2019 Chevrolet Silverado 1500 - North America
Item Wire Color Polarity Wire Location
12 Volts Red/Violet (30A) + BCM under driver dash, blue 27 pin plug, pin 4
Second 12 Volts Red/Blue (2A) + Ignition Switch, black 6 pin plug, pin 4
Ground (chassis ground)
Starter Kill Yellow + Underhood Fuse Box, gray 44 pin plug (X3), pin B1
Second Starter White/Violet (R Code) (see Tech Doc 1605) + 9600 Ohms Ignition Switch, black 6 pin plug, pin 2
Ignition Violet/Black + Ignition Switch, black 6 pin plug, pin 5
Accessory Violet/Yellow + Ignition Switch, black 6 pin plug, pin 3
Second Accessory (same as second starter) + 6300 Ohms
Keysense (same as second starter)
CAN Bus High Blue Data BCM under driver dash, white 26 pin plug, pin 25
CAN Bus Low White Data BCM under driver dash, white 26 pin plug, pin 24
CAN Bus High 2 Blue/Black (DIAG CAN) Data OBD-Data Link Connector, black 16 pin plug, pin 6
CAN Bus Low 2 White (DIAG CAN) Data OBD-Data Link Connector, black 16 pin plug, pin 14
CAN Bus SW Green Data BCM under driver dash, blue 27 pin plug, pin 22
CAN Bus SW 2 Green/White Data OBD-Data Link Connector, black 16 pin plug, pin 1
OBD 12 Volts Red/White (10A) + OBD-Data Link Connector, black 16 pin plug, pin 16
OBD Ground Black - OBD-Data Link Connector, black 16 pin plug, pin 4
IMMO Data Green/Violet Data Immobilizer Control Module on ignition switch, black 3 pin plug, pin 2
IMMO Data 2 Green/Violet (alternate location) Data BCM under driver dash, green 25 pin plug, pin 2
Security Light Gray + BCM under driver dash, white 26 pin plug, pin 21
Power Lock Brown/Yellow - BCM under driver dash, gray 26 pin plug, pin 11
Power Unlock Brown/White - BCM under driver dash, pink 27 pin plug, pin 27
Power Lock2 Yellow/Violet - BCM under driver dash, gray 26 pin plug, pin 21
Power Unlock2 Brown/Violet - BCM under driver dash, gray 26 pin plug, pin 24
Lock Motor Brown/Yellow Reverse BCM under driver dash, pink 27 pin plug, pin 4
Driver Unlock Motor Gray Reverse BCM under driver dash, pink 27 pin plug, pin 1
Factory Alarm Arm (arms on lock with door open)
Factory Alarm Disarm (transponder and ignition)
Parking Lights Violet/Gray (L); Gray/Brown (R) + Underhood Fuse Box, green or black 44 pin plug (X2), pin H3 (L); pin H5 (R)
Parking Lights - Green/Gray - BCM under driver dash, white 26 pin plug, pin 22
Hazards Green/White - BCM under driver dash, blue 27 pin plug, pin 26
Turn Signal (Left) Blue/White (LF); Yellow/Blue (LR) + BCM under driver dash, brown 26 pin plug, pin 2 (LF); pin 1 (LR)
Turn Signal (Right) Green/Violet (RF); Brown/Green (RR) + BCM under driver dash, black 26 pin plug, pin 3 (RF); pin 4 (RR)
Headlight White/Violet - BCM under driver dash, white 26 pin plug, pin 16
AutoLights Green/Brown - (Off) BCM under driver dash, white 26 pin plug, pin 11
Reverse Light Green/White + Passenger Kick, black 76 pin plug, pin 40
Reverse Light 2 Green/White (alternate location) + Radio behind glove box, green 29 pin plug, pin 11 (base); gray 29 pin plug, pin 13 (premium)
Left Front Door Trigger Gray or Pink (power window) - Driver Door Latch, green 10 pin plug, pin 1
Left Front Door Trigger 2 Gray (manual window) - BCM under driver dash, gray 26 pin plug, pin 25
Right Front Door Trigger Gray (power window) - Passenger Door Latch, green 10 pin plug, pin 5
Right Front Door Trigger 2 Gray (manual window) - BCM under driver dash, gray 26 pin plug, pin 14
Left Rear Door Trigger Gray or Green - Left Rear Window Switch, black 10 pin plug, pin 2
Right Rear Door Trigger Green - Right Rear Window Switch, black 10 pin plug, pin 2
Dome Light Gray + BCM under driver dash, white 26 pin plug, pin 23
Hood Pin Brown/Green - BCM under driver dash, black 26 pin plug, pin 24
Power Liftgate Gray (power tailgate) - 1000 Ohms Power Tailgate Switch, black 8 pin plug, pin 8
Power Liftgate 2 Gray (alternate location) - 1000 Ohms Passenger Kick, black 76 pin plug, pin 35
Trunk/Hatch Release Brown (w/o power tailgate) - BCM under driver dash, pink 27 pin plug, pin 5
Trunk Release Motor White/Green (w/o power tailgate) + BCM under driver dash, brown 26 pin plug, pin 11
Tachometer Yellow/Violet (V8) AC Camshaft Position Sensor, engine front center on timing chain cover, black 3 pin plug, pin 3
Tachometer 2 Violet/Blue (base radio) AC Passenger Kick, black 76 pin plug, pin 46 --or-- Radio behind glove box, green 29 pin plug, pin 23
Fuel Pump Violet/Green + Chassis to Body Junction Connector, engine compartment driver side, black 55 pin plug, pin 23
Rear Defroster Brown/Violet + Latched Passenger Kick, black 76 pin plug, pin 58
Mirror Defroster (same as rear defroster)
Left Front Heated Seat (LIN)
Right Front Heated Seat (LIN)
Heated Steering Wheel (inside steering wheel)
Speed Sense Green/Gray AC Passenger Kick, black 76 pin plug, pin 12
Brake Wire Violet/White + BCM under driver dash, black 26 pin plug, pin 11
Brake Activation Blue/Yellow MUX BCM under driver dash, blue 27 pin plug, pin 7
Parking Brake (electric parking brake)
Horn Trigger Green/White - BCM under driver dash, green 25 pin plug, pin 18
Horn Trigger 2 Brown/White (alternate location) - BCM under driver dash, brown 26 pin plug, pin 19
Wipers Gray + BCM under driver dash, black 26 pin plug, pin 16
All Windows Up-Down Gray/White (OPT1); Blue/Yellow (OPT2) (express down switch, if equipped) - BCM under driver dash, blue 27 pin plug, pin 15 (OPT1); black 26 pin plug, pin 19 (OPT2)
Memory Seat 1 White - 630 Ohms Driver Kick, door harness, black 52 pin plug, pin 12
Memory Seat 2 (same as memory seat 1) - 2000 Ohms