GMC Envoy II (2001-2009) Base radio circuit, with rear seat audio

ANTENNA AUXILIARY HVAC CONTROL MODULE (UNDER LOWER BARE BARE DRAIN WIRE BLK WIRE BLK/WHT WIRE BRN WIRE BRN/WHT WIRE CONSOLE) DIGITAL RADIO ANTENNA DIGITAL RADIO RECEIVER DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE ENGINE CONTROLS SYSTEM GROUND GROUND RADIO ON SIG GRY WIRE HOT AT ALL TIMES HVAC-B FUSE 36 L AUD SIG + R AUD SIG + LF OUT LR LOW LEVEL AUDIO SIG + LR OUT LR SPEAKER OUT - LT BLU LT BLU WIRE LT BLU WIRE LT GRN WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM R AUD SIG + L AUD SIG + RADIO ON SIG REMOTE OUT - REMOTE L SIG RADIO RADIO FUSE 41 REAR FUSE BLOCK (BELOW LEFT REAR SEAT) REMOTE L SIG REMOTE OUT - RF OUT RR LOW LEVEL AUDIO SIG + RR OUT RR OUT + GROUND RR SPEAKER OUT + SERIAL DATA TAN WIRE VEHICLE COMMUNICATION INTERFACE MODULE (UNDER RIGHT REAR SEAT) VSS YEL WIRE

BODY CONTROL MODULE (BENEATH LEFT REAR SEAT, ON REAR FUSE BLOCK) BRN WIRE DK BLU WIRE DK GRN WIRE GRY WIRE INFLATABLE RESTRAINT STEERING WHEEL MODULE COIL LEFT FRONT DOOR SPEAKER LEFT FRONT DOOR SPEAKER ASSEMBLY LEFT FRONT DOOR TWEETER SPEAKER LEFT REAR DOOR SPEAKER LT BLU WIRE LT GRN WIRE PNK WIRE RADIO CONTROL SIGNAL RIGHT FRONT DOOR SPEAKER RIGHT FRONT DOOR SPEAKER ASSEMBLY RIGHT FRONT DOOR TWEETER SPEAKER RIGHT REAR DOOR SPEAKER SEEK DOWN SEEK PROG SEEK UP SEEK VOICE SERIAL DATA SOURCE DOWN SOURCE UP STEERING WHEEL) SUPPLY VOLTAGE TAN WIRE UPPER LEFT STEERING WHEEL CONTROL SWITCH ASSEMBLY UPPER RIGHT STEERING WHEEL CONTROL SWITCH ASSEMBLY VOLUME DOWN VOLUME UP WHT WIRE WIPER/ WASHER SYSTEM YEL WIRE