GMC Sierra III (2013-2015) underhood fuse block (left side of engine compt) Wiring diagrams

BATTERY CURRENT SENSOR BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE CHARGE IND SIG CHARGE LOW INDICATOR SPEED GM LAN SERIAL DATA LOGIC COMPUTER DATA LINES SYSTEM CURRENT SPLY DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) GENERATOR B+ GENERATOR SIG GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 LOW REF MEGA FUSE NEAR FAN SHROUD) PNK WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY RED WIRE RED/WHT WIRE RIGHT BATTERY SENS SIG SERIAL DATA TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE HOLDER (ON POSITIVE BATTERY TERMINAL) VOLT W/ 10 SERIES WHT WIRE

BATTERY CURRENT SENSOR BLK WIRE BODY CONTROL MODULE (BCM) (LOWER LEFT SIDE OF DASH) BRN WIRE CHARGE IND SIG CHARGE LOW INDICATOR SPEED GM LAN SERIAL DATA LOGIC COMPUTER DATA LINES SYSTEM CURRENT SPLY DK GRN WIRE DRIVER INFORMATION CENTER (DIC) ENGINE CONTROL MODULE (ECM) (LEFT FRONT OF ENGINE COMPT) GENERATOR B+ GENERATOR SIG GRY WIRE HOT AT ALL TIMES INSTRUMENT PANEL CLUSTER (IPC) IPC FUSE 46 LOW REF MEGA FUSE NEAR FAN SHROUD) PNK WIRE POWER DISTRIBUTION SYSTEM POWER SUPPLY RED WIRE RED/WHT WIRE RIGHT BATTERY SENS SIG SERIAL DATA TAN/BLK WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) UNDERHOOD FUSE HOLDER (ON POSITIVE BATTERY TERMINAL) VOLT W/ 10 SERIES WHT WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 CUSHION, BACK HEAT 1 2 3 4 5 6 7 8 B+ GROUND 13 14 15 16 17 PPL BACK HEAT BLK WIRE BLU WIRE BREAKOUT) BRN WIRE COMPUTER DATA LINES SYSTEM CUSHION TEMP SEAT BACK TEMP BACK HEAT DK BLU WIRE DK GRN WIRE DRIVER BACK HEATED SEAT ELEMENT (IN DRIVER'S SEAT BACK) DRIVER CUSHION HEATED SEAT ELEMENT (IN DRIVER'S SEAT CUSHION) EXCEPT 6.6L 6.6L FUSE 37 FUSE 34 GRN WIRE GRY WIRE HEATED SEAT CONTROL MODULE HOT AT ALL TIMES LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOW HEAT IND HIGH HEAT IND LOW HEAT IND HIGH HEAT IND LOW SPEED GMLAN LT BLU WIRE LT GRN WIRE MEDIUM HEAT IND BACK, CUSHION HEAT IND NCA WIRE PASSENGER BACK HEATED SEAT ELEMENT (IN PASSENGER'S SEAT BACK) PNK DK PPL WIRE PNK LOW REF LOW REF LOW REF LOW REF WIRE PNK WIRE POWER DISTRIBUTION SYSTEM PPL RED/WHT WIRE TAN WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT/BLK WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 340 201 200 5149 655 5152 514 B+ LF SPK+ RF SPK+ VOICE SIG/ 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 367 368 L AUD+ R AUD+ 116 115 659 LR AUD- RR AUD- LOW REF 199 46 658 LR AUD+ RR AUD+ VOICE SIG 372 388 1573 L AUD- R AUD- DRAIN WIRE ANTENNA AUD SIG BLK WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CELLULAR TELEPHONE MICROPHONE (IN OVERHEAD CONSOLE) CELLULAR/ NAVIGATION ANTENNA CELLULAR/ NAVIGATION, DIGITAL RADIO RADIO ANTENNA CELLULAR/NAVIGATION, DIGITAL RADIO ANTENNA (LEFT FRONT OF ROOF) COAX COAX BK COAX COAX COMPUTER DATA LINES SYSTEM DIGITAL AUDIO SYSTEM W/ S-BAND, TRAFFIC DIGITAL AUDIO SYSTEM DIGITAL RADIO RECEIVER (BEHIND RIGHT END OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE EXCEPT 6.6L 6.6L W/O ONSTAR W/ ONSTAR W/O S-BAND, TRAFFIC 2 3 4 5 GMLAN GREEN LED GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INFO FUSE 22 KEYPAD SIG LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE PNK WIRE PNK/BLK WIRE RADIO RDO FUSE 42 FUSE 39 RED LED WIRE RED/WHT WIRE SHIELD SUPPLY TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TELE SIG UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) USB CABLE BK USB CABLE USB RECEPTACLE (IF EQUIPPED) VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) (BEHIND CENTER OF DASH) VOICE SIG W/ ONSTAR YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 367 368 2099 L AUD+ R AUD+ DRAIN WIRE 1999 1946 659 LR AUD- RR AUD- LOW REF AMP FUSE 41 FUSE 38 ANTENNA AUD SIG BLK WIRE BLUETOOTH WIRELESS COMMUNI- CATION INTERFACE ANTENNA BLUNT CUT) BRN WIRE BRN/WHT WIRE CELLULAR TELEPHONE MICROPHONE (IN OVERHEAD CONSOLE) CELLULAR/ NAVIGATION ANTENNA CELLULAR/ NAVIGATION, DIGITAL RADIO ANTENNA CELLULAR/NAVIGATION, DIGITAL RADIO ANTENNA (LEFT FRONT OF ROOF) COAX COAX BK COAX COAX COMPUTER DATA LINES SYSTEM CUT) DIGITAL AUDIO SYSTEM DIGITAL RADIO RECEIVER (IF EQUIPPED) (BEHIND RIGHT END OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE DRAIN WIRE 6 7 8 9 10 11 12 13 14 REM SIG LED CNTRL EXCEPT 6.6L 6.6L W/O ONSTAR W/ ONSTAR W/O S-BAND, TRAFFIC 2 3 4 5 GMLAN GND LF AUD- RF AUD- DRAIN WIRE GREEN LED GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INFO FUSE 22 KEYPAD SIG LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOW REF LT BLU/BLK WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ORG/ WIRE ORG/BLK WIRE PNK WIRE PNK/BLK WIRE RADIO RDO FUSE 42 FUSE 39 RED LED WIRE RED/WHT WIRE SHIELD SUPPLY TAN WIRE TAN/BLK WIRE TAN/WHT WIRE UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) USB CABLE BK USB CABLE USB RECEPTACLE (IF EQUIPPED) VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) (BEHIND CENTER OF DASH) VOICE SIG W/ ONSTAR W/ S-BAND, TRAFFIC DIGITAL AUDIO SYSTEM WHT WIRE YEL WIRE YEL/BLK WIRE

