BLK WIRE BLK/WHT WIRE COAX COAX BU COAX CU COAX OG COAX OG REAR VISION CAMERA COAXIAL VIDEO SIGNAL COMPUTER DATA LINES SYSTEM CRNKSHAFT POSI SENS REPLICATED SIGNAL DISPLAY DISPLAY SIG + ENGINE CONTROL MODULE ETHERNET BUS 4 (-) GRN/BLK WIRE GRY WIRE GRY/GRN WIRE GRY/WHT WIRE HD/XM HOT AT ALL TIMES INFO DISPLAY MODULE INFOTAINMENT INSTRUMENT PANEL FUSE BLOCK LEFT OF BATTERY) LO SPD GMLAN SER DATA 2 LOGIC LOW SPD GMLAN LR SPEAKER SIG (-) LVDS LVDS GY INFOTAINMENT DISPLAY SIGNAL NCA WIRE POWER SUPPLY TRANSFORMER RADIO RADIO ANTENNA AMPLIFIER RADIO CONTROLS REAR END SPOILER ANTENNA REAR VIEW CAMERA RED/BLU WIRE RED/GRN WIRE RED/GRY WIRE RED/VIO WIRE ROOF REAR ANTENNA SERIAL DATA 2 SIG GROUND SIGNAL GROUND UNDERHOOD FUSE BLOCK USB VIO/BLU WIRE W/ DIGITAL AUDIO SYSTEM W/O DIGITAL AUDIO SYSTEM

BLK WIRE BLK/BLU WIRE BLK/RED WIRE BLU WIRE BLU/BLK WIRE BLU/RED WIRE BRN/BLU WIRE GRN WIRE GRN/BLK WIRE GRN/RED WIRE GRY WIRE LEFT LEFT FRONT DOOR SPEAKER LEFT INSTRUMENT PANEL SPEAKER LEFT REAR DOOR SPEAKER LOGIC MUTE ORG/RED WIRE PNK WIRE POWER DISTRIBUTION SYSTEM RADIO PRESETS STEERING WHEEL CONTROLS SWITCH RADIO VOLUME STEERING WHEEL CONTROLS SWITCH RED/GRN WIRE RED/VIO WIRE RED/WHT WIRE RIGHT RIGHT FRONT DOOR SPEAKER RIGHT INSTRUMENT PANEL SPEAKER RIGHT REAR DOOR SPEAKER RIGHT STEERING WHEEL CONTROLS SWITCH LOGIC SELECT STEERING WHEEL AIR BAG COIL USB USB RECEPTACLE VOICE VOL DOWN VOL UP WHT WIRE YEL WIRE YEL/BLK WIRE

AUDIO LOW REF AUDIO SIG + AUDIO SIG MICROPHONE SIG BATTERY POS VOLT BLK/BRN WIRE BLK/GRY WIRE BLK/WHT WIRE BLU WIRE BLU/BLK WIRE BLU/GRN WIRE BLU/YEL WIRE BRN/BLU WIRE BUS 12 COMPUTER DATA LINES SYSTEM DRIVER INFORMATION CENTER DISPLAY GRN WIRE GRN/BLK WIRE GRN/BRN WIRE GRY/BLU WIRE GRY/BRN WIRE GRY/GRN WIRE GRY/YEL WIRE HIGH SPD GMLAN SERIAL DATA (+) 9 HOT AT ALL TIMES INSTRUMENT CLUSTER INSTRUMENT PANEL FUSE BLOCK LEFT FRONT MOBILE TELEPHONE MICROPHONE LEFT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LEFT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE LF SPEAKER (-) CTRL 1 LF SPEAKER SIG (-) 1 LIN SERIAL DATA LOGIC LOW REF LOW SPD GMLAN LR SPEAKER (+) CTRL MICROPHONE (-) LOW REF MICROPHONE SIG NCA WIRE RADIO RED/GRN WIRE RED/WHT WIRE RF SPEAKER (-) CTRL 1 RF SPEAKER SIG (-) 1 RIGHT FRONT RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RIGHT REAR RADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE RR SPEAKER (+) CTRL RR SPEAKER SIG (-) RTN NOISE REDUCTION MICROPHONE 4 NOISE REDUCTION MICROPHONE 4 SIG SERIAL DATA 2 SIGNAL SIGNAL GROUND TELEMATICS COMMUNICATION INTERFACE CONTROL MODULE VIO/BLU WIRE W/ ONSTAR W/O ONSTAR WHT WIRE WHT/GRN WIRE YEL WIRE YEL/BLK WIRE