5060 2011 2099 1546 1947 1946 1999 COMPUTER DATA LINES SYSTEM AMP CTRL GND AMP FUSE 41 FUSE 38 ANTENNA BLK WIRE BRN WIRE BRN/WHT WIRE COAX BK DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EMERGENCY SWITCH EXCEPT 6.6L 6.6L GMLAN DRAIN WIRE DRAIN WIRE RF AUD- LF AUD- RR AUD- LR AUD- GREEN LIGHT HOT AT ALL TIMES INSIDE REARVIEW MIRROR (ISRVM) LED GND SIG LED SIG LOGIC LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LIGHT LOW REF LT BLU/BLK WIRE LT GRN/BLK WIRE LT GRN/WHT WIRE NCA WIRE ONSTAR BUTTON ASSEMBLY ONSTAR SWITCH ORG/ WIRE ORG/BLK WIRE RADIO RDO FUSE 42 FUSE 39 RED WIRE RED/WHT WIRE RF AUD+ LF AUD+ RR AUD+ LR AUD+ REM SIG TAN WIRE TELEPHONE SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) USB CABLE USB RECEPTACLE (IF EQUIPPED) VOICE SIG WHT WIRE YEL/BLK WIRE

ANTENNA 201 200 BK COAX BK USB CABLE BLK WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DND EMERGENCY SWITCH EXCEPT 6.6L 6.6L GMLAN GREEN LIGHT LIGHT GRY WIRE HOT AT ALL TIMES INSIDE REARVIEW MIRROR (ISRVM) LED LED GND SIG SIG LF SPK- RF SPK- LOGIC LOW REF LR AUD- RR AUD- LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE ONSTAR BUTTON ASSEMBLY ONSTAR SWITCH RADIO RDO FUSE 42 FUSE 39 RED WIRE RED/WHT WIRE TAN WIRE TELEPHONE SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) USB CABLE USB RECEPTACLE (IF EQUIPPED) VOICE SIG YEL WIRE YEL/BLK WIRE

ANTENNA 201 200 BK COAX BLK WIRE BRN WIRE BRN/WHT WIRE COMPUTER DATA LINES SYSTEM DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE EMERGENCY SWITCH EXCEPT 6.6L 6.6L GMLAN GREEN LIGHT GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE INFO FUSE 22 INSIDE REARVIEW MIRROR (ISRVM) LED GND SIG LED SIG LOGIC LF SPK- RF SPK- LIGHT LOW REF LR AUD- LR AUD- LR AUD- RR AUD- LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE OF DASH) ONSTAR BUTTON ASSEMBLY ONSTAR SWITCH POWER DISTRIBUTION SYSTEM RADIO RDO FUSE 42 FUSE 39 RED WIRE RED/WHT WIRE REM SIG B+ TAN WIRE TELEPHONE SWITCH UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) USB CABLE USB RECEPTACLE (IF EQUIPPED) VOICE SIG W/ ONSTAR WHT WIRE YEL WIRE YEL/BLK WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 L AUD+ R AUD+ 1 2 3 4 B+ LF SPK+ RF SPK+ VOICE SIG/ ANTENNA AUD SIG BK COAX BLK WIRE BLUNT CUT) BRN WIRE BRN/WHT WIRE CELLULAR TELEPHONE MICROPHONE (IN OVERHEAD CONSOLE) CELLULAR/ NAVIGATION ANTENNA CELLULAR/ NAVIGATION, DIGITAL RADIO ANTENNA CELLULAR/NAVIGATION, DIGITAL RADIO ANTENNA (LEFT FRONT OF ROOF) COAX COAX COAX COMPUTER DATA LINES SYSTEM DIGITAL RADIO RECEIVER (BEHIND RIGHT END OF DASH) DK BLU WIRE DK GRN WIRE DK GRN/WHT WIRE DRAIN WIRE GMLAN GREEN LED GRY WIRE HOT AT ALL TIMES I/P FUSE BLOCK (LEFT SIDE OF DASH, INFO FUSE 22 KEYPAD SIG L AUD - R AUD - DRAIN WIRE LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOW REF LOW REF/ DRAIN WIRE 6 7 8 9 10 11 12 13 14 REM SIG LED CNTRL GND LF SPK- RF SPK- LR AUD + RR AUD + VOICE SIG LR AUD - RR AUD - LOW REF LT BLU WIRE LT BLU/BLK WIRE LT GRN WIRE LT GRN/BLK WIRE NCA WIRE PNK WIRE PNK/BLK WIRE POWER DISTRIBUTION SYSTEM RADIO RDO FUSE 42 FUSE 39 RED LED WIRE RED/WHT WIRE SHIELD SUPPLY TAN WIRE TAN/BLK WIRE TAN/WHT WIRE TELE SIG UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) USB CABLE USB RECEPTACLE (IF EQUIPPED) VEHICLE COMMUNICATION INTERFACE MODULE (VCIM) (BEHIND CENTER OF DASH) VOICE SIG W/ ONSTAR WHT WIRE YEL WIRE YEL/BLK WIRE

2 1 FM ANT FM ANT 3 2 1 IGN 6 5 4 3 2 1 IGN VOLT GND L AUDIO (+) R AUDIO (+) VIDEO SIG A (+) VIDEO COM (-) 6 5 4 3 2 1 IGN VOLT GND L AUDIO (+) R AUDIO (+) VIDEO SIG B (+) VIDEO COM (-) BLK WIRE CLOCK SIG L AUDIO (+) R AUDIO (+) VIDEO SIG A (+) VIDEO COM (-) CLOCK SIG L AUDIO (+) R AUDIO (+) VIDEO SIG B (+) VIDEO COM(-) DIGITAL VIDEO DISC (DVD) CONTROL MODULE DRIVER SEAT HEADREST DIGITAL VIDEO DISC (DVD) DISPLAY EXCEPT 6.6L 6.6L FM ANTENNA GROUND DISTRIBUTION SYSTEM HOT W/ RUN/CRNK RELAY ENERGIZED PASSENGER SEAT HEADREST DIGITAL VIDEO DISC (DVD) DISPLAY PNK WIRE RED WIRE SEO/ALC FUSE 54 FUSE 51 UNDERHOOD FUSE BLOCK (LEFT SIDE OF ENGINE COMPT) WHT WIRE YEL WIRE